Abstract
The open-winding topology with common dc bus is applied to permanent magnet brushless motor for promoting power density and elevating torque output capacity, however zero-sequence current will be generated in the winding which would reduce the efficiency and system stability. Therefore, a kind of decoupled space vector pulse width modulation strategy is proposed in this paper which can eliminate the common mode voltage to suppress the zero-sequence current. In addition, the utilization of dc link voltage can be improved effectively. Finally, the experimental platform is built and the proposed control strategy is verified by the experimental results.
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