Can the synchronous servo motor be vector controlled?
Is the algorithm used by servo control actually a simplified vector control algorithm?
Vector and v/f are two algorithms of the inverter, which are more important than algorithms, and servo is a way of applying facets.
1. Is the synchronous servo motor capable of vector control?
This is okay, we have done this in several previous projects.
2. Is the algorithm used by servo control actually a simplified vector control algorithm?
You don’t understand this correctly. You need to figure out these questions. “What is the vector control mode? What is the servo control mode? What is the difference?”. The specific explanations for these issues are detailed in the following analysis:
1) About vector control mode –
Vector control, in the simplest terms, is to pass the AC motor speed control through a series of equivalent transformations, equivalent to the speed regulation characteristics of the DC motor, it is so simple, as for in-depth understanding, it is necessary to have a deep understanding of the mathematical model of the inverter. Electrical engineering and other disciplines.
The vector control principle is to imitate the control principle of the DC motor. According to the dynamic mathematical model of the asynchronous motor, the stator current vector is decomposed into the excitation component and the torque component by a series of coordinate transformations, and the torque current component and the excitation component of the motor are respectively controlled. .
The decoupling of the magnetic field and the torque is realized after the rotor field orientation, so as to achieve the purpose of controlling the torque of the asynchronous motor, so that the asynchronous motor obtains the control performance close to the separately excited DC motor.
The specific method is to decompose the stator current vector of the asynchronous motor into a current component (excitation current) that generates a magnetic field and a current component (torque current) that generates a torque, and simultaneously control the amplitude and phase between the two components, that is, The stator current vector is controlled, so this control method is called a vector control method.