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Permanent magnet synchronous motor control method and device and air conditioning equipment

A technology of permanent magnet synchronous motor and control method, applied in the direction of single motor speed/torque control, lighting and heating equipment, heating and ventilation control system, etc., can solve the problems of large IPM loss and low motor efficiency

Active Publication Date: 2013-03-06
QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Therefore, in the prior art permanent magnet synchronous motor control method, the IPM loss of the motor is relatively large, resulting in low motor efficiency

Method used

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  • Permanent magnet synchronous motor control method and device and air conditioning equipment
  • Permanent magnet synchronous motor control method and device and air conditioning equipment
  • Permanent magnet synchronous motor control method and device and air conditioning equipment

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Embodiment Construction

[0068] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be described in further detail below with reference to the accompanying drawings and preferred embodiments. However, it should be noted that many of the details listed in the specification are only for readers to have a thorough understanding of one or more aspects of the present invention, and these aspects of the present invention can be implemented even without these specific details.

[0069] As used herein, terms such as "module" and "system" are intended to include computer-related entities such as, but not limited to, hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a module may be, but is not limited to being limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and / or a computer. For example, both an applicatio...

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PUM

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Abstract

The invention discloses a permanent magnet synchronous motor control method and device and air conditioning equipment. The method comprises the following steps of: determining a duty ratio of a bus voltage control signal and a pulse driving signal according a rotary speed appointed by a rotary speed instruction; outputting the determined bus voltage control signal to a bus voltage adjusting circuit; adjusting bus voltage of an IPM (Intelligent Power Module) by the bus voltage adjusting circuit according to the bus voltage control signal; outputting a pulse driving signal to the IPM according to the determined duty ratio; and controlling the operation of a motor by the IPM according to the pulse driving signal. The duty ratio of the bus voltage control signal and the pulse driving signal is determined, and PAM (Pulse Amplitude Modulation) control and PWM (Pulse Wavelength Modulation) control are carried out at the same time, so that when the rotary speed is higher, the IPM is controlled by outputting a PWM driving signal with the smaller duty ratio; and meanwhile, the bus voltage is improved through a PAM manner to enable the rotary speed to reach the requirements, so that the loss of the IPM is reduced and the motor efficiency is improved.

Description

technical field [0001] The invention relates to motor control technology, in particular to a method and device for controlling a permanent magnet synchronous motor and an air conditioner. Background technique [0002] With the implementation of national energy conservation and emission reduction policies, permanent magnet synchronous motors have been widely used in the air-conditioning industry, and DC frequency conversion has received more and more attention. Control technology has been vigorously promoted. [0003] Usually, PAM (Pulse Amplitude Modulation, pulse amplitude modulation) and PWM (Pulse-Width Modulation, pulse width modulation) are used to control IPM (Intelligent Power Module, intelligent power module), and the operation control of permanent magnet synchronous motor is performed through IPM. The power switching device and the drive circuit are integrated in the IPM. [0004] Most of the existing PAM and PWM cooperation technologies are based on the motor spe...

Claims

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Application Information

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IPC IPC(8): H02P6/08F24F11/02
Inventor 张俊喜李希志李丛来王天鸿
Owner QINGDAO HISENSE HITACHI AIR CONDITIONING SYST
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