In bipolar BLDC motor, the mechanical phase is always ______ electrical phase.

In bipolar BLDC motor, the mechanical phase is always ______ electrical phase.

Right Answer is:

Double

SOLUTION

In Bipolar BLDC the direction of the output current can be changed in this motor. The motor uses complete winding. Thus, each phase consists of two sets of coils either connected in series or in parallel. Another mechanical phase is produced by the driver while changing the current direction. Here, the mechanical phases are always double in number than its electrical phases. This motor gives 40% more holding torque than unipolar drivers. But the temperature is more. So, a proper heat dissipation system is important in bipolar drivers.

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