Provided are a rotating electric machine driver apparatus and an electric power steering apparatus using the same. The rotating electric machine driver apparatus includes a controller section (40) that obtains a detected current value (Ic) and generates a high-side instruction signal (UH, VH, WH) and a low-side instruction signal (UL, VL, WL) to switch an upper arm element (21-23) and a lower arm element (24-26) based on the detected current value (Ic). An abnormality detector (55) determines a simul-OFF abnormality which is an abnormality of a pair made up of the high-side and low-side instruction signals (UH, UL) being simultaneously switched off based on a condition that switching off of the high-side instruction signal (UH) for the upper arm element (21) and the low-side instruction signal (UL) for the lower arm element (24) pair continues for at least a simul-OFF abnormality determination time. In such manner, the simul-OFF abnormality of the instruction signals is detected (UH, UL).
Rotating electric machine driver and electric power steering device
2015-06-03
Patent
Electronic Resource
English
IPC: | 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 / H02P CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS , Steuern oder Regeln von elektrischen Motoren, elektrischen Generatoren, dynamoelektrischen Umformern |
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