Motor control system, method and device for suppressing motor vibration, and air conditioner
A motor control and vibration suppression technology, applied in the direction of suppressing motor vibration control, etc., can solve the problems of high cost and limitation of shock absorption measures, and achieve the effect of low cost, improved product comfort, and suppressed vibration.
Active Publication Date: 2020-06-30
GD MIDEA HEATING & VENTILATING EQUIP CO LTD +1
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Problems solved by technology
However, the disadvantages of related technologies are that the cost of optimizing the motor structure is relatively high, and there are limitations in shock absorption measures.
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[0028] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.
[0029] The following describes the motor vibration suppression method and device of the motor control system, the motor control system, and the air conditioner of the embodiment of the present invention with reference to the accompanying drawings.
[0030] figure 1 It is a flowchart of a motor vibration suppression method of a motor control system according to an embodiment of the present invention. Such as figure 1 As shown, the motor vibration suppression method of the motor control system includes...
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The invention discloses a motor control system, a motor vibration suppression method thereof, a suppression device and an air conditioner. The method comprises the following steps: fifth harmonic voltage and seventh harmonic voltage of induced voltage of the motor are acquired and thus, the proportional coefficient of the fifth harmonic voltage and the proportional coefficient of the seventh harmonic voltage are acquired respectively; according to the proportional coefficient of the fifth harmonic voltage, the proportional coefficient of fifth harmonic current is calculated, and according to the proportional coefficient of the seventh harmonic voltage, the proportional coefficient of seventh harmonic current is calculated; according to the proportional coefficient of the fifth harmonic current and the proportional coefficient of the seventh harmonic current, harmonics are injected to the motor control system, and thus, the current of the motor in a stationary coordinate system of the motor control system meets to overlap the fifth harmonic current and the fifth harmonic current to fundamental wave current according to the proportional coefficient of the fifth harmonic current and the proportional coefficient of the seventh harmonic current; and the motor is controlled through the motor control system after the harmonics are injected, vibration of the motor is thus reduced through injecting the harmonics, and the cost is low.
Description
Technical field [0001] The present invention relates to the technical field of motors, in particular to a motor vibration suppression method of a motor control system, a motor vibration suppression device of a motor control system, a motor control system and an air conditioner. Background technique [0002] With the widespread use of inverter air conditioners, the improvement of comfort has become one of the development directions of inverter air conditioning control technology. The vibration and noise of the motor will affect the comfort of users. Among them, the sources of motor vibration and noise mainly include: load fluctuations , Distortion of variable frequency current, distortion of induced voltage, poor balance of motor assembly and low rigidity of motor installation. [0003] In related technologies, methods of suppressing motor vibration and noise are usually used to reduce system vibration and noise. For motor vibration and noise caused by induced voltage distortion, th...
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IPC IPC(8): H02P23/04
CPCH02P23/04
Inventor 刘莉华
Owner GD MIDEA HEATING & VENTILATING EQUIP CO LTD