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This paper explains a method to calculate the capacitance value of a 3-Ø cage induction motor working as a generator in the self-excited mode of operation. The synchronous impedance test method has been reviewed. The capacitance value is determined from the manufacturer data. The effect of voltage variation with different capacitances has been evaluated at constant speed. Performance of self-excited...
This paper presents the voltage build-up process and the terminal voltage control of a stand-alone self-excited induction generator (SEIG) using direct vector control (DVC) technique under variable speeds and different types of load. Here, the three-phase SEIG is excited by a pulse-width modulated voltage source inverter (PWM-VSI) connected to a single-capacitor on the DC side with a start-up battery...
A doubly - fed induction generator (DFIG) system is presented in terms of its natural and power variables as the state variables. The natural variables are the electromagnetic torque (Te), the reactive torque (Tr), the magnitude of rotor flux linkage (λr), the magnitude of stator flux linkage (λs), and the rotor speed (ω). These are used in modelling the induction machine and the machine side converter...
This paper presents a fundamental development and analysis of the induction machine connected via a transmission line to an infinite bus system. A third order dynamic model is used to represent the induction generator and the obtained resultant nonlinear system equations are analyzed to calculate a condition that guarantees the existence of equilibrium points to the dynamic system. This condition...
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