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Integrated air conditioner frequency converter for air conditioner of electric passenger car

A technology for electric passenger cars and frequency converters, which is applied to AC motor control, electrical components, emergency protection circuit devices, etc., can solve the problems of PCB heating in the main circuit of the frequency converter, damage to the frequency converter, etc., to achieve simple wiring and prolong service life. , the effect of reliable work

Inactive Publication Date: 2010-07-21
SONGZ AUTOMOBILE AIR CONDITIONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Such frequent high-current shocks make the PCB in the main circuit part of the inverter seriously heated, resulting in damage to the inverter

Method used

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  • Integrated air conditioner frequency converter for air conditioner of electric passenger car
  • Integrated air conditioner frequency converter for air conditioner of electric passenger car
  • Integrated air conditioner frequency converter for air conditioner of electric passenger car

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Embodiment Construction

[0029] A specific embodiment of an integrated air conditioner frequency converter for an electric passenger car air conditioner according to the present invention is given below in conjunction with the accompanying drawings.

[0030] See attached figure 1 . The power input circuit of a traditional general-purpose inverter is mainly composed of a buffer resistor R and a relay RL connected in parallel with it, large electrolytic capacitors C1 and C2, voltage equalizing resistors R1 and R2, and a voltage spike absorbing capacitor C3.

[0031] Continue to see attached figure 1 . When the power is first turned on, the power supply charges the electrolytic capacitors C1 and C2 through the buffer resistor R. The instantaneous current value at this time is i=V / R, where R is tens of ohms, V is 700V, and i is only tens of amperes at this time. However, when the relay pulls in, the power supply suddenly loses power and then powers up suddenly, a high voltage of 700V will be directly ...

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Abstract

The invention provides an integrated air conditioner frequency converter for an air conditioner of an electric passenger car, which comprises a charging part and a hollow reactor, wherein the hollow reactor is coupled between a power supply and the charging part. The invention simultaneously provides an air conditioning unit of the electric passenger car containing the air conditioner frequency converter. The integrated air conditioner frequency converter has the advantages of simple circuit and reliable work.

Description

technical field [0001] The invention relates to an integrated air conditioner frequency converter for an electric passenger car air conditioner. Background technique [0002] In recent years, the air conditioners of trolleybuses and pure trams in my country generally use integrated electric air-conditioning systems. The compressor, pipeline, inverter, and air conditioner components of the air conditioning system are all installed on the top of the air conditioner to form a whole. The air conditioning system can realize the cooling and heating functions of the air conditioner only by connecting the high voltage power supply and the control panel. The compressor, condensing fan and evaporating fan in the air-conditioning system are operated by 3-phase AC power provided by three frequency converters, and the frequency converter is the key control device in the air-conditioning system of the electric car. The quality of the inverter directly affects the quality of the air condi...

Claims

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Application Information

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IPC IPC(8): H02P27/06H02H7/122
Inventor 王志杰李兵贺五星张逵
Owner SONGZ AUTOMOBILE AIR CONDITIONING
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