Title :
PWM-VSI inverter-assisted stand-alone dual stator winding induction generator
Author :
Ojo, Olorunfemi ; Davidso, Innocent Ewean
Author_Institution :
Dept. of Electr. & Comput. Eng., Tennessee Technol. Univ., Cookeville, TN, USA
Abstract :
This paper presents a novel usage of a dual stator winding three-phase induction machine as a stand-alone generator with both controlled output load voltage magnitude and frequency. This generator, with both three-phase power and control windings housed in the stator structure, has the load connected to the power winding and a three-phase pulsewidth modulation (PWM) voltage-source inverter sourcing the control winding. The input to the PWM inverter is either a battery source or a charged DC capacitor. The operational characteristics of these generator schemes with either of the two inverter sources are investigated and shown to have desirable performance. How the load voltage magnitude depends on the various control and design parameters such as rotor speed, compensating capacitance, and load impedance is determined using a detailed mathematical model of the system.
Keywords :
PWM invertors; asynchronous generators; capacitance; electric impedance; frequency control; load regulation; machine control; stators; voltage control; PWM voltage-source inverter; PWM-VSI; battery source; charged DC capacitor; compensating capacitance; control winding sourcing; controlled output load frequency; controlled output load voltage magnitude; dual stator winding induction generator; load impedance; mathematical model; power winding; rotor speed; stand-alone induction generator; stator structure; three-phase induction machine; three-phase pulsewidth modulation VSI; Batteries; Frequency; Induction generators; Induction machines; Power generation; Pulse generation; Pulse inverters; Pulse width modulation inverters; Stator windings; Voltage control;
Journal_Title :
Industry Applications, IEEE Transactions on
