POWER CONVERSION DEVICE

A power conversion device switches between PHM control mode and sine wave PWM control mode according to a predetermined condition. The PHM control mode alternately forms, according to an electrical angle, a first period during which upper arm switching elements and lower arm switching elements are e...

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Bibliographische Detailangaben
Hauptverfasser:	MIYAZAKI, HIDEKI, NISHIGUCHI, SHINGO, OOYAMA, KAZUTO, FURUKAWA, KIMIHISA, MITSUI, TOSHISADA, KAMIYA, AKINORI
Format:	Patent
Sprache:	eng ; fre ; jpn
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS INVEHICLES ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OFTRANSMISSIONS IN VEHICLES ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GASEXHAUST OR FUEL SUPPLY OF PROPULSION UNITS, IN VEHICLES AUXILIARY DRIVES FOR VEHICLES CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TOTRANSPORTATION CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE ORDIFFERENT FUNCTION CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES ELECTRICITY ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATION INSTRUMENTATION OR DASHBOARDS FOR VEHICLES MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES PERFORMING OPERATIONS ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TOTHE CONTROL OF A PARTICULAR SUB-UNIT TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE TRANSPORTING VEHICLES IN GENERAL
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Beschreibung
Zusammenfassung:	A power conversion device switches between PHM control mode and sine wave PWM control mode according to a predetermined condition. The PHM control mode alternately forms, according to an electrical angle, a first period during which upper arm switching elements and lower arm switching elements are each turned on at different phases and current is supplied from a DC power supply to a motor and a second period during which either the upper arm switching elements or the lower arm switching elements are turned on at the all phases to maintain the torque by the energy stored in the motor. The sine wave PWM control mode turns on the switching elements according to the pulse width determined on the basis of the comparison result between a sine wave command signal and a carrier wave and supplies current from the DC power supply to the motor. L'invention concerne un dispositif de conversion d'énergie qui commute entre un mode de commande de type PHM (Pulse Height Modulation pour Modulation d'Impulsion en Hauteur) et un mode de commande PWM (Pulse Width Modulation pour Modulation d'Impulsion en Largeur) à onde sinusoïdale en fonction d'une condition prédéterminée. Le mode de commande PHM forme en alternance, en fonction d'un angle électrique, une première période pendant laquelle des éléments de commutation de bras supérieur et des éléments de commutation de bras inférieur sont chacun fermés selon des phases différentes et un courant est délivré à un moteur par une alimentation électrique à courant continu, et une seconde période pendant laquelle l'un ou l'autre des éléments de commutation de bras supérieur et des éléments de commutation de bras inférieur sont fermés pour toutes les phases afin de conserver le couple grâce à l'énergie stockée dans le moteur. Le mode de commande PWM à onde sinusoïdale ferme les éléments de commutation en fonction de la largeur d'impulsion déterminée sur la base du résultat de la comparaison entre un signal de commande à onde sinusoïdale et une onde porteuse et délivre au moteur le courant fourni par la source d'alimentation électrique à courant continu.