Comprehensive Overview of Modern Controllers for Synchronous Reluctance Motor

Table 2

Comprehensive analysis of different motor controls.

	DTC [47]	FOC [53]	SVC [62, 77]	SVM [47]	MPDTC [64]	MPC [71, 78]
Coordinates reference frame	α,β reference frame	d-q reference frame	d-q reference frame	Space vector reference frame	α,β reference frame	d-q reference frame
Principle	Stationary voltage equations	Rotor reference frame equation	Rotor flux and position estimators	Space vector reference frame	Stationary voltage equations	Rotor reference frame equation
Controlled variables	Torque and stator flux	Stator currents (i_d, i_q) and stator voltage (v_d, v_q)	Switching states of the inverter	Rotor position and rotor flux	Torque and stator flux	Stator currents (i_d, i_q) and stator voltage (v_d, v_q)
Rotor position measurement	Not required	Required	Not required	Not required	Not required	Not required
Current control	Without	With	With	With	Without	With
Coordinate transformations	Not required	Required	Required	Required	Not required	Required
Modulator	Not required	Required	Required	Required	Not required	Not required
Switching frequency	Variable	Constant	Variable	Constant	Variable	Variable
Controllers	Hysteresis	Proportional integral controller	Model-based algorithms	Proportional integral controller	Cost function optimization	Cost function optimization
Implementation cost	Lower cost compared to FOC	Moderate	Moderate	Moderate	Costly	Costly
Applications	Electric traction systems	Robotics and automation systems	Electric motor drives in industries	Electric motor drives in renewable energy systems	High-performance robotics and automation systems	Electric vehicle (EV) and hybrid electric vehicle (HEV) applications