Control method of novel hybrid excitation synchronous motor 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: 2019-05-10
NANTONG UNIVERSITY
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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 examples. The following examples are explanations of the present invention and the present invention is not limited to the following examples.
[0054] Such as figure 1 As shown, a new hybrid excitation synchronous motor control method without a position sensor includes the following steps:
[0055] Step 1: First establish the voltage equation of the hybrid excitation synchronous motor in the d / q rotating coordinate axis as:
[0056]
[0057] Among them: u d , u q and u f Respectively, the voltage of the stator d / q rotating coordinate axis and the excitation voltage; i d i q and i f Respectively, the current of the stator d / q rotating coordinate axis and the excitation current; R s and R f are motor winding and field winding respectively; L d , L q and L f are stator d / q axis inductance and excitation inductance respectively; M f is the mutual...
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The invention discloses a control method of a novel hybrid excitation synchronous motor without a position sensor. The method comprises steps of in a d / q coordinate axis, establishing a dynamic mathematical model of a hybrid excitation synchronous motor stator voltage, rewritting the dynamic mathematical model in a form of a stator current equation, and establishing a simplified stator current state spatial model based on the stator current equation; determining a reference model and an adjustable model according to a hybrid excitation synchronous motor parameter, and establishing a system state spatial model under generalized errors; establishing a state equation of an error system, determining stability of the error system, and determining a linear compensator matrix; and resolving a rotating speed estimation formula and a rotor position estimation value of the hybrid excitation synchronous motor. Under heavy load and light load, the hybrid excitation synchronous motor without the position sensor runs optimally, so that the control system is more stable and accurate.
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] The hybrid excitation synchronous motor combines the advantages of the electric excitation synchronous motor and the permanent magnet synchronous motor, and has the advantages of large starting torque and wide speed regulation range, especially the wide speed regulation range has a good application effect in the motor drive system and is widely used Used in electric vehicles, ship power generation systems and industrial robots. Hybrid excitation synchronous motors generally obtain high-precision rotor position and speed information through position sensors to complete the closed-loop control of the control system. A fault in the sensor will cause the motor to not work properly, or even cause the entire system to stop running. [0003] I...
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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