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SequentialFive Leg Inverter for five phase supply

By V. Naga Surekha, A. Krishna Teja, V. Mahesh and N. Sirisha


Multi phase supply will reduce the amplitude and increases the frequency of torque pulsations. This ensures the satisfactory performance of mechanical system inverter-fed motor even at lower speeds. Torque pulsation frequency with appropriate sinusoidal current in PWM operation is quite high and by mechanical inertia the ripples will be filtered easily, which increases the performance of the system. Reliability of the system can be improved as the driver continues running even after the failure of one of the phase, Where reliability is an important criteria five phase supply can be used. The performance of the drive is improved with respect to ripple torque. This paper proposes a sequential Five Leg Inverter to convert three phase to a five phase. Sinusoidal Pulse Width Modulation technique is used to control the output this bring a variable as well as a constant voltage and frequencies. The strength of fluctuations may be reduced with multiphase supply

Topics: 180 0 mode, Five leg VSI, Switching sequence, PWM technique
Year: 2014
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