A new hybrid excitation synchronous motor control method without position sensor
A technology of hybrid excitation synchronization and motor control, which is applied in the direction of motor generator control, electronic commutation motor control, control system, etc., to achieve strong robustness
Active Publication Date: 2022-06-17
NANTONG UNIVERSITY
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Problems solved by technology
However, there is no corresponding application in the hybrid excitation synchronous motor, so it is necessary to design a new hybrid excitation synchronous motor position sensorless control method based on model reference self-adaptation, so as to improve the control accuracy and anti-interference of the control system
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[0053] The present invention will be further described in detail below in conjunction with the accompanying drawings and through the examples. The following examples are to explain the present invention and the present invention is not limited to the following examples.
[0054] like figure 1 As shown in the figure, a novel hybrid excitation synchronous motor control method without position sensor includes the following steps:
[0055] Step 1: First, establish the voltage equation of the hybrid excitation synchronous motor in the d / q rotation axis as:
[0056]
[0057] where: u d , u q and u f are the voltage of the stator d / q rotating coordinate axis and the excitation voltage, respectively; i d , i q and i f are the current of the stator d / q rotating coordinate axis and the excitation current, respectively; R s and R f are the motor winding and the excitation winding, respectively; L d , L q and L f are the stator d / q axis inductance and the excitation inductan...
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The invention discloses a new hybrid excitation synchronous motor control method without a position sensor. Under the d / q coordinate axis, the dynamic mathematical model of the stator voltage of the hybrid excitation synchronous motor is established and rewritten into the form of the stator current equation. Based on this Establish a simplified stator current state-space model; determine the reference model and adjustable model according to the parameters of the hybrid excitation synchronous motor, and establish the state-space model of the system under generalized error; establish the state equation of the error system, judge the stability of the error system, and determine the linearity Compensator matrix; solves the speed estimation formula and rotor position estimation of the hybrid excitation synchronous motor. The invention realizes the optimal operation of the hybrid excitation synchronous motor without a position sensor under light load and heavy load, and improves the stability and accuracy of the control system.
Description
technical field [0001] The invention relates to a novel hybrid excitation synchronous motor control method, in particular to a novel hybrid excitation synchronous motor control method without a position sensor. Background technique [0002] Hybrid excitation synchronous motor combines the advantages of electric excitation synchronous motor and permanent magnet synchronous motor, and has the advantages of large starting torque and wide speed regulation range, especially the wide speed regulation range plays a good role in the motor drive system and is widely used In electric vehicles, ship power generation systems and industrial robots. The hybrid excitation synchronous motor generally obtains the rotor position and speed information with high precision through the position sensor, and completes the closed-loop control of the control system. The failure of the sensor can make the motor not work properly, or even cause the entire system to stop running. [0003] In recent ye...
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IPC IPC(8): H02P21/18H02P21/24
Inventor 张蔚杨泽贤梁惺彦於锋王家乐
Owner NANTONG UNIVERSITY