Details of apparatus for conversion

HELECTRICITY H02Electric power 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 SYSTEMS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER CONTROL OR REGULATION THEREOF

H02M1/00Details of apparatus for conversion

H02M1/0061using discharge tubes 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 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 H02M1/10Arrangements incorporating converting means for enabling loads to be operated at will from different kinds of power supplies H02M1/12Arrangements for reducing harmonics from ac input or output H02M1/126using passive filters H02M1/14Arrangements for reducing ripples from dc input or output H02M1/143using compensating arrangements H02M1/146using discharge tubes H02M1/15using active elements H02M1/16Means for providing current step on switching 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 H02M1/34Snubber circuits H02M1/36Means for starting or stoping converters H02M1/38Means for preventing simultaneous conduction of switches 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 H02M1/4225using a non-isolated boost converter H02M1/4233using a bridge converter consisting of active switches 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 galanically isolated DC output voltage H02M1/4266using passive elements H02M1/44Circuits or arangements for compensating for electromagnetic interferance in converters or inverters