H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMSCONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWERCONTROL OR REGULATION THEREOF transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02PThis subclass covers only circuits or apparatus for the conversion of electric power, or arrangements for control or regulation of such circuits or apparatus. The electrotechnical elements employed are dealt within the appropriate subclasses, e.g. inductors, transformers H01F, capacitors, electrolytic rectifiers H01G, mercury rectifying or other discharge tubes H01J, semiconductor devices H01L, H10 impedance networks or resonant circuit not primarily concerned with the transfer of electric power H03H.In this subclass, the following term is used with the meaning indicated: "conversion", in respect of an electric variable, e.g. voltage or current, means the change of one or more of the parameters of the variable, e.g. amplitude, frequency, phase, polarity.
The following IPC groups are not in the CPC scheme. The subject matter for these IPC groups is classified in the following CPC groups: H02M9/00 covered by H03K3/53H02M9/02 covered by H03K3/53H02M9/04 covered by H03K3/53H02M9/06 covered by H03K3/53In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme. H02M1/00 H02M1/00Details of apparatus for conversionGroup H02M1/00 is impacted by reclassification into group H02M1/0043.
Groups H02M1/00 and H02M1/0043 should be considered in order to perform a complete search. H02M1/0003Details of control, feedback or regulation circuits H02M1/0006Arrangements for supplying an adequate voltage to the control circuit of converters H02M1/0009Devices or circuits for detecting current in a converter H02M1/0012Control circuits using digital or numerical techniques in DC/DC converters H02M3/157, H02M3/33515; in DC-AC converters H02M7/53873 H02M1/0016Control circuits providing compensation of output voltage deviations using feedforward of disturbance parameters H02M1/0019the disturbance parameters being load current fluctuations H02M1/0022the disturbance parameters being input voltage fluctuations H02M1/0025Arrangements for modifying reference values, feedback values or error values in the control loop of a converter H02M1/0029Circuits or arrangements for limiting the slope of switching signals, e.g. slew rate H02M1/0032Control circuits allowing low power mode operation, e.g. in standby mode H02M1/0035using burst mode control H02M1/0038Circuits or arrangements for suppressing, e.g. by masking incorrect turn-on or turn-off signals, e.g. due to current spikes in current mode control H02M1/0041Control circuits in which a clock signal is selectively enabled or disabled H02M1/0043Converters switched with a phase shift, i.e. interleaved non-isolated DC/DC converters H02M3/1586Group H02M1/0043 is incomplete pending reclassification of documents from groups H02M1/00 and H02M7/493.
Groups H02M1/00, H02M7/493 and H02M1/0043 should be considered in order to perform a complete search. H02M1/0045Converters combining the concepts of switch-mode regulation and linear regulation, e.g. linear pre-regulator to switching converter, linear and switching converter in parallel, same converter or same transistor operating either in linear or switching mode H02M1/0048Circuits or arrangements for reducing losses using snubbers H02M1/34 H02M1/0051Diode reverse recovery losses H02M1/0054Transistor switching losses periodically suspending operation of switching converter in low power mode H02M1/0035 H02M1/0058by employing soft switching techniques, i.e. commutation of transistors when applied voltage is zero or when current flow is zero using an auxiliary actively switched resonant commutation circuit connected to an intermediate DC voltage or between two push-pull branches of an inverter bridge H02M7/4811; in resonant inverters H02M7/4815; in inverters operating from a resonant DC source H02M7/4826 H02M1/0061using discharge tubes H02M1/0064Magnetic structures combining different functions, e.g. storage, filtering or transformation H02M1/0067Converter structures employing plural converter units, other than for parallel operation of the units on a single load H02M1/007Plural converter units in cascade push-pull DC/DC converters with pre-regulator H02M3/3374; DC-AC converters following a DC-DC stage including a high frequency transformer H02M7/4807; DC-AC converters following a DC-DC conversion stage generating periodically varying voltages H02M7/4826 H02M1/0074Plural converter units whose inputs are connected in series H02M1/0077Plural converter units whose outputs are connected in series H02M1/008Plural converter units for generating at two or more independent and non-parallel outputs, e.g. systems with plural point of load switching regulators H02M1/0083Converters characterised by their input or output configurationGroup H02M1/0083 is impacted by reclassification into groups H02M1/0085 and H02M1/0095.
