Indirect torque control cage type rotor brushless double-fed motor reactive power control method

A squirrel-cage rotor, torque control technology, applied in the control of generators, control of electromechanical brakes, reactive power adjustment/elimination/compensation, etc., can solve problems such as uncontrollable reactive power

Inactive Publication Date: 2012-10-17
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Proposition of the problem: Aiming at the problem of uncontrollable reactive power in the indirect torque control system of the cage-type rotor brushless doubl

Method used

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  • Indirect torque control cage type rotor brushless double-fed motor reactive power control method
  • Indirect torque control cage type rotor brushless double-fed motor reactive power control method
  • Indirect torque control cage type rotor brushless double-fed motor reactive power control method

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Embodiment Construction

[0035] The specific embodiment of the present invention is described in further detail below:

[0036] like figure 1 , implementing the indirect torque control cage rotor brushless doubly-fed motor reactive power control method of the present invention, the device for realizing the method is composed of a diode rectifier 1, a filter capacitor 2, an inverter 3, and a SVPWM generator 4 , comparator 5, speed PI regulator 6, comparator 7, torque PI regulator 8, control winding flux linkage static angle calculation 9, adder 10, comparator 11, flux linkage PI regulator 12, control winding flux linkage Increment Δ ψ s Calculation 13, Control Winding Voltage u αc , u βc Calculation 14, electromagnetic torque and power winding, control winding flux calculation 15, 3 / 2 converter 16, brushless doubly-fed motor 17, reactive power calculation 18, reactive PI regulator 19, comparator 20 composition; SVPWM The six output ends of the generator 4 are connected to the control end of th...

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Abstract

The invention discloses an indirect torque control cage type rotor brushless double-fed motor reactive power control method. The control method is a cage type rotor brushless double-fed motor reactive power, rotation speed and torque control method, particularly an analytic relation between reactive power and a control winding magnetic linkage, as well as a reactive power control structure constructed on the foundation of a cage type rotor brushless double-fed motor indirect torque control system. The control method solves a control problem of reactive power in the brushless double-fed motor indirect torque control. The control system only needs resistors of two stator windings, the required motor parameters are less, the transformation of rotational coordinates is not needed, the control system is provided with a torque internal ring and can realize current amplitude limit; and the control of the cage type rotor brushless double-fed motor reactive power, an electrical torque and a magnetic linkage is realized under an alpha beta rest frame. The control method is simple and the effect is obvious.

Description

technical field [0001] The invention is related to the reactive power control method of the cage-type rotor brushless doubly-fed motor, in more detail a method for controlling the reactive power of the cage-type rotor brushless doubly-fed motor based on indirect torque control. Background technique [0002] The cage-type rotor brushless doubly-fed motor is a new type of motor that has attracted wide attention in recent years. Its structure is that there are two sets of independent three-phase symmetrical windings with different numbers of poles on the stator, that is, the power winding and the control winding. Powered by frequency converter, two sets of stator windings share one iron core. These two sets of windings have no direct electromagnetic coupling, but indirectly transmit electromagnetic power through the modulation of rotor windings; the rotor adopts a special cage structure. The motor is especially suitable for use in large-scale AC speed-regulating transmission sy...

Claims

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Application Information

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IPC IPC(8): H02J3/18H02P21/14
CPCY02E40/30
Inventor 赵荣理王昕路秀芬许永顺张爱玲
Owner TAIYUAN UNIV OF TECH
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