Control device and control method for suppressing high-speed torque pulse of brushless direct current motor
A brushed DC motor and control method technology, applied in the field of control, can solve problems such as motor jitter and limit the application scope of the motor, and achieve the effects of preventing motor jitter, suppressing torque ripple, and expanding the application scope.
Inactive Publication Date: 2015-03-11
JIANGSU UNIV OF SCI & TECH
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Problems solved by technology
[0002] Brushless DC motor has the advantages of small size, good performance, simple structure, high reliability, and large output torque. The scope of application of this type of motor
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[0020] The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings.
[0021] Such as figure 1 As shown, the present invention is a control device for suppressing high-speed torque ripple of a brushless DC motor, including a voltage-type inverter, a brushless DC motor and a controller, wherein the voltage-type inverter includes a DC voltage source and a three-phase bridge The three-phase bridge inverter is formed by six power tubes MOS1-MOS6 connected in series and then in parallel. The DC voltage source is connected to the input end of the three-phase bridge inverter, and the three One end of the capacitor is respectively connected to the three output ends of the three-phase bridge inverter, and the other ends of the three capacitors are connected to one point, and the three output ends of the three-phase bridge inverter are used as the voltage-type inverter. Output terminals; the output terminals of the vol...
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The invention discloses a control device for suppressing the high-speed torque pulse of a brushless direct current motor. The control device comprises a voltage type inverter, the brushless direct current motor and a controller, wherein the output end of the voltage type inverter is correspondingly connected with a three-phase winding of the brushless direct current motor respectively; the input end of the controller is connected with a hall signal output end of the brushless direct current motor; the output end of the controller is connected with the control ends of six power tubes in the voltage type inverter respectively so as to control switch on and switch off of all the power tubes. The control device can be used for effectively suppressing the phase-change torque pulse and expanding the application range of the brushless direct current motor. The invention also discloses a control method based on the control device for the high-speed torque pulse of the brushless direct current motor.
Description
technical field [0001] The invention belongs to the field of control, and in particular relates to a control device and a control method for suppressing high-speed torque ripple of a brushless DC motor. Background technique [0002] Brushless DC motor has the advantages of small size, good performance, simple structure, high reliability, and large output torque. The scope of application of this type of motor. Taking brushless DC motor two-two conduction, three-phase six-state as an example, when a high-speed brushless DC motor is commutating, the rise rate of the conduction phase current is smaller than the decline rate of the turn-off phase current, which results in Commutation torque ripple, and then slowing down the rising rate of the open phase current so that the current change rate of the two tends to be consistent can play a very good suppression effect. Therefore, a control device for suppressing the high-speed torque ripple of the brushless DC motor is used to sup...
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IPC IPC(8): H02P6/10
CPCH02P6/10
Inventor 魏海峰张懿
Owner JIANGSU UNIV OF SCI & TECH