Groups H02M1/0083, H02M1/0085 and H02M1/0095 should be considered in order to perform a complete search. H02M1/0085Partially controlled bridgesGroup H02M1/0085 is incomplete pending reclassification of documents from groups H02M1/0083, H02M1/4225 and H02M1/4233.
All groups listed in this Warning should be considered in order to perform a complete search. H02M1/0087adapted for receiving as input a current source H02M1/009having two or more independently controlled outputs for DC-DC converter with intermediate AC H02M3/33561 H02M1/0093wherein the output is created by adding a regulated voltage to or subtracting it from an unregulated input H02M1/0095Hybrid converter topologies, e.g. NPC mixed with flying capacitor, thyristor converter mixed with MMC or charge pump mixed with buckGroup H02M1/0095 is incomplete pending reclassification of documents from group H02M1/0083.
Groups H02M1/0083 and H02M1/0095 should be considered in order to perform a complete search. H02M1/0096Means for increasing hold-up time, i.e. the duration of time that a converter's output will remain within regulated limits following a loss of input power H02M1/02Circuits specially adapted for the generation of grid-control or igniter-control voltages for discharge tubes incorporated in static converters H02M1/04for tubes with grid control H02M1/042wherein the phase of the control voltage is adjustable with reference to the AC voltage H02M1/045for multiphase systems H02M1/047for ignition at the zero-crossing of voltage or current H02M1/06Circuits specially adapted for rendering non-conductive gas discharge tubes or equivalent semiconductor devices, e.g. thyratrons, thyristors H02M1/065for discharge tubes H02M1/08Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters H02M1/081wherein the phase of the control voltage is adjustable with reference to the AC source H02M1/082with digital control H02M1/083for the ignition at the zero crossing of the voltage or the current H02M1/084using a control circuit common to several phases of a multi-phase system H02M1/0845digitally controlled (or with digital control) H02M1/088for the simultaneous control of series or parallel connected semiconductor devices H02M1/092the control signals being transmitted optically H02M1/096the power supply of the control circuit being connected in parallel to the main switching element H02M1/092 takes precedence H02M1/10Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies, e.g. from ac or dc H02M1/12Arrangements for reducing harmonics from ac input or output H02M1/123Suppression of common mode voltage or current H02M1/126using passive filters H02M1/14Arrangements for reducing ripples from dc input or output H02M1/143using compensating arrangements for reducing noise from the supply in transmission systems H04B15/005 H02M1/146using discharge tubes H02M1/15using active elements H02M1/16Means for providing current step on switching, e.g. with saturable reactor H02M1/20Contact mechanisms of dynamic converters H02M1/22incorporating collectors and brushes H02M1/24incorporating rolling or tumbling contacts H02M1/26incorporating cam-operated contacts H02M1/28incorporating electromagnetically-operated vibrating contacts H02M1/30incorporating liquid contacts H02M1/32Means for protecting converters other than automatic disconnection H02M1/322Means for rapidly discharging a capacitor of the converter for protecting electrical components or for preventing electrical shock H02M1/325with means for allowing continuous operation despite a fault, i.e. fault tolerant converters H02M1/327against abnormal temperatures H02M1/34Snubber circuits H02M1/342Active non-dissipative snubbers H02M1/344Active dissipative snubbers H02M1/346Passive non-dissipative snubbers H02M1/348Passive dissipative snubbers H02M1/36Means for starting or stopping converters H02M1/38Means for preventing simultaneous conduction of switches H02M1/385with means for correcting output voltage deviations introduced by the dead time H02M1/40Means for preventing magnetic saturation H02M1/42Circuits or arrangements for compensating for or adjusting power factor in converters or inverters H02M1/4208Arrangements for improving power factor of AC input H02M1/4216operating from a three-phase input voltage H02M1/4233 takes precedence H02M1/4225using a non-isolated boost converterGroup H02M1/4225 is impacted by reclassification into group H02M1/0085.
