| 摘要 |
PURPOSE:To reduce currents flowing through switching elements, and to change the switching elements into an IC by dividing motor coils into a plurality of lines while mounting a plural lines of the switching elements changing over the conduction of the motor coils. CONSTITUTION:A rotor is driven by drive circuits for a motor divided into two lines. First line U, V, W phase motor coils UA, VA, WA and second line U, V, W phase motor coils UB, VB, WB are each star-connected. Switching elements Q1A-Q6A, Q1B-Q6B corresponding to the motor coils UA, VA, WA, UB, VB, WB are fitted, and the switching elements are ON-OFF controlled by control circuits 1A, 1B. |
