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Harmonic processing circuit, compressor control circuit and air conditioning unit

A processing circuit and harmonic control technology, applied in the field of harmonic processing, can solve the problem of inability to take into account the saving of harmonic processing circuit components, and achieve the effects of meeting the requirements of EMC test standards, good control, and cost reduction.

Inactive Publication Date: 2019-10-18
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome at least to a certain extent the problem that the existing harmonic processing circuit EMC test and component saving cannot be balanced

Method used

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  • Harmonic processing circuit, compressor control circuit and air conditioning unit
  • Harmonic processing circuit, compressor control circuit and air conditioning unit
  • Harmonic processing circuit, compressor control circuit and air conditioning unit

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Embodiment Construction

[0014] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be described in detail below. Apparently, the described embodiments are only some of the embodiments of this application, not all of them. Based on the embodiments in the present application, all other implementation manners obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present application.

[0015] Aiming at the problem that the application of three-phase PFC (Power Factor Correction, power factor correction) is difficult in the harmonic control technology, the present invention finds a better harmonic control scheme to solve the harmonic problem in the EMC test in the related technology, Specifically, in a specific compressor control circuit, an IPM (Intelligent PowerModule, intelligent power module module) controlled by the compressor is adopted to...

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Abstract

The embodiment of the invention provides a harmonic processing circuit, a compressor control circuit and an air conditioning unit, belongs to the technical field of harmonic processing, and can solvethe problem that EMC test and element saving cannot be considered at the same time. The circuit comprises a pre-stage rectification branch, a capacitor module and a post-stage intelligent power module, wherein the rectification branch, the capacitor module and the intelligent power module are sequentially connected in parallel, and the intelligent power module is used for performing active harmonic control on the rectification branch. The circuit provided by the invention can pass an EMC test on the premise of saving elements, and is mainly used for harmonic processing of a compressor controlcircuit.

Description

technical field [0001] The application belongs to the technical field of harmonic processing, and in particular relates to a harmonic processing circuit, a compressor control circuit and an air conditioner unit. Background technique [0002] During the EMC (Electro Magnetic Compatibility, Electromagnetic Compatibility) test process of the three-phase unit, harmonics are still used as an evaluation item. When the current is greater than 16A, the harmonic standard can be appropriately reduced, but when the current is less than The wave standard is more stringent, and there are two schemes generally adopted in the market for this problem, one is a passive scheme, and the other is an active PFC (Power Factor Correction, power factor correction) scheme. [0003] The passive solution is a general solution, see the circuit structure figure 1 , but because the inductance / reactor inductance is not easy to match, it cannot pass the harmonic standard test. [0004] Active PFC solutio...

Claims

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Application Information

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IPC IPC(8): H02M1/42H02M1/44
CPCH02M1/4233H02M1/44Y02B70/10
Inventor 杨帆贺小林张泽娥
Owner GREE ELECTRIC APPLIANCES INC