Abstract
In this paper, an analytical model in the $dq$ reference frame is developed to recognize the steady state of the self-excited reluctance generator considering no-load and resistive load conditions. A fast method to estimate the minimum capacitance requirement is proposed. Experiments have been carried out to verify the analytical results. After that, attention is paid to the capability of self-excitation in the reluctance generator with different residual magnetisms in the rotor. Different levels of residual rotor magnetism are achieved by different magnetizing dc currents. An indicative value of phase current is defined to determine the self-excitation and the required minimum residual rotor magnetism for self-excitation in the reluctance generator connected with different capacitances is discussed. At last, the capability of self-excitation in the reluctance generator by connecting charged capacitors is investigated.
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