Method and device for determining motor rotor position based on excitation system
A technology of motor rotor and excitation system, applied in the direction of single motor speed/torque control, control system, electronic commutator, etc. Reliability factor, effect of improving reliability
Active Publication Date: 2022-06-21
TSINGHUA UNIV
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[0003] In the related art, the method for obtaining the initial position of the rotor of the main motor includes installing a position sensor on the main motor to detect the initial position of the rotor of the main motor. drop in reliability
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[0081] In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.
[0082] At present, the commonly used generators on medium and large aircrafts are multi-stage electric excitation brushless synchronous motors. The multi-stage electric excitation brushless synchronous motor can start the aero-engine through electric operation, realizing the integration of starting and power generation, thereby simplifying the accessory casing and bleed air device of the engine. In order to realize starting control, a variety of multi-stage motor structures have been proposed, such as three-stage electric excitation brushless synchronous motor. The thr...
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The present application relates to a method, device, computer equipment and storage medium for determining the position of a motor rotor based on an excitation system. The method includes: collecting the first three-phase stator current and the second three-phase stator current of the exciter within a preset period of time, and calculating the first exciter current according to the three-phase symmetrical voltage applied on the stator side of the exciter and the stator voltage equation of the exciter. Back EMF and second exciter back EMF; respectively input the first exciter back EMF and second exciter back EMF to the low-pass filter to obtain the first change and the second change; according to the first change, the second Two changes, the position of the motor rotor is extracted from the preset current change and position table. This method does not depend on the saliency of the motor, and avoids unreliable factors caused by the disappearance or reversal of the saliency of the main motor. The initial position estimation of the rotor of the main motor can also be realized when the rotor of the main motor is stationary, so as to meet the requirement of starting control of the main motor and improve the operation reliability of the main motor.
Description
technical field [0001] The present application relates to the technical field of AC motor drive control, and in particular, to a method and device for determining the rotor position of a motor based on an excitation system. Background technique [0002] At present, the commonly used generators on medium and large aircrafts are multi-stage electric excitation brushless synchronous motors. The multi-stage electric excitation brushless synchronous motor can start the aero-engine through electric operation, realizing the integration of starting and power generation, thereby simplifying the accessory casing and bleed air device of the engine. In order to realize starting control, a variety of multi-stage motor structures have been proposed, such as three-stage electric excitation brushless synchronous motor. The three-stage structure refers to the coaxially installed main motor, exciter and auxiliary exciter. Among them, The exciter rotor windings and the main motor rotor windin...
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IPC IPC(8): H02P6/08H02P6/18H02P6/182
CPCH02P6/08H02P6/182H02P6/183H02P2203/03H02P2203/11
Inventor 毛帅李建秋徐梁飞胡尊严胡家毅张前欧阳明高
Owner TSINGHUA UNIV