PWM CONVERTER CONTROL DEVICE FOR CONTROLLING MULTIPLE PWM CONVERTERS

To implement stable control and to improve workability in selecting a semiconductor switching element by uniformizing partial current charge between multiple PWM converters.SOLUTION: When controlling two PWM converters, a PWM converter control device 1 branches a d-axis current command ithat is gene...

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Bibliographische Detailangaben
1. Verfasser:	KAMIMOTO SADAO
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 THEREOF 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 implement stable control and to improve workability in selecting a semiconductor switching element by uniformizing partial current charge between multiple PWM converters.SOLUTION: When controlling two PWM converters, a PWM converter control device 1 branches a d-axis current command ithat is generated by a terminal voltage constant controller 10 and a q-axis current command ithat is generated by a bus voltage controller 15 into a first system and a second system. In the first system, a d-axis voltage command vand a q-axis voltage command vare generated and outputted to PWM controllers 21-1a to 21-1c, a gate of a semiconductor switching element of each phase in the PWM converter is turned on/turned off by the PWM converter control device 1. In the second system, a d-axis voltage command vand a q-axis voltage command vare generated and outputted to PWM controllers 21-2a to 21-2c and a gate of a semiconductor switching element of each phase in the PWM converter is turned on/turned off by the PWM converter control device 1.SELECTED DRAWING: Figure 1 【課題】複数のＰＷＭコンバータの間で電流分担を均一にすることで、安定した制御を実現すると共に、半導体スイッチング素子を選定する際の作業性を向上する。【解決手段】ＰＷＭコンバータ制御装置１は、２台のＰＷＭコンバータを制御する際に、端子電圧一定制御器１０にて生成したｄ軸電流指令ｉd及びバス電圧制御器１５にて生成したｑ軸電流指令ｉqを、第１系統及び第２系統に分岐させる。ＰＷＭコンバータ制御装置１は、第１系統において、ｄ軸電圧指令ｖd1及びｑ軸電圧指令ｖq1を生成し、ＰＷＭ制御器２１−１ａ〜２１−１ｃに出力し、ＰＷＭコンバータの各相の半導体スイッチング素子のゲートをオンオフし、ＰＷＭコンバータ制御装置１は、第２系統において、ｄ軸電圧指令ｖd2及びｑ軸電圧指令ｖq2を生成し、ＰＷＭ制御器２１−２ａ〜２１−２ｃに出力し、ＰＷＭコンバータの各相の半導体スイッチング素子のゲートをオンオフする。【選択図】図１