INVERTER CONTROL DEVICE AND ELECTRIC VEHICLE SYSTEM

To reduce a DC component and a current ripple of inverter output current occurring in a region in the vicinity of zero cross.SOLUTION: An inverter control device 200 has a PWM control unit 220 generating a PWM pulse for controlling an inverter 100, and a pulse edge control unit 250 performing a puls...

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Hauptverfasser:	KURODA KIYOSHI, HARA TAKAFUMI, YASUJIMA TOSHIYUKI, MATSUI YAMATO, ASHIDA AKIHIRO
Format:	Patent
Sprache:	eng ; 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 CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	To reduce a DC component and a current ripple of inverter output current occurring in a region in the vicinity of zero cross.SOLUTION: An inverter control device 200 has a PWM control unit 220 generating a PWM pulse for controlling an inverter 100, and a pulse edge control unit 250 performing a pulse edge control of correcting (shifting) a phase of a pulse edge of the PWM pulse generated by the PWM control unit 220. The PWM control unit 220 generates the PWM pulse by using a modulation rate based on a voltage command (Vd, Vq). The pulse edge control unit 250 corrects the PWM pulse so that a phase difference between a zero cross point at which a modulation wave varies across a value 0 and the pulse edge of the PWM pulse may fall within a predetermined range.SELECTED DRAWING: Figure 1 【課題】ゼロクロス近傍領域において発生するインバータ出力電流の直流成分や電流リプルを低減する。【解決手段】インバータ制御装置２００は、インバータ１００を制御するためのＰＷＭパルスを生成するＰＷＭ制御部２２０と、ＰＷＭ制御部２２０により生成されたＰＷＭパルスのパルスエッジの位相を補正（シフト）するパルスエッジ制御を行うパルスエッジ制御部２５０とを備える。ＰＷＭ制御部２２０は、電圧指令（Ｖｄ＊，Ｖｑ＊）に基づく変調率を用いて、ＰＷＭパルスを生成する。パルスエッジ制御部２５０は、変調波が０を跨いで変化するゼロクロス点とＰＷＭパルスのパルスエッジとの位相差が所定の範囲内になるように、ＰＷＭパルスを補正する。【選択図】図１