To provide an inverter device and a vehicle controlling device capable of preventing current from being biased to some phase switching elements and damaging the switching elements at the start of motor rotation such as when the vehicle starts, and improving the lack of torque by controlling the prevention.SOLUTION: An inverter 1 that converts a direct current into an alternating current according to a type of a motor 10 by opening and closing a semiconductor switching element 3 of each phase, and a controlling portion 9 are provided. The controlling portion 9 applies a current limit when a rotation speed of the motor 10 is lower than a threshold value, such as immediately after starting the motor 10. Further, the controlling section 9 releases the current limitation when predetermined items indicating an usage status of the switching element 3 satisfy setting conditions. For example, the measured temperature of the switching elements 3 or cooling water for cooling, and elapsed time, may be used as the predetermined items indicating the usage status.SELECTED DRAWING: Figure 2
【課題】車両発進等のモータ回転の開始時に、一部の相のスイッチング素子に電流が偏ってそのスイッチング素子が損傷することが防止でき、またその防止の制御によってトルクが不足することが改善できるインバータ装置および車両制御装置を提供する。【解決手段】直流電流をモータ10の形式に応じた交流電流に、各相の半導体スイッチング素子3の開閉によって変換するインバータ1と、制御部9とを備える。制御部9は、モータ10を始動させた直後など、モータ10の回転数が閾値よりも低い場合に、電流制限をかける。また、制御部9は、スイッチング素子3の使用状況を示す定められた事項が設定条件を満たす場合は、前記電流制限を緩和する。前記使用状況を示す定められた事項は、例えば、スイッチング素子3またはその冷却用の冷却水の測定温度であり、この他に経過時間を用いてもよい。【選択図】図2
INVERTER DEVICE, AND VEHICLE CONTROLLING DEVICE
インバータ装置および車両制御装置
2020-10-08
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 |
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