Groups H02M1/4225 and H02M1/0085 should be considered in order to perform a complete search. H02M1/4233using a bridge converter comprising active switchesGroup H02M1/4233 is impacted by reclassification into group H02M1/0085.
Groups H02M1/4233 and H02M1/0085 should be considered in order to perform a complete search. H02M1/4241using a resonant converter H02M1/425using a single converter stage both for correction of AC input power factor and generation of a high frequency AC output voltage H02M1/4258using a single converter stage both for correction of AC input power factor and generation of a regulated and galvanically isolated DC output voltage H02M1/4241 takes precedence H02M1/4266using passive elements H02M1/4275by adding an auxiliary output voltage in series to the input H02M1/4283by adding a controlled rectifier in parallel to a first rectifier feeding a smoothing capacitor H02M1/4291by using a Buck converter to switch the input current H02M1/44Circuits or arrangements for compensating for electromagnetic interference in converters or inverters H02M3/00Conversion of dc power input into dc power outputGroup H02M3/00 is impacted by reclassification into group H02M3/003.
Groups H02M3/00 and H02M3/003 should be considered in order to perform a complete search. H02M3/003Constructional details, e.g. physical layout, assembly, wiring or busbar connectionsGroup H02M3/003 is incomplete pending reclassification of documents from group H02M3/00.
Groups H02M3/00 and H02M3/003 should be considered in order to perform a complete search. H02M3/005using Cuk converters H02M3/01Resonant DC/DC convertersGroups H02M3/01 and H02M3/015 are incomplete pending reclassification of documents from groups H02M3/33569 and H02M3/337.
All groups listed in this Warning should be considered in order to perform a complete search. H02M3/015with means for adaptation of resonance frequency, e.g. by modification of capacitance or inductance of resonance circuit H02M3/02without intermediate conversion into ac H02M3/04by static converters H02M3/06using resistors or capacitors, e.g. potential divider H02M3/07using capacitors charged and discharged alternately by semiconductor devices with control electrode , e.g. charge pumps H02M3/071adapted to generate a negative voltage output from a positive voltage source H02M3/072adapted to generate an output voltage whose value is lower than the input voltage H02M3/073Charge pumps of the Schenkel-type H02M3/075including a plurality of stages and two sets of clock signals, one set for the odd and one set for the even numbered stages H02M3/076the clock signals being boosted to a value being higher than the input voltage value H02M3/077with parallel connected charge pump stages H02M3/078with means for reducing the back bias effect, i.e. the effect which causes the threshold voltage of transistors to increase as more stages are added to the converters H02M3/08using discharge tubes without control electrode or semiconductor devices without control electrode H02M3/10using discharge tubes with control electrode or semiconductor devices with control electrode H02M3/07 takes precedence H02M3/125using devices of a thyratron or thyristor type requiring extinguishing means H02M3/13using discharge tubes only H02M3/135using semiconductor devices only H02M3/137with automatic control of output voltage or current, e.g. switching regulators H02M3/139with digital control H02M3/142including plural semiconductor devices as final control devices for a single load H02M3/145using devices of a triode or transistor type requiring continuous application of a control signal H02M3/15using discharge tubes only H02M3/155using semiconductor devices only H02M3/1552Boost converters exploiting the leakage inductance of a transformer or of an alternator as boost inductor H02M3/1555for the generation of a regulated current to a load whose impedance is substantially inductive H02M3/1557Single ended primary