Hirak Patangia

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A common technique employed to eliminate switching harmonics is programmed SHE (Selective Harmonic Elimination) which requires the solution of a set of nonlinear equations. Typically, the method calculates the switching angles for each modulation depth offline using iterative computations and programmed into a digital processor. These values are recalled on(More)
The paper presents an analytical approach to find switching angles for an optimal PWM signal and its implementation using an ordinary microcontroller. The solution is in closed form that eliminates the need for numerical solution to find the transition angles. The disadvantage in iterative computation is overhead in computational effort as it requires a PC(More)
The paper presents a novel multilevel PWM strategy that employs a split section reference waveform with phase-shifted carriers to produce harmonically superior PWM signals. The multilevel PWM switching patterns provide a higher dynamic range than what has been reported in the literature. The key difference of this method is that it maintains a fixed(More)
Selective Harmonic Elimination (SHE) is a wellknown power electronics technique that is commonly used to suppress the noise harmonics in applications such as inverter design and AC Drives. But the existing methods are complex to be readily applied in real-time applications such as motorcontrol and frequency tuning. In addition, these methods involve tedious(More)
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