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Power evaluation system of frequency converter in energy two-way transmission rectification mode and test method of power evaluation system

A two-way transmission and frequency converter technology, applied in the field of frequency converters, can solve the problems of high power consumption, complicated maintenance and maintenance, and expensive construction costs, and achieve the effects of high reliability, simple design and strong versatility

Inactive Publication Date: 2013-09-11
ZHUZHOU CSR TIMES ELECTRIC CO LTD
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Problems solved by technology

Investigating the root cause, a large part of the reason is due to the high power consumption of the inverter factory current power assessment test (some are even as large as the rated power of the inverter), if a resistive load is used as a high-power assessment load (some even full power assessment), the waste of heat and electric energy can be imagined; if the back-to-back motor is used to drag the feedback load assessment system, the construction cost is also quite expensive
[0004] The main problems of the current general back-to-back motor load factory power assessment system and method are: the test system is expensive to build, the repair and maintenance are complicated, high cost and poor versatility

Method used

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  • Power evaluation system of frequency converter in energy two-way transmission rectification mode and test method of power evaluation system
  • Power evaluation system of frequency converter in energy two-way transmission rectification mode and test method of power evaluation system
  • Power evaluation system of frequency converter in energy two-way transmission rectification mode and test method of power evaluation system

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Embodiment Construction

[0041] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0042] Energy two-way transmission and rectification inverter power assessment system includes AC power supply, voltage regulator 1, transformer 2, rectification power supply cabinet 3, DC power output wiring cabinet 4, AC power output wiring cabinet 5, rectification system 6, inverter system 7, AC power supply, voltage regulator 1, and transformer 2 are connected in sequence and divided into two routes: one route is connected to the DC power output wiring cabinet 4 through the rectifying power supply cabinet 3, and the DC power output wiring cabinet 4 is connected to the rectifying system 6 of the low-voltage high-current power assessment system The positive and negative ports of the intermediate DC voltage between the inverter system 7 and the low-voltage high-current power assessment system are composed of two sets of inductiv...

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Abstract

The invention discloses a power evaluation system of a frequency converter in an energy two-way transmission rectification mode and a test method of the power evaluation system. The power evaluation system comprises a low-voltage high-current power evaluation system and a light-load joint debugging power evaluation system. The factory power elevation system of the frequency converter and the test method disclosed by the invention are suitable for factory routine test power evaluation of the frequency converter a rectifying module of which adopts an energy two-way transmission PWM (Pulse Width Modulation) rectification mode. The elevation system and the test method thereof disclosed by the invention have the advantages of simple design, low cost, high reliability, high actual application stability, strong generality and capability of saving electric energy.

Description

technical field [0001] The invention relates to a frequency converter, in particular to a power assessment system and a test method for a frequency converter using energy bidirectional transmission and rectification. Background technique [0002] The frequency converter is a power control device that uses the on-off function of power semiconductor devices to transform the power frequency power supply into another frequency power supply. It is a device that converts power frequency power (50Hz or 60Hz) into AC power of various frequencies to realize the variable speed operation control of the motor. The output of the rectifier circuit is smoothed and filtered, and the inverter circuit inverts the direct current into alternating current. [0003] With the rapid development of my country's converter technology, the application of inverters in high-voltage power transmission, industrial variable transmission, electric traction and other fields has become more and more popular; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00
Inventor 余志涛彭淼淼高峰武松剑耶小方
Owner ZHUZHOU CSR TIMES ELECTRIC CO LTD
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