Abstract: A combined random carrier pulse width modulation principle in space vector pulse width to generate random pulse width modulation generation using an asymmetric frequency multicarrier called multicarrier random space vector pulse width modulation. The space vector pulse width modulation switching vectors with different frequency carrier are chosen with the aid of a random bi-nary bit generator. The multi carrier random space vector modulation generates the pulses with a randomized triangular carrier (1 to 4 kHz), while the conventional random pulse width modulation method contains a random pulse position with a fixed frequency triangular carrier. The four carrier signals with different frequencies of (1 to 4 kHz) are made to generate the randomness carrier. In order to merge these random carrier signals four 3x1 multiplexers are used, and finally, the MUX output is given to the 4x1 Multiplexer. The 8 bit pseudo random binary sequence as well as 16 bit pseudo random binary sequence generator are used to generate random 0 and 1 sequence which manipulate the random combination of four different carrier frequency signals. These voltage source inverter are needed in order to provide several advantages such as Harmonics elimination. The simulation study is performed through MATLAB/Simulink for a space vector pulse width modulation based Grid connected Inverter.
Keywords: pulse width modulation; random PWM; space vector PWM; voltage source PWM inverter; acoustic noise
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