Power supply system

A technology of power supply system and AC power supply, applied in control/regulation system, electrical components, regulating electrical variables, etc., can solve the problems of low efficiency and large power loss, and achieve the effect of reducing loss and improving efficiency

Active Publication Date: 2011-09-28
VERTIV CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0018] The technical problem to be solved by the present invention is to provide a high-efficiency and low-lo

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Embodiment Construction

[0065] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0066] Figure 5 It is a structural schematic diagram of a multi-phase AC-DC power supply system according to an embodiment of the present invention. The multiphase AC-DC power supply system includes a filter 501 , a switch matrix 502 , a resonant network 503 and a rectifier 504 . Filter 501 is connected to the polyphase AC power input. The switch matrix 502 is connected to the multi-phase AC power input filtered by the filter 501, and the switch matrix 502 includes a plurality of bidirectional switch components for processing the multi-phase AC power input and outputting a DC voltage to realize ...

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Abstract

The invention relates to a power supply system, which. The power supply system comprises a filter, a switch matrix, a resonant network and a rectifier, wherein the filter is connected with an input multi-phase alternating-current power supply; a switch matrix is connected with the multi-phase alternating-current power supply input filtered by using the filter, comprises a plurality of bilateral switch components and used for performing high-frequency processing on the multi-phase alternating current input to finally realize DC (Direct Current) voltage output; the resonant network is connected with the switch matrix and is used for realizing resonance and controlling output current to be sinusoidal current; and the rectifier is connected with the resonant network and is used for rectifying and filtering the sinusoidal current output by the resonant network. Due to the adoption of the technical scheme of the invention, at least two phases of AC (Alternating Current) power supply inputs are converted into direct current; zero-voltage switch-on/off can be realized by using the switch matrix, and zero-current switch-on/off can be realized by using a synchronous rectifying switch in the rectifier; and the efficiency is increased and the consumption of the switching process is reduced greatly.

Description

technical field [0001] The present invention relates to the field of power supply, more specifically, to a power supply system. Background technique [0002] Usually, the communication power supply module is used to convert AC voltage to DC voltage to supply power to communication equipment and batteries. Most modern communication power supplies are switched mode power supplies (SMPS for short), which use pulse width modulation to control output voltage, output current and input current. Generally, the topology of a switching power supply includes the following components: [0003] 1) Input filter: Provide input current that meets EMI and harmonic current requirements. [0004] 2) Input current shaping circuit: Most of them adopt boost power factor correction circuit (Power Factor Correction, referred to as PFC), which converts the AC input voltage into high-voltage DC voltage, and controls the input current to be a sinusoidal current at the same time. [0005] 3) DCDC con...

Claims

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Application Information

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IPC IPC(8): H02M3/338H02M7/12
CPCY02B70/1433Y02B70/1491Y02B70/10
Inventor 吕有根
Owner VERTIV CORP
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