• Jyoti Mudakappagol
• Sharmila R. S
• Anguraja R

Theoretical Performance of a bearer based pulsewidth adjustment (SPWM) technique can be enhanced by the consideration of a zero sequence voltage in the regulation reference signal. This paper proposes another PWM procedure for a three-level neutral point- clamped (NPC) converter, which depends on a zero-sequence voltage infusion. By consideration of the zero-sequence voltage, the sinusoidal-balance reference is altered to 1) do the voltage-adjusting assignment of the - link capacitors, with no extra control exertion, 2) decrease the exchanging losses , and 3) diminish the low frequency voltage motions of the unbiased point. Compared with the existing CB-PWM strategies, the proposed strategy offers 1) capability to balance the capacitor voltages and reduce the NP voltage oscillations and 2) reduced switching losses. Performance of the proposed CB-PWM strategy for a three-level NPC converter based on time-domain simulation studies in the /SIMULINK environment is evaluated and also experimentally verified.

SPWM, NPC-neutral point clamped, carrier based PWM technique, zero sequence voltage, Renewable Energy (RE), Hybrid energy storage system (HSS), Hybrid power system (HPS).

"Study and simulation of four leg three level NPC inverter for power quality improvement using second order sliding mode", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 6, page no.365-369, June-2018, Available :http://www.jetir.org/papers/JETIR1806745.pdf

"Study and simulation of four leg three level NPC inverter for power quality improvement using second order sliding mode", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 6, page no. pp365-369, June-2018, Available at : http://www.jetir.org/papers/JETIR1806745.pdf