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Multifunctional electric energy converter

A power converter and multi-functional technology, applied in the direction of output power conversion device, irreversible DC power input into AC power output, electrical components, etc., can solve the problems of large volume, heavy weight and high cost of the inverter , achieve the effect of volume and weight reduction, simple structure and cost reduction

Inactive Publication Date: 2003-10-29
吴加林
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  • Summary
  • Abstract
  • Description
  • Claims
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Problems solved by technology

(See "Several Optimum Schemes for Frequency Conversion and Speed ​​Regulation of Medium-Voltage Motors" published by "Electric Drive" magazine, Issue 1, 2002, published by "Tianjin Electric Drive Design Institute") The disadvantage of this approach is that the inverter volume Bulky, heavy, expensive, and can only be used as an inverter

Method used

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  • Multifunctional electric energy converter
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Embodiment Construction

[0011] Such as figure 1 As shown, the specific composition of the multifunctional power converter includes a rectifier circuit, a filter circuit connected to the rectifier circuit, an inverter circuit connected to the filter circuit, and connected in series on the output lines U, V, and W of the inverter circuit respectively. The differential mode voltage suppression reactor LS 1 、LS 2 、LS 3 And the filter capacitor group, the filter capacitor group is connected in series with the capacitors C on the U, V, W output lines respectively 3 、C 4 、C 5 form, capacitance C 3 、C 4 、C 5 The other end of the parallel connection constitutes a midpoint N, in the differential mode voltage suppression reactor LS 1 、LS 2 、LS 3 and filter capacitor bank C 3 、C 4 、C 5 A closed magnetic ring LF is provided on the output lines U, V, W of the inverter circuit between them, and the closed magnetic ring is set in such a way that the output lines U, V, W are simultaneously wound on the c...

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Abstract

A multifunctional electric energy converter is composed of rectifier, filter, inverter, the differential mode voltage suppressing reactors serially connected to the outputs U, V and W of inverter, and filter capacitor group. Its features are that the output lines V, V and W of inverter are wound on a magnetic ring for isolating HF signals, decreasing output of common-mode voltage and improving output voltage waveform.

Description

technical field [0001] The invention relates to electrical transmission devices in the field of electrical transmission. Background technique [0002] Electric energy is widely used in various occasions. With the increasing development of science and technology, people have developed various electric energy transmission devices, such as transformers that change voltage, to achieve Inverters for AC-DC conversion, inverters for changing output frequency, and various active reactive power compensators and energy feedback devices for protecting grid power from pollution. The common disadvantage of these power transmission devices is single function, and the performance cannot fully reach the ideal working state, such as the contradiction between the voltage transformation capacity of the transformer and its own consumable cost, high temperature insulation; the high voltage transmission of the inverter and its own The contradiction between low-voltage power switches and the comm...

Claims

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Application Information

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IPC IPC(8): H02M1/12H02M1/14H02M7/48
Inventor 吴加林
Owner 吴加林
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