Provided is a small-sized load drive system which, even with three three-phase inverters, significantly reduces noise regardless of control duty ratio. The load drive system includes three-phase inverters 301 to 303, and first, second, and third control units 401 to 403. The inverters 301 to 303 are connected to loads 211 to 213, respectively. The first control unit 401 generates sawtooth wave voltage and controls the inverter 301 according to the sawtooth wave voltage. The second control unit 402 generates inverse sawtooth wave voltage and controls the inverter 302 according to the inverse sawtooth wave voltage. The third control unit 403 generates triangular wave voltage which has ramps respectively equal to the sawtooth/inverse sawtooth wave voltage and either has a same phase or is out of phase by half a period relative to the sawtooth/inverse sawtooth wave voltage, and also controls the inverter 303 according to the triangular wave voltage.
LOAD DRIVE SYSTEM, ELECTRIC MOTOR DRIVE SYSTEM AND VEHICLE CONTROL SYSTEM
LASTANTRIEBSSYSTEM, ELEKTROMOTORANTRIEBSSYSTEM UND FAHRZEUGSTEUERUNGSSYSTEM
SYSTÈME DE COMMANDE DE CHARGE, SYSTÈME DE COMMANDE DE MOTEUR ÉLECTRIQUE ET SYSTÈME DE COMMANDE DE VÉHICULE
2019-01-02
Patent
Electronic Resource
English
IPC: | H02M APPARATUS 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 , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |