Multi three-phase AC excitation pumped storage asynchronous generator/motor

A pumped storage and electric motor technology, applied in the direction of asynchronous induction motors, synchronous generators, electrical components, etc., can solve problems such as complex inverter structure, grid harmonic pollution, low power factor, etc., to solve and improve heat generation problems Potential waveform and effect of improving reliability
CN1705209AInactive Publication Date: 2005-12-07ZHONGYUAN ENGINEERING COLLEGE
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHONGYUAN ENGINEERING COLLEGE
Publication Date
2005-12-07
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

This invention refers to a rotor more three-phase ac excitation water pumping energy storage asynchronous generator / motor adopting inverter to supply power, which contains three-phase stator windings directly connected with power frequency network, plurality of groups of three-phase symmetry windings independent in circuit, there is only magnetic circuit coupling among groups without direction relation in electric circuit, the each star connected three-phase windings has independent zero point, the angle connected windings is independent, the total windings phases are multiple times of three, e.g. 2X3, 3X3...NX3 (n is the positive integer greater than 2), the displacement angle can adopt 0<=beta<180 degree / (nX3), or other angle.
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Description

Technical field:

[0001] The invention relates to a multi-three-phase AC excitation pumped storage asynchronous generator / motor that uses an inverter to supply power to rotor windings. Background technique:

[0002] In recent years, countries around the world are actively building pumped storage power stations due to the need for power peak regulation, and pumped storage units are developing in the direction of high speed and large capacity. Generally, the storage capacity of the pumped storage power station is small, and the power generation head and pumping head vary widely, and the power generation head and pumping head are also different. In order to meet the requirements of pumped storage units operating within a relatively large water head (head) range, foreign countries began to develop speed-adjustable pumped storage units in the late 1960s. Compared with conventional fixed-speed units, the use of speed-regulating units in pumped storage power stations has the follow...

Claims

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