Energy-storing phase modulation motor

A technology of energy storage and phase modulation, which is applied in the fields of generators, motors and converters to achieve high inertia energy storage and improved stability

Inactive Publication Date: 2005-03-16
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to essentially improve the stability of the power system operation, a fast and efficient active power control device is an indispensable device, but there is no such device in the power system at present

Method used

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Embodiment Construction

[0024] The energy storage phase-modulating motor can adopt a vertical or horizontal structure according to specific needs, and generally adopts a vertical structure. figure 1 It is a schematic diagram of the implementation state of a 50MVA energy storage phase modulation motor with a vertical structure. The motor stator core and the three-phase winding 3 are fixed in the protective cover 11, the rotor core and the three-phase winding 4 are fixedly connected to the rotating shaft 14 through the rotor bracket 5, the rotating shaft is supported by the upper guide bearing 1 and the lower guide bearing 15, the upper guide bearing 1 and the The lower guide bearing 15 can be a contact conventional bearing or a non-contact permanent magnet guide bearing; the upper end of the rotating shaft 14 is connected to the slip ring and the brush device 2 to feed the excitation current; the lower section of the rotating shaft 14 is equipped with a flywheel with a large moment of inertia 6. The m...

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Abstract

The invention is an energy-storage phase-adjusting electric machine, improving the structure of a synchronous phase-adjusting machine to increase rotor movement of inertia so as to store energy, where its stator and rotor are both composed of a three-phase symmetrical winding, the rotor winding current is fed in through slide ring and the stator winding is connected with a power system; its rotor iron core adopts a laminate structure; its rotor movement of inertia is very large or it installs a flying wheel with very large movement of inertia, where the movement of inertia is above twice larger than that of routine equal-capacity synchronous phase-adjusting machine; its rotor exciting current is an external controllable three-phase AC-DC exciting current. A flexible power regulation and control device composed of it has the functions of energy storage, electric power generation and phase adjustment, and can extremely improve static, transient and voltage stabilities of a system.

Description

technical field [0001] The invention belongs to the technical field of generators, motors and converters. It is used for power system control, can store / release energy quickly and efficiently, balances the unbalanced power that occurs after the system is disturbed, and enhances the stability of the power system; the motor simultaneously It can also quickly provide reactive power compensation and stabilize the system voltage. Background technique [0002] The power system is a unified whole composed of power generation, power transmission, power distribution and power consumption equipment. Since there is no large-capacity and fast access to electric energy in the current power system, the production and consumption of electric energy must be kept in a state of power balance at all times. The generator rotors must all rotate synchronously at the same electrical angular velocity. Once the system is disturbed (such as equipment failure), it will cause the power imbalance of th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K17/24H02K17/26H02K19/00
Inventor 潘垣程时杰于克训康勇文劲宇段献忠王少荣
Owner HUAZHONG UNIV OF SCI & TECH
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