inductor converters [SEPIC] H02M3/156with automatic control of output voltage or current, e.g. switching regulators H02M3/1563without using an external clock H02M3/158 takes precedence H02M3/1566with means for compensating against rapid load changes, e.g. with auxiliary current source, with dual mode control or with inductance variation H02M3/157with digital control H02M3/158including plural semiconductor devices as final control devices for a single load H02M3/1582Buck-boost converters H02M3/1584 takes precedence H02M3/1584with a plurality of power processing stages connected in parallel H02M3/1586switched with a phase shift, i.e. interleaved H02M3/1588comprising at least one synchronous rectifier element H02M3/1582, H02M3/1584 take precedence H02M3/16by dynamic converters H02M3/18using capacitors or batteries which are alternately charged and discharged, e.g. charged in parallel and discharged in series H02M3/20by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M3/22with intermediate conversion into ac H02M3/24by static converters H02M3/26using discharge tubes without control electrode or semiconductor devices without control electrode to produce the intermediate ac H02M3/28using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac H02M3/285Single converters with a plurality of output stages connected in parallel parallel operation of a plurality of converters in dc distribution networks H02J1/10 H02M3/305using devices of a thyratron or thyristor type requiring extinguishing means H02M3/31using discharge tubes only H02M3/315using semiconductor devices only H02M3/3155with automatic control of the output voltage or current H02M3/325using devices of a triode or a transistor type requiring continuous application of a control signal H02M3/33using discharge tubes only H02M3/335using semiconductor devices only H02M3/33507with automatic control of the output voltage or current, e.g. flyback converters H02M3/33561, H02M3/33569 take precedence H02M3/33515with digital control H02M3/33523with galvanic isolation between input and output of both the power stage and the feedback loop H02M3/3353having at least two simultaneously operating switches on the input side, e.g. "double forward" or "double (switched) flyback" converter H02M3/33538of the forward type H02M3/3353, H02M3/33569 take precedence H02M3/33546with automatic control of the output voltage or current H02M3/33561 takes precedence H02M3/33553with galvanic isolation between input and output of both the power stage and the feedback loop H02M3/33561having more than one ouput with independent control H02M3/33569having several active switching elements H02M3/3353 takes precedenceGroup H02M3/33569 is impacted by reclassification into groups H02M3/33571, H02M3/33573, H02M3/01 and H02M3/015.
All groups listed in this Warning should be considered in order to perform a complete search. H02M3/33571Half-bridge at primary side of an isolation transformerGroup H02M3/33571 is incomplete pending reclassification of documents from groups H02M3/33569 and H02M3/337.
Groups H02M3/33569, H02M3/337 and H02M3/33571 should be considered in order to perform a complete search. H02M3/33573Full-bridge at primary side of an isolation transformerGroup H02M3/33573 is incomplete pending reclassification of documents from groups H02M3/33569 and H02M3/337.
Groups H02M3/33569, H02M3/337 and H02M3/33573 should be considered in order to perform a complete search. H02M3/33576having at least one active switching element at the secondary side of an isolation transformer H02M3/33584Bidirectional converters H02M3/33592having a synchronous rectifier circuit or a synchronous freewheeling circuit at the secondary side of an isolation transformer H02M3/337in push-pull configuration H02M3/33576 takes precedence; with self-oscillating arrangements H02M3/3382, H02M3/3385Group H02M3/337 is impacted by reclassification into groups H02M3/33571, H02M3/33573, H02M3/01 and H02M3/015.
