High-power high-frequency switching power supply module and device

A high-frequency switching power supply and high-power technology, applied in the power supply field, can solve the problems of high output voltage stress of full-bridge converters, narrow output voltage range of LLC resonant converters, complex frequency modulation control, etc., to achieve high efficiency and high power Convert, realize constant frequency control and wide output voltage range, high power factor effect

Pending Publication Date: 2020-08-25
安徽金屹能源发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Conventional LLC resonant converters have a narrow output voltage range and require frequency modulation, which makes frequency modulation control complex; conventional phase-shift control full-bridge converters have high output voltage stress, and the high-frequency rectifier output part requires freewheeling and filter inductors

Method used

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  • High-power high-frequency switching power supply module and device
  • High-power high-frequency switching power supply module and device
  • High-power high-frequency switching power supply module and device

Examples

Experimental program
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Effect test

Embodiment 1

[0039]see figure 1 and figure 2 A high-power high-frequency switching power supply module consists of an AC input port 1, a rectifier bridge module 2, a power factor correction circuit 3, an LC filter circuit 4, and at least one high-frequency DC / DC conversion module 5 (this implementation example uses three high-frequency It is composed of frequency DC / DC conversion module as an example), output filter capacitor 8 , output current sensor 9 , DC output port 10 , and control module 11 .

[0040] The AC input port 1 is connected to three-phase AC power, and the three-phase AC power is transformed into The high-performance direct current is output through the direct current output port 10 to supply power to the load.

[0041] The rectifier bridge module 2 is a three-phase bridge-type uncontrollable rectifier circuit composed of six diodes, the input is three-phase alternating current, the output is direct current with large pulsation, and the power factor correction circuit 2 ...

Embodiment 2

[0049] see image 3 , the difference between this implementation example and implementation example 1 is: the output ends of the first DC / DC conversion module 5, the second DC / DC conversion module 6, and the third DC / DC conversion module 7 are connected in parallel, and the parallel connection The output filter capacitor 8 is connected in parallel between the output positive and negative poles, and the circuit topology and working principle of other parts are the same as those of the first implementation example. A high-power high-frequency switching power supply module in this implementation example can be applied to occasions requiring higher efficiency and larger current output.

Embodiment 3

[0051] see Figure 4 , the embodiment of the present invention also discloses a high-power high-frequency switching power supply device, including M high-power high-frequency switching power supply modules (M is a natural number greater than 1), installed in an electromagnetic shielding cabinet as a whole, such as the first three The high-power high-frequency switching power supply modules are high-power high-frequency switching power supply modules 31, 32, and 33. The high-power high-frequency switching power supply modules adopt a modular design. M power supply modules can be connected in parallel to achieve higher power output. All modules All have the same structure and interface. Multiple power supply modules can be connected in parallel and interchanged arbitrarily, which is convenient for equipment combination, derivation, replacement and redundant use. M high-frequency switching power supply modules are installed together with the monitoring module 34 and the operation ...

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Abstract

The invention discloses a high-power high-frequency switching power supply module and a device. The high-power high-frequency switching power supply module comprises an alternating-current input port,a rectifier bridge module, a power factor correction circuit, an LC filter circuit, at least one high-frequency DC/DC conversion module, an output filter capacitor, an output current sensor, a direct-current output port and a control module. The high-frequency DC/DC conversion module is composed of a high-frequency inverter bridge, a resonant inductor, a resonant capacitor, a high-frequency transformer, a high-frequency rectifying circuit, a high-frequency filtering capacitor and a current transformer. The input ends of N high-frequency DC/DC conversion modules are connected in parallel, andthe output ends of N high-frequency DC/DC conversion modules are connected in series or in parallel. The power supply module is simple in overall structure, can achieve high-power, low-ripple and low-load effect output, and can solve the technical problems that some equipment power supplies cannot meet the requirements of high power, high efficiency, high power factor, high power density, low output ripple, and being easy to replace and maintain at the same time.

Description

technical field [0001] The invention relates to the field of power supply technology, in particular to a high-power high-frequency switching power supply module and device. Background technique [0002] Some devices have limitations on the power sources they can power. The power supply must meet the requirements of technical parameters such as high power, high efficiency, low ripple, low load effect, and high power factor at the same time. [0003] For example, some special transmitter systems need a high-power power supply that meets these requirements at the same time, and also require the operating frequency of the switching devices in the power supply to be as high as possible. This is not only to reduce the size of the transformer and output filter, but also to avoid Interference occurs when the power supply couples to the operating frequency of other equipment in a particular system. [0004] In fact, the switching loss is proportional to the switching frequency. At ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/458H02M3/335H02M1/092
CPCH02M1/092H02M3/33523H02M5/458H02M1/0077Y02B70/10
Inventor 董长程子平
Owner 安徽金屹能源发展有限公司
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