PROBLEM TO BE SOLVED: To provide a motor controller capable of performing more suitable motor control.SOLUTION: An ECU4 comprises: an inverter circuit 40 supplying a three-phase AC power to a motor 20; a phase open relay group 50 shutting down a power supply path to the motor 20 at an abnormal state; and a microcomputer 5 controlling an operation of the inverter circuit 40 and the phase open relay group 50. FETs 50u and 51u for the phase open relay as phase opening means are mediated in a middle of an U-phase power line 46u. The FETs 50u and 51u for the phase open relay are provided so that each parasitic diode D is oppositely oriented. Similarly, FETs 50v and 51v for the phase open relay are provided in the middle of a V-phase power line 46v so that each parasitic diode D is oppositely oriented. Similarly, FETs 50w and 51w for the phase open relay are provided in a middle of a power line 46w of a W-phase so that a parasitic diode D becomes an opposite orientation.SELECTED DRAWING: Figure 2
【課題】より適切なモータ制御を実行できるモータ制御装置を提供する。【解決手段】ECU4は、モータ20に3相交流電力を供給するインバータ回路40と、異常時にモータ20への給電経路を遮断する相開放リレー群50と、インバータ回路40および相開放リレー群50の動作を制御するマイコン5とを備えている。U相の動力線46uの途中には、相開放手段としての相開放リレー用FET50u,51uが介在されている。相開放リレー用FET50u,51uは、互いの寄生ダイオードDの向きが反対となるように設けられている。同様に、V相の動力線46vの途中には、相開放リレー用FET50v,51vが、互いの寄生ダイオードDの向きが反対になるように設けられている。また、同様に、W相の動力線46wの途中には、相開放リレー用FET50w,51wが、互いの寄生ダイオードDの向きが反対になるように設けられている。【選択図】図2
MOTOR CONTROLLER AND ELECTRICALLY-DRIVEN POWER STEERING DEVICE
モータ制御装置および電動パワーステアリング装置
2016-12-08
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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