Title :
PSPICE simulation of current control of an electronically commutated motor
Author :
Saritha, B. ; Janakiraman, P.A.
Author_Institution :
Dept. of Electr. Eng., IIT, Madras, India
Abstract :
In this paper, a BLDC motor with 120° voltage source inverter is simulated for various relative positions of back-emf with respect to the inverter firing signals. Motors with sinusoidal as well as trapezoidal flux distribution signals are considered. The optimal position of back-emf in the routine 120° firing scheme is considered first. Next, a trapezoidal firing scheme is employed to make the machine to act more like a perfect DC motor, with a view to reduce the ripple-torque and improve the output torque, using a near-180° firing scheme. The trapezoidal line to line voltage is obtained using PWM pulses. The entire analysis is carried out by simulation using PSPICE.
Keywords :
PWM invertors; SPICE; brushless DC motors; commutators; control system synthesis; electric current control; electric potential; machine control; torque control; BLDC motor; PSPICE simulation; PWM pulse; back-emf; brushless DC motor; current control; electronically commutated motor; ripple-torque; trapezoidal firing scheme; trapezoidal flux distribution; voltage source inverter; Brushless DC motors; Current control; DC motors; Electron traps; Pulse width modulation; Pulse width modulation inverters; SPICE; Space vector pulse width modulation; Torque; Voltage;
Conference_Titel :
India Annual Conference, 2004. Proceedings of the IEEE INDICON 2004. First
Print_ISBN :
0-7803-8909-3
DOI :
10.1109/INDICO.2004.1497830