All groups listed in this Warning should be considered in order to perform a complete search. H02M3/3372of the parallel type H02M3/3374with preregulator, e.g. current injected push-pull H02M3/3376with automatic control of output voltage or current H02M3/3378in a push-pull configuration of the parallel type H02M3/3374 takes precedence H02M3/338in a self-oscillating arrangement H02M3/337 takes precedence H02M3/3381using a single commutation path H02M3/3382in a push-pull circuit arrangement H02M3/3384of the parallel type H02M3/3385with automatic control of output voltage or current H02M3/33561 takes precedence H02M3/3387in a push-pull configuration H02M3/3388of the parallel type H02M3/34by dynamic converters H02M3/36using mechanical parts to select progressively or to vary continuously the input potential H02M3/38using mechanical contact-making and -breaking parts to interrupt a single potential H02M3/40wherein the parts are rotating and collectors co-operate with brushes or rollers H02M3/42with electromagnetically-operated vibrating contacts, e.g. chopper H02M3/44by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M5/00Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases H02M5/005using discharge tubes H02M5/02without intermediate conversion into dc H02M5/04by static converters controlling transformers, reactors or choke coils, e.g. by tap changing H02P13/00 H02M5/06using impedances H02M5/08using capacitors only H02M5/10using transformers H02M5/12for conversion of voltage or current amplitude only H02M5/14for conversion between circuits of different phase number H02M5/16for conversion of frequency H02M5/18for conversion of waveform H02M5/20using discharge tubes without control electrode or semiconductor devices without control electrode H02M5/22using discharge tubes with control electrode or semiconductor devices with control electrode H02M5/225comprising two stages of AC-AC conversion, e.g. having a high frequency intermediate link H02M5/25using devices of a thyratron or thyristor type requiring extinguishing means H02M5/253using discharge tubes only H02M5/257using semiconductor devices only H02M5/2573with control circuit H02M5/2576with digital control H02M5/27for conversion of frequency H02M5/271from a three phase input voltage H02M5/272for variable speed constant frequency systems H02M5/273with digital control H02M5/275using devices of a triode or transistor type requiring continuous application of a control signal H02M5/29using discharge tubes only H02M5/293using semiconductor devices only H02M5/2932with automatic control of output voltage, current or power H02M5/2935using reverse phase control, i.e. turn-on of switches in series with load at zero crossing of input voltage, turn-off before next zero crossing H02M5/2937using whole cycle control, i.e. switching an integer number of whole or half cycles of the AC input voltage H02M5/297for conversion of frequency H02M5/32by dynamic converters H02M5/34using mechanical contact-making and -breaking parts H02M5/36wherein the parts are rotating and collectors co-operate with brushes or rollers H02M5/38by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M5/40with intermediate conversion into dc H02M5/42by static converters H02M5/44using discharge tubes or semiconductor devices to convert the intermediate dc into ac H02M5/443using devices of a thyratron or thyristor type requiring extinguishing means H02M5/447using discharge tubes only H02M5/45using semiconductor devices only H02M5/4505having a rectifier with controlled elements H02M5/451with automatic control of output voltage or frequency H02M5/452with automatic control of output waveform H02M5/453using devices of a triode or transistor type requiring continuous application of a control signal H02M5/456using discharge tubes only H02M5/458using semiconductor devices only H02M5/4585having a rectifier with controlled elements H02M5/46by dynamic converters H02M5/48by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M7/00Conversion of ac power input into dc power outputConversion of dc power input into ac power output H02M7/003Constructional details, e.g. physical layout, assembly, wiring or busbar connections H02M7/006using discharge tubes H02M7/02Conversion of ac power input into dc power output without possibility of reversal H02M7/04by static convertersGroup H02M7/04 is impacted by reclassification into group H02M7/05.
Groups H02M7/04 and H02M7/05 should be considered in order to perform a complete search. H02M7/043using transformers or inductors only H02M7/046using discharge tubes H02M7/05Capacitor coupled rectifiersGroup H02M7/05 is incomplete pending reclassification of documents from group H02M7/04.
