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A high-power high-voltage DC charging device

A high-voltage direct current charging device technology, which is applied in the direction of output power conversion devices, circuit devices, battery circuit devices, etc., can solve the problem that the DC charging device does not have an inverter function, cannot meet the requirements of lightweight equipment, energy saving, and small voltage range adjustment and other problems, to achieve the effect of small output harmonics, high input side voltage, and fast control speed

Active Publication Date: 2021-02-05
上海少秋电气科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional high-voltage DC power supply has the disadvantages of low input PF value, low efficiency, poor dynamic effect, small voltage range adjustment, and generally low power, which cannot meet the requirements of equipment lightweight and energy saving; on the other hand, the traditional DC charging device does not have inverter function, or requires complex hardware design

Method used

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  • A high-power high-voltage DC charging device
  • A high-power high-voltage DC charging device
  • A high-power high-voltage DC charging device

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Embodiment Construction

[0022] The technical solutions in the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0023] A high-power high-voltage DC charging device, such as figure 1 As shown, it includes a three-phase power input module, a three-phase filter module, a three-phase PWM rectifier module, a BUCK circuit module, a DC filter module, a control module and a sampling module; the three-phase PWM rectifier module and the BUCK circuit module both include power An electronic switch, the control end of the power electronic switch is connected to the output of the control module; the three-phase electric input module, the three-phase filter module, the three-phase PWM rectifier module, and the BUCK circuit module are connected to the DC filter module in sequence; the sampling module The input of the DC filter module, the BUCK circuit module and the three-phase filter module are respectively connected, and the output of the DC feedback...

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Abstract

The invention proposes a high-power and high-voltage DC charging device. The high-power and high-voltage DC charging device comprises a three-phase electrical input module, a three-phase filter module, a three-phase pulse width modulation (PWM) rectification module, a BUCK circuit module, a DC filter module, a control module and a sampling module, wherein the input of the sampling module is connected with the DC filter module, the BUCK circuit module and the three-phase filter module separately, the output of a DC feedback value and the output of an AC feedback value of the sampling module are separately connected with the input of the control module, and the control module adopts a control method of combining DC current forward feedback, a voltage ring PI control, a current ring PI control and a hysteresis control to achieve DC charging control and also comprises an inversion control method. The high-power and high-voltage DC charging device has the advantages of fast control speed, smooth adjustment on output voltage and current and small output harmonic, the high-power and high-voltage DC output is achieved, and the inversion function also can be achieved.

Description

technical field [0001] The invention relates to the field of charging devices, in particular to a high-power high-voltage DC charging device. Background technique [0002] Currently, high-voltage DC power supplies or high-voltage DC charging devices are widely used in scientific research, industrial fields, and data centers. With the development of science and technology, the requirements for the output voltage and power of the high-voltage DC power supply or the high-voltage DC charging device are getting higher and higher. The traditional high-voltage DC power supply has the disadvantages of low input PF value, low efficiency, poor dynamic effect, small voltage range adjustment, and generally low power, which cannot meet the requirements of equipment lightweight and energy saving; on the other hand, the traditional DC charging device does not have The inverter function, or requires complex hardware design. Contents of the invention [0003] The object of the present in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/10H02M7/219H02M7/797H02M3/156
CPCH02J7/022H02M7/217
Inventor 李永红
Owner 上海少秋电气科技有限公司
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