Simulation of DC Motors Fed from Photovoltaic Arrays CLOSED-FORM SOLUTION FOR THE PERFORMANCE CHARACTRISTICS OF A PHOTOVOLTAIC ARRAY/DC MOTOR SYSTEM Modeling and Simulation of a Matrix Converter / Induction Motor System AN EQUIVALENT CIRCUIT OF A MATRIX CONVERTER WITH PASSIVE OR ACTIVE LOADS A DIRECT ANALYTICAL APPROACH FOR DETERMINATION OF OPERATING FREQUENCY OF A SELF-EXCITED INDUCTION GENERATOR FEEDING AN INDUCTION MOTOR A NOVEL APPROACH FOR THE ANALYSIS OF A THYRISTOR- CONTROLLED INDUCTION MOTOR Closed-Form Solution of a Three-Phase Voltage Source Inverter Feeding a Three-Phase Induction Motor