Groups H02M7/04 and H02M7/05 should be considered in order to perform a complete search. H02M7/06using discharge tubes without control electrode or semiconductor devices without control electrode H02M7/062Avoiding or suppressing excessive transient voltages or currents H02M7/064with several outputs H02M7/066particular circuits having a special characteristic H02M7/068mounted on a transformer H02M7/08arranged for operation in parallel H02M7/10arranged for operation in series, e.g. for multiplication of voltage H02M7/103Containing passive elements (capacitively coupled) which are ordered in cascade on one source H02M7/106With physical arrangement details H02M7/12using discharge tubes with control electrode or semiconductor devices with control electrode H02M7/125Avoiding or suppressing excessive transient voltages or currents H02M7/145using devices of a thyratron or thyristor type requiring extinguishing means H02M7/15using discharge tubes only H02M7/151with automatic control H02M7/153 takes precedence H02M7/153arranged for operation in parallel H02M7/155using semiconductor devices only H02M7/1552in a biphase or polyphase arrangement voltage multipliers H02M7/19 H02M7/1555with control circuit H02M7/1557with automatic control of the output voltage or current H02M7/162in a bridge configuration H02M7/1623with control circuit H02M7/1626with automatic control of the output voltage or current H02M7/17arranged for operation in parallel H02M7/19arranged for operation in series, e.g. for voltage multiplication H02M7/21using devices of a triode or transistor type requiring continuous application of a control signal H02M7/213using discharge tubes only H02M7/217using semiconductor devices only H02M7/2173in a biphase or polyphase circuit arrangement H02M7/2176 takes precedence; voltage multipliers H02M7/25 H02M7/2176comprising a passive stage to generate a rectified sinusoidal voltage and a controlled switching element in series between such stage and the output H02M7/219in a bridge configuration H02M7/2195the switches being synchronously commutated at the same frequency of the AC input voltage H02M7/23arranged for operation in parallel H02M7/2176 takes precedence H02M7/25arranged for operation in series, e.g. for multiplication of voltage H02M7/26using open-spark devices, e.g. Marx rectifier H02M7/28using electrolytic rectifiers H02M7/30by dynamic converters H02M7/32using mechanical contact-making and -breaking parts H02M7/34wherein the parts are rotating and collectors co-operate with brushes or rollers H02M7/36with electromagnetically-operated vibrating contacts, e.g. chopper H02M7/38using one or more sparking electrodes rotating over counterelectrodes H02M7/40by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M7/42Conversion of dc power input into ac power output without possibility of reversal H02M7/44by static converters H02M7/445using discharge tubes H02M7/46using discharge tubes without control electrode or semiconductor devices without control electrode H02M7/48using discharge tubes with control electrode or semiconductor devices with control electrode H02M7/4803with means for reducing DC component from AC output voltage H02M7/4807having a high frequency intermediate AC stage H02M7/4811having auxiliary actively switched resonant commutation circuits connected to intermediate DC voltage or between two push-pull branches H02M7/4815Resonant converters H02M7/4811 and H02M7/4826 take precedence H02M7/4818with means for adaptation of resonance frequency, e.g. by modification of capacitance or inductance of resonance circuits H02M7/4826operating from a resonant DC source, i.e. the DC input voltage varies periodically, e.g. resonant DC-link inverters H02M7/483Converters with outputs that each can have more than two voltages levelsGroup H02M7/483 is impacted by reclassification into group H02M7/4833.
Groups H02M7/483 and H02M7/4833 should be considered in order to perform a complete search. H02M7/4833Capacitor voltage balancingGroup H02M7/4833 is incomplete pending reclassification of documents from group H02M7/483.
Groups H02M7/483 and H02M7/4833 should be considered in order to perform a complete search. H02M7/4835comprising two or more cells, each including a switchable capacitor, the capacitors having a nominal charge voltage which corresponds to a given fraction of the input voltage, and the capacitors being selectively connected in series to determine the instantaneous output voltageGroup H02M7/4835 is impacted by reclassification into group H02M7/4837.
Groups H02M7/4835 and H02M7/4837 should be considered in order to perform a complete search. H02M7/4837Flying capacitor convertersGroup H02M7/4837 is incomplete pending reclassification of documents from group H02M7/4835.
Groups H02M7/4835 and H02M7/4837 should be considered in order to perform a complete search. H02M7/487Neutral point clamped inverters H02M7/49Combination of the output voltage waveforms of a plurality of converters H02M7/493the static converters being arranged for operation in parallelGroup H02M7/493 is impacted by reclassification into group H02M1/0043.
