Energy-recyclable frequency converter testing system, testing method and installation method

An installation method and frequency converter technology, applied in the field of frequency converter testing, can solve problems such as energy consumption

Inactive Publication Date: 2015-11-18
ZHEJIANG EACN ELECTRONICS SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Traditional test systems consume more energy than energy recoverable systems

Method used

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  • Energy-recyclable frequency converter testing system, testing method and installation method

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Embodiment

[0023] Embodiment: a kind of frequency converter test system that energy can be recovered, such as figure 1 As shown, the system includes: a front-end inverter 1 and a front-end motor 2, a torque sensor 3, a rear-end inverter 4 and a rear-end motor 5, the output end of the front-end motor 2 is connected to the front end of the torque sensor 3, and the rear end of the torque sensor 3 and The output end of the rear end motor 5 is connected. Specifically, in order to allow buffering when there is an installation error, the front end motor 2 is connected to the front end of the torque sensor 3 through the front soft connection 6, and the rear end of the torque sensor 3 is connected through the rear end. End soft connection 7 is connected together with back-end motor 5.

[0024] The bottom of front-end motor 2 and rear-end motor 5 is fixed on a base 8, and described base 8 is the base that a steel plate is made, and the weight of base 8 is greater than the summation of front-end mo...

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PUM

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Abstract

The invention discloses an energy-recyclable frequency converter testing system, an energy-recyclable frequency converter testing method and an energy-recyclable frequency converter installation method. The testing system comprises a front-end frequency converter, a front-end motor, a torque sensor, a rear-end frequency converter and a rear-end motor, wherein an output end of the front-end motor is connected with a front end of the torque sensor, a rear end of the torque sensor is connected with a rear-end motor, the bottom parts of the front-end motor and the rear-end motor are fixed on a base, the front-end frequency converter is powered by an external power grid which is connected with the input end, an output end of the front-end frequency converter is connected with the front-end motor, an output end of the rear-end frequency converter is connected with the rear-end motor, and P and N input ends of the rear-end frequency converter are connected with P and N input ends of the front-end frequency converter. The testing system reduces the frequency of the rear-end frequency converter slowly in the frequency converter testing process, the rotation speed of the front-end motor is greater than that of the rear-end motor, that is, the front-end motor works, and the rear-end motor generates power, thus part of energy is fed back and reused when the front-end frequency converter is in tests, thereby reducing energy supply of the external power grid.

Description

technical field [0001] The invention relates to the technical field of frequency converter testing, in particular to an energy recoverable frequency converter testing system, testing method and installation method. Background technique [0002] Existing testing systems and methods for frequency converters carry out tests of various functions directly with the motor load, that is, the frequency converter is powered by an external power grid, and the output three-phase is connected to the motor. By changing the parameters of the frequency converter, it is observed whether the functions such as motor rotation normal. Compared with energy recoverable systems, traditional test systems consume more energy. Contents of the invention [0003] The present invention aims at the deficiencies of the above-mentioned prior art, and provides an improved frequency converter test system, which is to connect the energy feedback system in the traditional system, so that the energy consumed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/00
Inventor 张学峰冯涛许衍庭
Owner ZHEJIANG EACN ELECTRONICS SCI & TECH
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