Title :
Maximum torque per ampere control of phase advance modulation of a SPM wind generator
Author :
Pathmanathan, Mehanathan ; Soong, Wen L. ; Ertugrul, Nesimi
Author_Institution :
Sch. of Electr. & Electron. Eng., Univ. of Adelaide, Adelaide, SA, Australia
Abstract :
Surface permanent magnet (PM) machines are normally operated by controlling the d-axis and q-axis currents. This paper examines the control of surface PM generators based on controlling the terminal voltage magnitude V and power-factor angle θ. This is well-suited for generator operation when using a switched-mode rectifier and avoids the need for a rotor position sensor. The parameters required for generating a given value of torque with minimum phase current in order to minimize copper losses are derived in this paper. This will be achieved by controlling V and θ to keep the d-axis current equal to zero at low speed, before switching to field-weakening control at higher speeds. Simulated and experimental results will be used to verify the control strategy, and the efficiency achieved.
Keywords :
PWM power convertors; permanent magnet machines; phase modulation; power factor; rectifiers; rotors; switched mode power supplies; torque control; voltage control; wind power; PM generator; SPM wind generator; copper loss; field-weakening control; maximum torque per ampere control; phase advance modulation; phase current; power-factor angle; rotor position sensor; surface permanent magnet machine; switched-mode rectifier; terminal voltage magnitude; Generators; Inverters; Phase modulation; Torque; Trajectory; Voltage control; AC-DC power conversion; permanent magnet generators; pulse-width modulated power converters;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2011 IEEE
Conference_Location :
Phoenix, AZ
Print_ISBN :
978-1-4577-0542-7
DOI :
10.1109/ECCE.2011.6063984