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Test method for resonance parameters of DC unit of intelligent power router

A technology of resonance parameters and testing methods, which is applied in the field of resonance parameter testing of DC units of intelligent power routers, can solve problems such as low precision, low testing efficiency, and complicated testing steps, and achieve the effect of improving testing accuracy and testing efficiency

Active Publication Date: 2017-10-20
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the shortcomings of the existing intelligent power router DC unit resonance parameter test method based on the extraction of voltage and current characteristics, such as complicated test steps, low test efficiency and low precision, and propose an intelligent power router. Test Method for Resonant Parameters of DC Unit

Method used

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  • Test method for resonance parameters of DC unit of intelligent power router
  • Test method for resonance parameters of DC unit of intelligent power router
  • Test method for resonance parameters of DC unit of intelligent power router

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0035] The test circuit of the resonance parameter of the DC unit of the intelligent power router of the present invention is as follows: figure 1 As shown, the energy storage capacitor C of the H-bridge on the high-voltage side of the DC unit of the smart power router 0 with DC power supply U dc Connected in parallel to provide energy for the entire DC unit of the Smart Power Router; the load is connected to the energy storage capacitor C of the low-voltage side H-bridge circuit of the DC unit of the Smart Power Router 1 Connected to make the load obtain a stable DC voltage; with a resonant capacitor C preThe H-bridge on the high-voltage side of the DC unit of the smart power router and the resonant capacitor C sec The H-bridge on the low-voltage side of the DC unit of the smart power router is connected through a high-frequency transformer...

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Abstract

A method for testing resonance parameters of a DC unit of an intelligent power router, comprising the following steps: collecting in real time the voltage and current values ​​input to the low-voltage side of the DC unit of the smart power router; calculating the active power input to the low-voltage side of the DC unit of the smart power router; judging the smart power router The adjustment effect of the switching frequency of the DC unit; determine the adjustment direction of the switching frequency of the DC unit of the intelligent power router; determine the adjustment range of the switching frequency of the DC unit of the intelligent power router.

Description

technical field [0001] The invention relates to a method for testing a DC unit of an intelligent power router, in particular to a method for testing resonance parameters of a DC unit of an intelligent power router. Background technique [0002] With the development of smart grids, the use of smart power routers containing high-frequency isolation transformers as an advanced power electronics technology can not only achieve electrical isolation and voltage matching of systems with different DC voltage levels, but also achieve flexible and flexible power flow. Intelligent management. As the core component of the smart power router, the DC unit has key parameters, such as resonant frequency, and the accuracy of the test directly affects the performance of the smart power router during normal operation. At present, the test of the resonant frequency of the DC unit of the smart power router is mainly by extracting the characteristic quantities of the voltage and current, such as...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R23/02
Inventor 李耀华杨立敏李子欣高范强徐飞
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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