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Fast control power source system of MMC structure based on H-bridge sub module

A technology of power supply system and sub-module, which is applied in the direction of current collectors, electric vehicles, electrical components, etc., can solve the problems of increasing system size and cost, failure of fast control power supply system, impact of input power grid, etc., and achieves simple circuit and structure, improved Equipment utilization and the effect of reducing the cost of equipment use

Inactive Publication Date: 2018-06-15
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

Too many components increase the possibility of failure of the fast-control power supply system, and the cost increases accordingly
[0006] 3. Due to the large instantaneous pulse current, more energy storage DC capacitors are often required, so a special pre-charging circuit must be configured, which also increases the size and cost of the system
[0007] 4. In the process of discharging the load with a large current, if the DC voltage on the capacitor drops rapidly, it will cause a large current on the input side and cause a large impact on the input grid

Method used

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  • Fast control power source system of MMC structure based on H-bridge sub module
  • Fast control power source system of MMC structure based on H-bridge sub module
  • Fast control power source system of MMC structure based on H-bridge sub module

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Embodiment 1

[0024] see Figure 1-2 , the present invention provides a technical solution: a fast control power supply system based on the MMC structure of the H bridge sub-module, including a power supply 1, the input end of the power supply 1 is electrically connected to the power supply device, and the output end of the power supply device is connected to the coil load 5 Electrical connection; the input end of the power supply device includes several groups of circuit breakers 2, each group of circuit breakers 2 is connected to an H-bridge sub-module 3, and the DC side of each H-bridge sub-module 3 is connected to a charging capacitor 4, and the power supply 1 adopts The output of multiple power supply modules is connected in parallel, and the H-bridge sub-modules 3 are connected in cascade to form an MMC structure; the coil load 5 is a series load resistance R and load inductance L; the power supply device has two working states, that is, high current / high voltage charge and discharge...

Embodiment 2

[0028] see Figure 3-4 , the present invention provides another technical solution. Other technical features of the present invention are the same as in Embodiment 1, the difference being that the power supply device includes several groups of H-bridge sub-modules 3, and the DC sides of the H-bridge sub-modules 3 are connected with charging capacitors 4 , several groups of H-bridge sub-modules 3 are connected in series to form a bridge arm, and then several groups of bridge arms are connected in parallel and then connected to the output terminal. The power supply adopts multi-phase AC source, and the structural block diagram of the multi-phase AC power supply is shown in Figure 4 shown.

[0029] from image 3 It can be seen that, in order to match the input of the polyphase unit, the main purpose of adopting the polyphase structure is to match the number of parallel branches determined by the current value required by the load. The second embodiment has the same two workin...

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PUM

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Abstract

The invention discloses a fast control power source system of an MMC structure based on an H-bridge sub module. The fast control power source system comprises a power source, wherein an input end of the power source is electrically connected with a power source device, and an output end of the power source device is electrically connected with a coil load. The system is advantaged in that a pre-charging and power source device is simple, practicality is stronger, efficiency is higher, and maintenance is more convenient.

Description

technical field [0001] The invention relates to the field of pulse power supply systems, in particular to a fast-control power supply system based on the MMC structure of the H-bridge sub-module. Background technique [0002] The fast control power supply is actually a single-phase inverter power supply, but it is different from the conventional inverter power supply: the output power of the power supply is not a sine wave, and its amplitude and frequency have strong randomness, and its current must be according to the plasma The displacement of the bulk current in the vertical direction away from the equilibrium position changes rapidly, so that the plasma is in a relatively balanced position. At the same time, the load current of the power supply requires the ripple to be as small as possible, so the phase-shifting PWM multiplexing technology is applied to meet the requirements of the system. It is usually required that the fast control power supply used in HL-2A devices ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458H02M7/5387H02J7/34
CPCH02M5/458H02J7/345H02M7/53871
Inventor 章辉周细文王英翘宣伟民谈浩楠曹亮亮
Owner 江苏同芯电气科技有限公司