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High frequency soft-switching technology switching power supply

A switching power supply and soft switching technology, applied in the direction of high-efficiency power electronic conversion, electrical components, adjusting electrical variables, etc., can solve the problems of low volume, weight-to-volume ratio, low control signal stability, low work efficiency and density, etc. Achieve the effect of improving technical indicators, enhancing overcurrent protection function, and reducing pollution

Inactive Publication Date: 2012-08-08
江苏王牌电机制造有限公司
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  • Summary
  • Abstract
  • Description
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Problems solved by technology

[0003] The present invention provides a switching power supply with high-frequency soft switching technology, aiming to solve the loss caused by the switch state switching of the existing high-frequency switching power supply, the volume, weight and volume ratio are low, and the work efficiency and density are low; harmonic pollution is generated during work, and even The flow is not ideal, the control signal stability is not high, etc.

Method used

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  • High frequency soft-switching technology switching power supply
  • High frequency soft-switching technology switching power supply

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Embodiment Construction

[0008] like figure 1 As shown, the high-frequency soft-switching technology switching power supply includes a DC / AC inverter control module 1, a first LC filter module 2, a power frequency rectifier module 3, a high-frequency rectifier module 4, a second LC filter module 5, and a shift pulse The wide modulation module 6, the input terminal and the output terminal of the DC / AC inverter control module 1 are respectively connected to the power frequency rectification module 3 and the high frequency rectification module 4, the first LC filter module 2 is connected to the power frequency rectification module 3, and the second LC filter module The module 5 is connected to the output end of the high-frequency rectification module 4, the input end of the first LC filter module 2 is connected to the AC input circuit 7, the output end of the second LC filter module 5 is connected to the DC output circuit 8, and the shifting pulse width modulation module 6 One input end of the first LC f...

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Abstract

The invention discloses a high frequency soft-switching technology switching power supply which is mainly for direct current switching power supply designed for the structure of a hybrid maglev system and comprises a DC / AC inverter control module, a first LC filtering module, a power frequency rectifier module, a high frequency rectifier module, a second LC filtering module and a transposition pulse width modulation module. Through the connection of the above modules, the switching power supply has the advantages of small volume, light weight, low noise, improved work efficiency and power density, less pollution to grid, fast dynamic response, stable output, and easy examination and repair.

Description

technical field [0001] The invention discloses a switching power supply with high-frequency soft switching technology, which is mainly aimed at a DC switching power supply designed in the structural form of a hybrid magnetic levitation system. . Background technique [0002] The existing high-frequency switching power supply has the following defects: 1. Most of them adopt hard switching conversion technology, which will cause large switching loss at the moment of switching state, low volume, weight and volume, and low working efficiency and power density; 2. , the hard switching process will produce a large EMI problem, that is, the high-frequency switching power supply interferes with the equipment of the power grid, and will cause large harmonic pollution to the power grid during work; 3. The dynamic response process is low, and the current average current is The problem has not been better resolved. Contents of the invention [0003] The present invention provides a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/24
CPCY02B70/1491Y02B70/10
Inventor 明正峰
Owner 江苏王牌电机制造有限公司
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