Single and three-phase switching device for outputs of three independent input alternating-current sources
A three-phase switching, AC source technology, applied in the direction of conversion equipment that can be converted to DC without intermediate conversion, and can solve problems such as increasing control complexity.
Active Publication Date: 2014-12-17
XIAN ACTIONPOWER ELECTRIC
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This approach increases the complexity of the control
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[0018] The present invention will be further described below in conjunction with the embodiments shown in the accompanying drawings.
[0019] Refer to attached figure 1 shown. The single-three-phase switching device with three independent input AC sources and output consists of a coupling unit and a single-three-phase switching unit. Three independent input AC sources have synchronization signals for simultaneous output.
[0020] The coupling unit includes three transformers. The primary side of each transformer is correspondingly connected to the live wire of an independent AC source. The output terminals of the three primary sides of the three transformers have a common node, and the node is point A. The secondary sides of the three transformers are connected in series to form a loop. . The single-three-phase switching unit includes a first switch group and a second switch group, and the first switch group and the second switch group both include two control switches, and...
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The invention relates to a single and three-phase switching device for outputs of three independent input alternating-current sources. The input end of the input side of the single and three-phase switching device is provided with three alternating-current sources which are independent and provided with synchronizing signals, and the independent alternating-current sources are adjustable in frequency, phase and amplitude, and the output side of the single and three-phase switching device is provided with a single-phase or alternating-current source. The single and three-phase switching device comprises a coupling unit and a single and three-phase switching unit. The principle adopted in the single and three-phase switching device lies in that a primary-side relay and a secondary-side relay of a coupling transformer are not closed simultaneously, and when the secondary-side relay is absorbed, the alternating-current source is in three-phase output; when the primary-side relay is closed, the alternating-current supply is in single-phase output. The single and three-phase switching device is simple and easy to implement, the single and three-phase switching of the alternating-current source can be realized, and current-sharing processing of the single-phase output can be completed without complex control.
Description
technical field [0001] The invention relates to a three-independent input AC source output single-three-phase switching device, which can realize single-three-phase output switching of three independent AC sources with synchronous signals through the switching of relays. Background technique [0002] The traditional single-phase three-phase AC power switching device inputs three independent AC sources. When outputting a single phase, it needs to sample the current of the independent AC sources and realize current sharing processing through closed-loop control. This approach increases the complexity of the control. Contents of the invention [0003] The purpose of the present invention is to provide a simple and easy-to-implement single-phase three-phase AC power switching device. [0004] In order to achieve the above object, the technical scheme adopted in the present invention is: [0005] A single-three-phase switching device with output from three independent input A...
Claims
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IPC IPC(8): H02M5/32
Inventor 韩海港
Owner XIAN ACTIONPOWER ELECTRIC