Motor starting control method, device and equipment and storage medium

A technology of motor starting and motor speed, applied in motor control, starting device, torque ripple control, etc., can solve the problem of high harmonic content of motor current

Inactive Publication Date: 2021-05-14
GUANGDONG WELLING ELECTRIC MACHINE MFG +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The main purpose of the present invention is to provide a motor starting control method, device, equipment and storage medium, aiming to solve the technical problem of high current harmonic content in the low speed stage of motor starting in the prior art

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  • Motor starting control method, device and equipment and storage medium
  • Motor starting control method, device and equipment and storage medium
  • Motor starting control method, device and equipment and storage medium

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Embodiment Construction

[0043] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0044] refer to figure 1 , figure 1 It is a schematic diagram of the structure of the motor start control device in the hardware operating environment involved in the solution of the embodiment of the present invention.

[0045] Such as figure 1 As shown, the motor start control device may include: a processor 1001 , such as a central processing unit (Central Processing Unit, CPU), a communication bus 1002 , a user interface 1003 , a network interface 1004 , and a memory 1005 . Wherein, the communication bus 1002 is used to realize connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network inte...

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Abstract

The invention relates to the technical field of motors, and discloses a motor starting control method, device and equipment and a storage medium. The motor starting control method comprises the steps of: judging whether a motor enters a preset rotating speed interval or not according to a current rotating speed value of the motor when the motor is started; when the motor enters the preset rotating speed interval, determining the frequency amplification of the switching frequency according to the switching error time of the motor and the current rotating speed value of the motor; and updating the first switching frequency according to the frequency amplification to obtain an updated switching frequency, and controlling the motor to start according to the updated switching frequency. When the motor enters the preset rotating speed interval, the first switching frequency is updated according to the rotating speed value of the motor and the switching error time, and the motor is controlled to be started according to the updated switching frequency, so that the current harmonic content of the motor in the low-speed starting stage can be effectively reduced, the noise in the starting stage is reduced, and the operation burden of a micro-control unit of the controller is not increased.

Description

technical field [0001] The present invention relates to the technical field of motors, in particular to a method, device, equipment and storage medium for motor startup control. Background technique [0002] The current waveform distortion of the permanent magnet synchronous motor is serious in the low-speed stage of starting, which is due to the fixed turn-on and turn-off time of the switch tube. Moreover, in order to prevent the short circuit caused by the simultaneous conduction of the upper and lower tubes of the same bridge arm, a dead time should be added to the pulse width modulation (PWM) signal, which will cause distortion of the output voltage of the inverter and increase the frequency of permanent magnet synchronization. The harmonic content in the three-phase phase current of the motor is the dead zone effect. The dead zone effect has a greater impact on the low-speed stage of starting, which increases the torque ripple of the motor at the low-speed stage and re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/10H02P6/20
CPCH02P6/10H02P6/20H02P2207/05
Inventor 李荷洁程云峰柳鹏
Owner GUANGDONG WELLING ELECTRIC MACHINE MFG
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