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Single-phase/three-phase combined inverter power supply device for independent power generation situation

A technology of power supply device and single-phase inverter, which is applied in the direction of output power conversion device, electrical components, AC power input to AC power output, etc., which can solve the problem of high cost and can not be ignored, and achieve anti-asymmetry The three-phase load capacity is strong, the withstand voltage requirement is low, and the effect of expanding capacity

Inactive Publication Date: 2017-07-21
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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Problems solved by technology

One isolation method is to supply power to three inverters through three isolated DC / DC converters after rectification, but the cost is high, especially when the system capacity is large, the three high-power DC / DC converters bring The cost issue cannot be ignored

Method used

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  • Single-phase/three-phase combined inverter power supply device for independent power generation situation
  • Single-phase/three-phase combined inverter power supply device for independent power generation situation

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Embodiment Construction

[0021] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0022] Such as figure 1 , the present invention includes a permanent magnet generator with three sets of isolated three-phase winding output, three rectification modules and three single-phase inverters, wherein the permanent magnet generator outputs three isolated alternating currents, and the rectification module obtains three The isolated direct current is used as the input of three single-phase inverters, and the three inverters can work independently, or can be connected in parallel to expand the single-phase inverter, and can be switched to a combined three-phase inverter.

[0023] The invention utilizes a permanent magnet generator driven by an engine to generate electricity. The permanent magnet generator has three sets of isolated windings built in. The number of generator slots is a multiple of 9. The three sets of three-phase windings are symmetrically dis...

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Abstract

The invention relates to a single-phase / three-phase combined inverter power supply device for an independent power generation situation, which belongs to the field of independent power generation and power supply. The device comprises a permanent magnet generator with output of three sets of isolated three-phase windings, three rectifier modules and three single-phase inverters, wherein the permanent magnet generator outputs three ways of isolated AC; and three ways of isolated DC are obtained through the rectifier modules as input of the three single-phase inverters. Due to the independent winding structure of the generator, DC bus isolation of the system inverter is realized, no primary isolated DC / DC converter needs to be added, the structure is simplified, and the size and the weight is little. Through reasonably arranging the generator winding distribution, the output voltage harmonic can be reduced.

Description

technical field [0001] The invention relates to a single-phase / three-phase combined inverter power supply device for independent power generation, and belongs to the field of independent power generation and power supply. Background technique [0002] In the existing independent power generation and power supply occasions, such as the design of mobile power stations, the generator and inverter system are often considered separately, and the modularity of the inverter system is low. Even considering the modular design of the inverter, there are other problems in realizing the multi-function inverter system of single-phase independent operation, single-phase parallel operation, and three-phase combined operation. One is composed of three single-phase inverters consisting of a generator, a rectifier module and a common DC bus. The three single-phase inverters can be connected in parallel for expansion, or combined into a three-phase inverter. For the DC bus to output 380V thre...

Claims

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Application Information

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IPC IPC(8): H02M5/458
CPCH02M5/458
Inventor 李根郭琪琦钱叶彤黄文新卜飞飞
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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