PROBLEM TO BE SOLVED: To provide a power conversion device, a booster drive device, a control device, and an electric vehicle which achieve both suppression of increase in surge voltage and enhancement of controllability of an inverter.SOLUTION: A control device includes: a switch opening/closing signal calculator 66 which calculates a switch opening/closing time based on a voltage value between direct current supply lines LINK(H) and LINK(L) and an operation command, and outputs the calculated time as a switch opening/closing signal; a surge occurrence prediction calculation section 682 that determines a switch in which a surge voltage occurs due to an operation of the switch and a direction of a current flowing in the switch; and a surge voltage suppression section 684 which receives information on a semiconductor switch in which the surge voltage occurs from the surge occurrence prediction calculation section 682, determines whether or not a plurality of surge voltages are superposed, and outputs a surge suppression signal to the switch opening/closing signal calculator 66 if it determines that surge voltages are superposed. The switch opening/closing signal calculator 66 corrects the switch opening/closing signal based on the surge suppression signal, and outputs the signal.SELECTED DRAWING: Figure 2
【課題】 サージ電圧の増大を抑制することとインバータの制御性向上との両方を実現する電力変換装置、昇圧器駆動装置、制御装置、および電動車両を提供する。【解決手段】 実施形態の制御装置は、直流電流供給ラインLINK(H)、LINK(L)間の電圧値と、運転指令と、に基づいてスイッチの開閉時間を演算しスイッチ開閉信号として出力するスイッチ開閉信号演算器66と、スイッチの動作とスイッチに流れる電流の向きによりサージ電圧が発生するスイッチを判断するサージ発生予測演算部682と、サージ発生予測演算部682からサージ電圧が発生する半導体スイッチの情報を受け取り、複数のサージ電圧が重畳するか否かを判断し、サージ電圧が重畳すると判断したときにサージ抑制信号をスイッチ開閉信号演算器66へ出力するサージ電圧抑制部684と、を備え、スイッチ開閉信号演算器66は、サージ抑制信号に基づいてスイッチ開閉信号を修正して出力する。【選択図】図2
POWER CONVERSION DEVICE, BOOSTER DRIVE DEVICE, CONTROL DEVICE, AND ELECTRIC VEHICLE
電力変換装置、昇圧器駆動装置、制御装置および電動車両
2016-03-22
Patent
Electronic Resource
Japanese
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 |
European Patent Office | 2016