Phase shifter for three-phase voltage and method for phase shifting of three-phase voltage

A three-phase voltage, phase shifter technology, applied in the direction of conversion equipment that can be converted to DC without intermediate conversion, can solve the problem that the transformer-type phase shifter cannot meet the application requirements and so on

Active Publication Date: 2014-07-09
STATE GRID CORP OF CHINA +1
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Problems solved by technology

[0020] The present invention provides a three-phase voltage phase shifter and a three-phase voltage phase shifting method to at least solve the problem that the transformer-type phase shifter in the related art cannot meet the application requirements

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  • Phase shifter for three-phase voltage and method for phase shifting of three-phase voltage

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Embodiment Construction

[0037] Hereinafter, the present invention will be described in detail with reference to the drawings and examples. It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0038] This embodiment provides a three-phase voltage phase shifter, such as figure 1 As shown, the three-phase voltage phase shifter includes: a three-phase isolation transformer 102, the first connection end of the three-phase isolation transformer is connected to the compensation transformer, and the second connection end of the three-phase isolation transformer is connected to the first connection of the voltage regulator The terminal is used to adjust the phase of the voltage of the compensation transformer according to the transformation ratio of the voltage regulator; the voltage regulator 104, the second connection end of the voltage regulator is connected to the compensation transformer, and...

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Abstract

The invention provides a phase shifter for a three-phase voltage and a method for phase shifting of the three-phase voltage. The phase shifter for the three-phase voltage comprises a three-phase isolation transformer, a voltage regulator and a compensation transformer, wherein the first connection end of the three-phase isolation transformer is connected to the compensation transformer, and the second connection end of the three-phase isolation transformer is connected to the first connection end of the voltage regulator, the three-phase isolation transformer is used for regulating the phase position of the voltage of the compensation transformer according to the ratio of transformation of the voltage regulator, the second connection end of the voltage regulator is connected to the compensation transformer, the voltage regulator is used for regulating the amplitude of the voltage of the compensation transformer according to the ratio of transformation of the voltage regulator, the auxiliary side of the compensation transformer is connected to a three-phase live wire of a three-phase power supply in series, and the compensation transformer is used for series connection and superposition of the voltage, with the phase position and the amplitude regulated, of the compensation transformer and the voltage of the three-phase voltage. By the adoption of the phase shifter for the three-phase voltage and the method for phase shifting of the three-phase voltage, the problem that according to relevant techniques, application requirements can not be met through a transformer type phase shifter is solved, and the requirements of different application scenarios can be met.

Description

technical field [0001] The invention relates to the field of power supply, in particular to a three-phase voltage phase shifter and a three-phase voltage phase shifting method. Background technique [0002] Most of the important power loads are powered by dual power sources, and the switching between the two power sources is realized through a quick switch to ensure the reliability of its power supply. When the voltage phases between the two power sources are different, the switching time is also different, the voltage drop time caused by it is also different, and the impact on sensitive loads is also different. [0003] The phase shifter organically combines the transformer phase-shifting technology with digital measurement technology, which makes the phase-shifting adjustment precision high, the reading is accurate and intuitive, the output voltage and current are adjustable, the output waveform is good, the operation is reliable, the operation is convenient, and it can me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M5/10
Inventor 段大鹏王鹏于希娟赵贺王语洁任志刚
Owner STATE GRID CORP OF CHINA
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