Groups H02M7/493 and H02M1/0043 should be considered in order to perform a complete search. H02M7/497sinusoidal output voltages being obtained by combination of several voltages being out of phase H02M7/501sinusoidal output voltages being obtained by the combination of several pulse-voltages having different amplitude and width H02M7/505using devices of a thyratron or thyristor type requiring extinguishing means H02M7/4807, H02M7/483, H02M7/493 and H02M7/4826 take precedence H02M7/51using discharge tubes only H02M7/515using semiconductor devices only H02M7/5152with separate extinguishing means H02M7/5155wherein each commutation element has its own extinguishing means H02M7/5157wherein the extinguishing of every commutation element will be obtained by means of a commutation inductance, by starting another main commutation element in series with the first H02M7/516Self-oscillating arrangements H02M7/517with special starting equipment H02M7/519in a push-pull configuration H02M7/517 takes precedence H02M7/521in a bridge configuration H02M7/523with LC-resonance circuit in the main circuit H02M7/5233the commutation elements being in a push-pull arrangement H02M7/5236in a series push-pull arrangement H02M7/525with automatic control of output waveform or frequency H02M7/517 - H02M7/523 take precedence H02M7/527by pulse width modulation H02M7/529using digital control H02M7/53using devices of a triode or transistor type requiring continuous application of a control signal H02M7/4807, H02M7/493 and H02M7/4826 take precedence H02M7/533using discharge tubes only H02M7/537using semiconductor devices only, e.g. single switched pulse inverters H02M7/5375with special starting equipment H02M7/538in a push-pull configuration H02M7/5375 takes precedence ; with oscillating arrangements H02M7/53832, H02M7/53846 H02M7/53803with automatic control of output voltage or current H02M7/53806in a push-pull configuration of the parallel type H02M7/5381Parallel type H02M7/5383in a self-oscillating arrangement H02M7/538 takes precedence H02M7/53832in a push-pull arrangement H02M7/53835of the parallel type H02M7/53838using a single commutation path H02M7/53846Control circuitsGroup H02M7/53846 and subgroups is not complete, see provisionally also H02M7/5383 and subgroups H02M7/538463for thyristor type converters H02M7/538466for transistor type converters H02M7/53854using thyristor type converters H02M7/53862using transistor type converters H02M7/5387in a bridge configuration H02M7/53871with automatic control of output voltage or current H02M7/53873with digital control H02M7/53875with analogue control of three-phase output H02M7/53876based on synthesising a desired voltage vector via the selection of appropriate fundamental voltage vectors, and corresponding dwelling times H02M7/53878by time shifting switching signals of one diagonal pair of the bridge with respect to the other diagonal pair H02M7/5388with asymmetrical configuration of switchesGroup H02M7/5388 is not complete, see provisionally also H02M7/5387 and subgroups H02M7/539with automatic control of output wave form or frequency H02M7/5375 - H02M7/5387 take precedence H02M7/5395by pulse-width modulation H02M7/54by dynamic converters H02M7/56using mechanical parts to select progressively, or to vary continuously, the input potential H02M7/58using mechanical contact-making and -breaking parts to interrupt a single potential H02M7/60wherein the parts are rotating and collectors co-operate with brushes or rollers H02M7/62with electromagnetically-operated vibrating contacts, e.g. chopper H02M7/64by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M7/66with possibility of reversal H02M7/68by static converters H02M7/70using discharge tubes without control electrode or semiconductor devices without control electrode H02M7/72using discharge tubes with control electrode or semiconductor devices with control electrode H02M7/75using devices of a thyratron or thyristor type requiring extinguishing means H02M7/753using discharge tubes only H02M7/757using semiconductor devices only H02M7/7575for high voltage direct transmission link H02M7/758with automatic control of output waveform or frequency H02M7/77arranged for operation in parallel H02M7/79using devices of a triode or transistor type requiring continuous application of a control signal H02M7/793using discharge tubes only H02M7/797using semiconductor devices only H02M7/81arranged for operation in parallel H02M7/82using open-spark devices, e.g. Marx rectifier H02M7/84using electrolytic rectifiers H02M7/86by dynamic converters H02M7/88using mechanical parts to select progressively or to vary continuously the input potential H02M7/90using mechanical contact-making and -breaking parts to interrupt a single potential H02M7/92wherein the parts are rotating and collectors co-operate with brushes or rollers H02M7/94wherein the parts are operated by rotating cams or cam-like devices H02M7/95with electromagnetically-operated vibrating contacts, e.g. chopper H02M7/96with moving liquid contacts H02M7/98by combination of static with dynamic convertersby combination of dynamo-electric with other dynamic or static converters H02M11/00Power conversion systems not covered by the preceding groups