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Motor drive device and laundry processing equipment equipped with the motor drive device

A technology for motor drive and processing equipment, which is applied to control electromechanical transmission devices, washing devices, control generators, etc., can solve problems such as high noise, and achieve the effect of reducing noise

Inactive Publication Date: 2018-08-24
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, it may happen that high noise is generated in a specific frequency band when the motor is driven

Method used

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  • Motor drive device and laundry processing equipment equipped with the motor drive device
  • Motor drive device and laundry processing equipment equipped with the motor drive device
  • Motor drive device and laundry processing equipment equipped with the motor drive device

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Embodiment Construction

[0024] Hereinafter, the present invention will be described in more detail with reference to the drawings.

[0025] The suffixes "module" and "part" of the structural members used in the following description are simply given in consideration of writing this specification, and do not give important meanings or functions by themselves. Therefore, the above-mentioned "module" and "part" can be used in combination with each other.

[0026] figure 1 It is an example of a circuit diagram of a motor drive device according to an embodiment of the present invention.

[0027] The motor driving device 200 of an embodiment of the present invention changes the carrier frequency, and changes the voltage command value by changing the carrier frequency, and drives the motor based on the changed carrier frequency and voltage command value, thereby reducing noise during motor driving.

[0028] In particular, by sequentially changing the carrier frequency within the range from the first frequ...

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PUM

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Abstract

The invention provides a motor drive device and laundry processing equipment equipped with the motor drive device. The motor drive device according to the embodiment of the present invention includes: an inverter that converts a DC power supply into an AC power supply through a switching operation, and outputs the converted AC power supply to the motor; an output current detection unit that detects an output current flowing in the motor; and The control unit controls the inverter based on the detected output current, the control unit changes the carrier frequency, and changes the voltage command value by changing the carrier frequency, and based on the changed carrier frequency and the voltage command value, to the inverter The inverter outputs the inverter switch control signal. Accordingly, noise during motor driving can be reduced.

Description

technical field [0001] The present invention relates to a motor driving device and a laundry treatment machine (Motordriving device and laundry treatment machine including the same) provided with the motor driving device. Installation of laundry treatment equipment. Background technique [0002] A motor drive device is a device that drives a motor by converting received power. [0003] In addition, home appliances and the like are provided with motors that are driven by converting DC power to AC power. [0004] In addition, it may happen that high noise is generated in a specific frequency band when the motor is driven. [0005] In particular, in laundry processing equipment, refrigerators, vacuum cleaners, air conditioners, etc., high noise may be generated in a specific frequency band when the motor is driven. Contents of the invention [0006] An object of the present invention is to provide a motor drive device capable of reducing noise during motor drive, and a lau...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P21/14H02P27/08H02P25/026
CPCD06F37/304D06F34/10D06F2103/46H02P25/02H02P27/08H02P27/085Y02B40/00H02P6/14H02P27/06H02P6/28H02P21/18
Inventor 李俊昊李清一诸廷文
Owner LG ELECTRONICS INC