High-reliability power supply system, method and frequency converter system

A technology of power supply system and power supply method, which is applied in the field of power supply, can solve problems such as easy power failure, high cost, and unstable switching, and achieve the effects of saving time, reducing system cost, and improving system reliability

Inactive Publication Date: 2011-10-12
EMERSON NETWORK POWER CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

Among them, the detection relay is connected in parallel to the 380V mains circuit, and the system judges whether the 380V mains circuit is charged, so as to select the source of the main control power supply. There is a time from detection to execution to switching, which is relatively long. In order to ensure that the main control does not lose power, it is necessary to use batteries or capacitors for support, adding multiple electrical components. The above unfavorable factors make switching unstable and costly

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  • High-reliability power supply system, method and frequency converter system
  • High-reliability power supply system, method and frequency converter system
  • High-reliability power supply system, method and frequency converter system

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Embodiment Construction

[0032] The present invention will be further described in detail through the embodiments below in conjunction with the accompanying drawings.

[0033] see figure 1 , in one embodiment, the high-reliability power supply system includes at least a first power supply module 100 and a second power supply module 200, the first power supply module is connected to the power input INPUT1, the second power supply module is connected to the power input INPUT2, and the first power supply module 100 and the second power supply module 200 are connected in parallel to the input terminal of the load, and supply power to the load at the same time. like figure 1 As shown, the power input INPUT1 and the power input INPUT2 are two independent power sources, which are respectively converted by independent first and second power modules and output to the load. The dual power supplies supply power to the load at the same time. When one power supply fails or the power supply is lost, the other pow...

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Abstract

The invention discloses a high-reliability power supply system, which at least comprises a first power module and a second power module, wherein the first power module and the second power module are connected in parallel to a load input end; and the first power module and the second power module are respectively connected with different power inputs. The invention also discloses a frequency converter system having the power supply system. The invention also discloses a high-reliability power supply method, which comprises the following steps of: at least providing the first power module and the second power module, and connecting in parallel to the load input end; and respectively connecting the different power inputs with the first power module and the second power module, and supplying power to a load. By seamless switching of power hot standby, the high reliability of load power supplying can be obtained, and electrical elements required by cold standby power supply can be saved.

Description

technical field [0001] The invention relates to power supply technology, in particular to a high-reliability power supply system, method and frequency converter system. Background technique [0002] High reliability requires the equipment to be equipped with more than two input power sources to supply power to the equipment. For example, in the existing medium-voltage inverter system, in order to ensure the reliability of the main control power supply, two power sources are required. In this case, there is a 380V The problem of mutual switching power supply between the mains and the 380V power supply provided by the auxiliary winding of the 6kV / 10kV high-voltage transformer. The existing power supply scheme is to adopt the high and low voltage power circuit cold backup mode for the incoming power supply of a single primary power module. The principle is to detect the high and low voltage power sources. The power supply is used to supply power to the primary power module. A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J1/10H02J9/06
Inventor 韩晋吴华勇王伟鹏
Owner EMERSON NETWORK POWER CO LTD
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