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Compressor drive system startup control method, device, device and refrigerator

A drive system, compressor technology, applied in the direction of suppressing motor vibration control, AC motor control, control system, etc., can solve problems such as large noise and vibration

Active Publication Date: 2020-01-07
GREE ELECTRIC APPLIANCES INC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide a compressor drive system start-up control method, device, Appliances and Refrigerators

Method used

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  • Compressor drive system startup control method, device, device and refrigerator
  • Compressor drive system startup control method, device, device and refrigerator
  • Compressor drive system startup control method, device, device and refrigerator

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Embodiment Construction

[0053]In order to make the purpose, technical solution and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present application, and are not intended to limit the present application.

[0054] The start-up control method of the compressor driving system provided by this application can be applied to such as figure 1 In the application environment shown, the compressor drive system without electrolytic capacitors on the bus is composed of single-phase uncontrolled rectification, film capacitors and three-phase inverters, C dc It is a film capacitor with a capacitance value of only tens of microfarads, replacing electrolytic capacitors as DC bus capacitors, which can not only realize compressor speed regulation and natural power factor correction functions, ...

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Abstract

A compressor drive system startup control method, device, apparatus, and a refrigerator are disclosed. The control method includes that a random carry frequency and an initial positioning current areobtained. According to the random carrier frequency and the initial positioning current, the positioning operation of the compressor driving system is controlled, the positioning current is controlledto increase, and the updated positioning current is detected. The bus voltage value is obtained when the positioning current updated within the preset positioning time length is detected to reach thepreset threshold value; According to the bus voltage value and the preset DC bus voltage waveform, the compressor drive system is controlled to switch to the open loop operation and the oil supply closed loop fixed frequency operation successively. The random carrier frequency reduces the amplitude of harmonic energy in the vicinity of the carrier frequency and integer multiples thereof, The starting control method enables the controller to output enough voltage when switching to the closed loop fixed frequency operation of the oil speed, and the driving system obtains the maximum starting torque of the motor, the starting speed is fast, the starting ability is strong, and the starting vibration noise is small.

Description

technical field [0001] The present application relates to the technical field of start-up control of a drive system, in particular to a start-up control method, device, device and refrigerator of a compressor drive system. Background technique [0002] In recent years, due to the superiority of electrolytic capacitor technology in terms of reliability and cost, the drive system of permanent magnet synchronous compressors without electrolytic capacitors on the bus has become a research hotspot of experts at home and abroad. [0003] The traditional compressor driving system for the busbar electrolytic capacitor inverter often considers how to drive the compressor to run in a steady state, but does not consider and solve the problem of how to reduce the noise and vibration when driving the compressor to start running. The compressor drive system of the traditional busbar electrolytic capacitor inverter has a lot of noise and vibration during the start-up operation stage. Con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02P23/28H02P23/04H02P27/08
CPCH02P23/04H02P23/28H02P27/085
Inventor 徐常升张东盛程海珍高明世
Owner GREE ELECTRIC APPLIANCES INC
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