Sine-wave current driving system of single-winding brushless direct current motor and control method thereof
A brushless DC motor and sine wave current technology, applied in the direction of torque ripple control, electronic commutator, etc., can solve the problems of difficult motor control, high manufacturing cost, and limited use range
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[0057] The sinusoidal current drive system and control method of the single-winding brushless DC motor of the present invention will be further described in detail below with reference to the accompanying drawings.
[0058] Such as figure 1 As shown, the sine wave current drive system of the single-winding brushless DC motor of the present invention includes a power supply circuit, a full-bridge power inverter circuit, a single-winding brushless DC motor, a position sensor, a current sampling circuit, a voltage sampling circuit, and a control operation unit , position detection circuit and external command acceptance circuit.
[0059] The power supply circuit outputs DC power, which is connected to the full-bridge power inverter circuit through the DC+ / DC- DC bus.
[0060] The full-bridge power inverter circuit includes 4 groups of high-power switching devices composed of IGBTs or MOSFETs, the full-bridge power inverter circuit is electrically connected to the control operati...
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