High-power bidirectional multi-way direct-current simulation power supply

A technology of simulating power supply and simulating DC power supply, it is applied in the direction of converting DC power input to DC power output, irreversible AC power input converting to DC power output, output power conversion device, etc. Single function, small capacity and difficult to expand, etc., to achieve the effect of improving power factor and reducing current harmonics

Inactive Publication Date: 2015-08-26
江苏同芯电气科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a DC analog power supply used in the field of converter equipment testing, which is used to solve the current problems of high testing cost of DC equipment, small capacity, difficult expansion, single voltage level and function, etc., so as to meet more testing requirements

Method used

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  • High-power bidirectional multi-way direct-current simulation power supply
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  • High-power bidirectional multi-way direct-current simulation power supply

Examples

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Effect test

Embodiment 1

[0028] like figure 1 As shown, a high-power bidirectional two-way analog power supply is composed of two analog DC power supply units 3 with the same structure, and the isolation is realized through the double winding on the secondary side of the input transformer. Each analog DC power supply unit 3 includes an AC / DC converter 1 and a DC / DC converter 2 connected in series. The input terminals of each AC / DC converter 1 are respectively connected to a secondary winding of the input transformer. The AC / DC converter 1 is composed of a three-phase PWM controllable rectification module. Its topology is as follows: image 3 shown. The input terminals of each DC / DC converter 2 are connected in parallel with a capacitor, the anodes of the output terminals are respectively connected in series with a diode, and the two ends of each diode are connected in parallel with a bypass switch. The DC / DC converter 2 is composed of interleaved parallel Buck type bidirectional DC / DC converters. T...

Embodiment 2

[0032] A high-power two-way multi-channel (three or more) analog power supply is composed of multiple analog DC power supply units with the same structure, and is isolated by multiple windings on the secondary side of the input transformer. The structure and output mode of each analog DC power supply unit are the same as those in Embodiment 1.

[0033] The DC analog power supply of the present invention can work roughly in two working states: the inverter test state and the DC power supply equipment test state. When the power supply is tested as an inverter device, it needs to be used in conjunction with an AC analog power supply. The connection mode of the two output terminals can be determined by the voltage and current level of the tested inverter equipment; when working in the performance test of the DC power supply equipment, the connection mode and control strategy of the DC output terminal can be selected according to the power and performance requirements of the tested...

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Abstract

The invention discloses a high-power bidirectional multi-way direct-current simulation power supply. The high-power bidirectional multi-way direct-current simulation power supply is characterized by consisting of at least two mutually insulated simulation direct-current power supply units, wherein each simulation direct-current power supply unit comprises an AC / DC converter and a DC / DC converter which are connected in series; an input end of each AC / DC converter is connected with a secondary side winding of an input transformer; an input end of each DC / DC converter is connected with a capacitor in parallel, and a positive electrode of an output end of each DC / DC converter is connected with a diode in series; two ends of each diode are respectively connected with a switch in parallel. The high-power bidirectional multi-way direct-current simulation power supply is universal in function, only needs to adopt different control strategies, can widen the functions without replacing hardware, and solves the problems of high testing cost of existing DC equipment, small capacity, difficulty in expansion, single voltage level and functions and the like.

Description

technical field [0001] The invention belongs to the technical field of converter equipment testing, and in particular relates to an analog direct current power supply for testing various performance indicators of various DC / DC, DC / AC and other high-power converter equipment. Background technique [0002] The 21st century is the century of environmental protection and energy saving. During this period, various new energy technologies (such as photovoltaic power generation, electric vehicles, dual-source trolleybuses) and high-power energy storage devices (such as supercapacitor packs, NaS battery packs) have been obtained. Tons of applications. In these application fields, both the DC / DC unit and the DC / AC unit are one of the core components, and its performance is related to the technical indicators such as the function, utilization rate, and reliability of each system. Therefore, a comprehensive test platform is needed, which can detect various performance indicators of va...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M7/12H02M3/155
Inventor 周细文章辉刘韬谈浩楠马华峰
Owner 江苏同芯电气科技有限公司
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