A rectification device, a rectification method and its corresponding voltage conversion system
A rectifier device and rectifier technology, which is applied in the direction of converting irreversible AC power input into DC power output, etc., can solve the problems of low efficiency and large switching loss, and achieve the effects of accurate, simple control and wide applicability of the device.
Active Publication Date: 2016-01-27
ALCATEL LUCENT SHANGHAI BELL CO LTD
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However, the switching loss in this mode is relatively large, so the disadvantage of this mode is that the efficiency is low at light load
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[0027] figure 1 A schematic diagram of a voltage conversion system using a rectifying device according to an embodiment of the present invention is shown. The voltage changing system 10 includes a DC / DC converter 101, a transformer 102, and a rectifying device 103 according to an embodiment of the present invention.
[0028] The rectification device 103 includes two first rectifiers 1031 , two second rectifiers 1032 and two switching units 1033 . As shown in the figure, wherein, the first rectifier 1031, the second rectifier 1032 and the switching unit 1033 respectively constitute two groups of channels, that is, the first channel (output 1) and the second channel (output 2), which are respectively connected to the transformer 102 two outputs. In this embodiment, since the transformer 102 has two outputs, the rectifying device 103 has two sets of channels in parallel, but those skilled in the art should understand that, according to the output number of the transformer, for ...
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The invention provides a rectifying device, a rectifying method as well as a voltage transformation system corresponding to the rectifying device and the rectifying method. The rectifying device comprises a first rectifier, a second rectifier and a switching unit, wherein the first and second rectifiers have different load / efficiency characteristics; the switching unit is used for switching the practical work of the first rectifier or the second rectifier according to a loading condition of the rectifying device; and the voltage transformation system comprises a DC (direct current) / DC convertor, a transformer and the rectifying device. The rectifying method comprises the following steps of: providing the first rectifier; providing the second rectifier, wherein the first rectifier and the second rectifier have different load / efficiency characteristics; and switching the practical work of the first rectifier or the second rectifier according to the loading condition of the rectifying device. The rectifying device provided by the invention switches the rectifier in practical work according to the loading condition, so that the design scheme of a power supply with high efficiency can have higher efficiency, is more environment-friendly and energy-saving, and the rectifying device has wider applicability.
Description
technical field [0001] The invention relates to a rectification device, in particular to a rectification device, a rectification method and a corresponding voltage conversion system for further improving power conversion efficiency. Background technique [0002] At present, the use of Internet phone terminals is very common, especially in hotels and inside enterprises. The current Internet phone terminal usually has an interface, which can not only transmit data, but also provide power for the Internet phone terminal, and each Internet phone terminal is connected to a Power Over Ethernet (PowerOverEthernet) switch, which provides data to each network terminal and power supply. Therefore, the load on the POE switch is relatively large. In order to enable the POE switch to smoothly promote the connected VoIP terminal, it is very important to reduce the power consumption of the VoIP terminal. In addition, according to POEClass3, the maximum power consumption of the VoIP term...
Claims
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IPC IPC(8): H02M7/02
Inventor 陈海峰张岩
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD