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Power device control driving circuit and electrical equipment

A technology of power devices and drive circuits, applied in the field of intelligent electrical equipment, can solve the problem of high interference frequency amplitude

Pending Publication Date: 2020-04-21
GREE ELECTRIC APPLIANCES INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Based on this, it is necessary to provide a power device control drive circuit and electrical equipment that can reduce the interference frequency amplitude of power devices for the problem of high interference frequency amplitude of traditional electrical power devices.

Method used

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  • Power device control driving circuit and electrical equipment
  • Power device control driving circuit and electrical equipment
  • Power device control driving circuit and electrical equipment

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Embodiment Construction

[0022] In order to make the purpose, technical solutions, and advantages of this application clearer, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the application, and not used to limit the application.

[0023] In one embodiment, a power device control driving circuit is provided, such as figure 1 As shown, the RC assembly 110 and the controller 120 are included. The number of RC components 110 is two or more, and the RC parameter ratio of each RC component 110 is different from each other, and each RC component 110 is connected to the control terminal of the power device 210 and the controller 120. The controller 120 sends a carrier signal corresponding to an RC component 110 to control the on and off of the power device 210.

[0024] Wherein, each RC component 110 is composed of a resistor and a capacitor, and t...

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Abstract

The invention relates to a power device control driving circuit and electrical equipment. The circuit comprises two or more RC assemblies and a controller; the RC parameter ratios of the RC assembliesare different from each other; the controller is used for controlling the on-off of a power device through sending a carrier signal by the corresponding RC assembly; each RC assembly is connected with the control end of the power device and the controller. Carrier signals are sent through the RC assemblies with different RC parameter ratios to control the on-off of the power device, so that the interference frequency of the power device can be decomposed into a plurality of interference frequencies; since the fixed interference frequency is decomposed into the plurality of frequencies, an interference signal amplitude under a certain frequency is effectively reduced, and the interference frequency amplitude of the power device is reduced.

Description

Technical field [0001] This application relates to the technical field of smart electrical equipment, and in particular to a power device control drive circuit and electrical equipment. Background technique [0002] At present, domestic household appliances sales need to compulsorily meet the national standard EMC (Electro Magnetic Compatibility, electromagnetic compatibility). Therefore, each manufacturer adds electromagnetic interference and anti-interference tests in the experiment. Conduction is an important item in EMC testing, and it will basically appear in the test. Unqualified, need to spend a lot of manpower and material resources to rectify and repeatedly test. Power devices such as IGBT (Insulated Gate Bipolar Transistor) and IPM (Intelligent Power Module) are the main sources of interference in switching devices in power electronic circuits. How to reduce the interference frequency amplitude of power devices is a Problems to be solved. Summary of the invention [00...

Claims

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Application Information

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IPC IPC(8): H02M1/08H02M1/44
CPCH02M1/08H02M1/44
Inventor 于洪涛方小斌杨帆刘文斌张泽娥
Owner GREE ELECTRIC APPLIANCES INC