Title :
Average-value model of the brushless D 120° inverter system
Author :
Sudhoff, S.D. ; Krause, P.C.
Author_Institution :
Sch. of Electr. Eng., Purdue Univ., West Lafayette, IN, USA
fDate :
9/1/1990 12:00:00 AM
Abstract :
An average-value model of a 120° brushless DC motor is developed by transforming the stator variables to the rotor reference frame and expressing the average applied voltages in this reference frame over a switching interval of the inverter. The performance as predicted by the average-value model is shown to be accurate for normal operation by comparison with the performance calculated using a detailed model. The average-value model becomes less accurate when the phase-shift angle is varied markedly from normal. This model should be very useful to the control system analyst and as an educational tool, since it allows a straightforward comparison with the equations which describe the 180° brushless DC motor
Keywords :
DC motors; invertors; rotors; stators; average-value model; brushless DC motor; inverter system; phase-shift angle; rotor reference frame; stator variables; switching interval; Couplings; Equations; Inductance; Inverters; Magnetic analysis; Magnetic flux; Stator windings; Synchronous machines; Torque; Voltage;
Journal_Title :
Energy Conversion, IEEE Transactions on
