To reduce, in each system, the difference in current path length from a power source to a motor terminal connection portion among phases.SOLUTION: A circuit board includes a stator having a first winding and a second winding, a rotor, and a shaft, and is provided on one side in the shaft direction of a motor having at least three phases so as to control the motor. The circuit board includes a power source terminal connection portion to which current is supplied from an external power source, a first motor circuit which generates, from the supplied current, current to be supplied to the first winding, a first motor terminal connection portion through which the current is supplied to the first winding, a second motor circuit which generates, from the current supplied to the power source terminal connection portion, current to be supplied to the second winding, a second motor terminal connection portion through which the current is supplied to the second winding, and a first region and a second region, wherein, on one end side of the boundary between the first region and the second region, the power source terminal connection portion is disposed in the first region or the second region, and, on the other end side of the boundary, the first motor terminal connection portion and the second motor terminal connection portion are disposed.SELECTED DRAWING: Figure 4
【課題】電源から各系統、各相のモータ端子接続部までの電流経路長の差を低減する。【解決手段】第1の巻線と第2の巻線を有するステータとロータとシャフトを備え、3以上の相を有するモータのシャフト方向一方側に設けられ、モータを制御する回路基板であって、外部電源から電流が供給される電源端子接続部と、それに供給された電流から第1の巻線に供給される電流を生成する第1のモータ回路と、それから第1の巻線に電流を供給する第1のモータ端子接続部と、電源端子接続部に供給された電流から第2の巻線に供給される電流を生成する第2のモータ回路と、それから第2の巻線に電流を供給する第2のモータ端子接続部と、第1領域と第2領域を有し、第1領域と第2領域との境界線の一方の端部の側では電源端子接続部が第1領域または第2領域に配置され、境界線の他方の端部の側に第1のモータ端子接続部と第2のモータ端子接続部が配置される、回路基板。【選択図】図4
CIRCUIT BOARD, MOTOR DRIVING DEVICE, AND ELECTRIC POWER STEERING APPARATUS
回路基板、モータ駆動装置および電動パワーステアリング装置
2019-04-25
Patent
Electronic Resource
Japanese
IPC: | H02K Dynamoelektrische Maschinen , DYNAMO-ELECTRIC MACHINES / 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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