To appropriately estimate the temperature of a current sensor disposed in a power conversion apparatus.SOLUTION: In a case where a second temperature that is a temperature of coolant detected right after a present ready-on of a vehicle is higher than a first temperature that is a temperature of coolant detected right before the immediate-last ready-off, with a ready-off period is shorter than a given period of time determined on the basis of a temperature difference between a temperature of an engine detected right before the immediate-past ready-off and the first temperature, the temperature of a current sensor right after the present ready-on is estimated by linear-interpolating a first coordinate point that consists of the first temperature and a time that represents right before the immediate-past ready-off as components and a second coordinate point that consists of the second temperature and a time that represents right after the present ready-on as components on a coordinate plane having axes respectively of the temperature of the coolant and the time.SELECTED DRAWING: Figure 3
【課題】電力変換装置に設けられた電流センサの温度を適切に推定する。【解決手段】車両の前回のレディオフ直前に検出された冷却水の温度である第1温度よりも、今回のレディオン直後に検出された冷却水の温度である第2温度が高い場合であって、レディオフ期間が、前回のレディオフ直前に検出されたエンジンの温度と上記第1温度との温度差に応じて決定される所定時間より短い場合、冷却水の温度及び時間を夫々軸とする座標平面上において、第1温度及び前回のレディオフ直前を示す時間を成分とする第1座標点と、第2温度及び今回のレディオン直後を示す時間を成分とする第2座標点とを線形補間して、今回のレディオン直後の電流センサの温度を推定する。【選択図】図3
POWER CONVERSION APPARATUS
電力変換装置
2020-06-04
Patent
Electronic Resource
Japanese
IPC: | B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES / 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 |