To suppress influences upon a component caused by a regenerative current which is generated in a high rotation state of a motor, without increasing a control period of motor control.SOLUTION: A motor control apparatus comprises: an angular velocity calculation section 50 for calculating a rotation angular velocity of a multi-phase motor which is driven by a multi-phase inverter; a determination section 51 which determines whether the rotation angular velocity is equal to or higher than a threshold; and a duty control section 52 for controlling a duty ratio which is a ratio of an ON time of an upper arm switching element or a lower arm switching element with respect to a PWM period. In a case where the rotation angular velocity is equal to or higher than the threshold, the duty control section 52 fixes duty ratios of all phases of the multi-phase inverter to a same predetermined value.SELECTED DRAWING: Figure 7
【課題】モータ制御の制御周期を高めることなく、モータの高回転状態で発生する回生電流による部品への影響を抑制する。【解決手段】モータ制御装置は、多相インバータにより駆動される多相モータの回転角速度を演算する角速度演算部50と、回転角速度が閾値以上であるか否かを判定する判定部51と、PWM周期に対する上アームスイッチング素子又は下アームスイッチング素子のオン時間の比であるデューティ比を制御するデューティ制御部52と、を備える。デューティ制御部52は、回転角速度が閾値以上である場合に、多相インバータの全相のデューティ比を同一の所定値に固定する。【選択図】図7
MOTOR CONTROL APPARATUS, ELECTRIC ACTUATOR PRODUCT AND ELECTRIC POWER STEERING DEVICE
モータ制御装置、電動アクチュエータ製品及び電動パワーステアリング装置
2022-02-07
Patent
Electronic Resource
Japanese
IPC: | H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern / B62D MOTOR VEHICLES , Motorfahrzeuge / 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 |
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