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Frequency-converter ageing tester

A technology of aging test and frequency converter, which is applied in the direction of measuring devices, instruments, measuring electricity, etc., can solve the problems of affecting the safe operation of electrical equipment, increasing the harmonic current of the power grid, and consuming large power energy, so as to achieve simple, convenient and economical aging Energy and Pollution Reduction Effects

Inactive Publication Date: 2006-05-31
上海神源电气有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0004] In the inverter aging test, a large amount of electric energy is consumed; the conventional aging is to release the aging energy into the surrounding environment in the form of heat energy, causing serious thermal pollution to the environment; since the inverter is rectified by a diode, the power is relatively large , the current harmonics of the power grid will increase, which will affect the safe operation of nearby electrical equipment

Method used

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  • Frequency-converter ageing tester
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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0013] Depend on figure 1 It can be seen that: a frequency converter 1 to be aged and a power supply 2 are used to supply power to the frequency converter 1 to be aged; it also includes: the frequency converter 1 to be aged passes through the first inductor H1, the second inductor H2, and the fifth inductor H5 is connected to the isolation transformer 3 respectively; the A phase of the isolation transformer 3 is connected to the first input end of the sine wave pulse width modulation (SPWM) rectifier control unit 4 through the third inductor H3, and the B phase is connected through the fourth inductor H4 It is connected with the second input end of the sine wave pulse width modulation rectifier control unit 4, and the C phase is connected with the third input end of the sine wave pulse width modulation rectifier control unit 4 through the sixth ...

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Abstract

An aging test device of frequency converter utilizing energy lost at operation time of power supply input supplementary aging system and isolation transformer to carry out filtering and isolating for output of frequency converter to be aged to convert it to be three phase sine wave voltage for being inputted to SPWM rectifier control unit, utilizing said control unit to rectify three phase AC of three phase inverse bridge to be DC on P¿CN bus for feeding it back to P-N DC bus of frequency converter to be aged in order to be reutilized by frequency converter to be aged.

Description

technical field [0001] The invention relates to a device for testing the performance of a frequency converter, in particular to a device for testing the aging performance of a frequency converter. Background technique [0002] Before the inverter leaves the factory, the inverter manufacturer needs to test the various performances of the inverter. [0003] The aging test is to simulate the electrical characteristics of the actual load and run at full load to test the performance of the inverter, so as to achieve the purpose of aging the inverter and improving product quality. [0004] In the inverter aging test, a large amount of electric energy is consumed; the conventional aging is to release the aging energy into the surrounding environment in the form of heat energy, causing serious thermal pollution to the environment; since the inverter is rectified by a diode, the power is relatively large , the current harmonics of the power grid will increase, which will affect the ...

Claims

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Application Information

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IPC IPC(8): G01R31/00
Inventor 王会华纪正达钱匡胡新宇
Owner 上海神源电气有限公司