Brushless direct current motor driving system for capacitor-less direct-current converter
A brushless DC motor and drive system technology, which is applied in the field of the brushless DC motor drive system of the capacitorless DC converter, can solve the problems such as the inability to reduce the volume of the drive system, the oscillation of the motor phase current, and the large size of the Buck capacitor, so as to reduce the volume. Cost, effect of suppressing current ripple, suppressing torque ripple
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[0027] The present invention provides a non-capacitance converter brushless DC motor drive system, in order to make the purpose, technical scheme and effect of the present invention clearer and clearer, and the present invention is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific implementations described herein are only used to explain the present invention, but not to limit the present invention.
[0028] The technical solution of the invention is described in detail below in conjunction with the accompanying drawings:
[0029] A non-capacitor converter brushless DC motor drive system, in which the converter is evolved from the traditional Buck converter, the Buck bus capacitor is removed, and a switch tube is connected in parallel at both ends of the inductor to provide freewheeling current for the inductor at the moment of motor commutation circuit; such as figure 1 As shown, the specific struc...
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