Abstract
This paper deals with a reduced switch multi-level inverter for the solar photovoltaic system-based 127-level multi-level inverter. The proposed technique uses the minimum number of switches to achieve the maximum steps in staircase AC output voltage when compared to the flying capacitor multi-level inverter, cascaded type multilevel inverter and diode clamped multi-level inverter. The use of a minimum number of switches decreases the cost of the system. To eliminate the switching losses, in this topology a square wave switch is used instead of pulse width modulation. Thereby the total harmonic distortion (THD) and harmonics have been reduced in the pulsating AC output voltage waveform. The performance of 127-level MLI is compared with 15 level, 31-level and 63-level multilevel inverters. The outcomes of the solar photovoltaic system-based 127-level multi-level inverter have been simulated in a MATLAB R2009b environment.
Highlights
In the current generation, the demand for electricity is growing day by day
The solar PV output voltage through the DC-DC converter is given to 10-IGBT switches S1 to S10 to achieve the desired 127 levels
The proposed topology have been compared with the neutral point clamped (NPC) multilevel inverter (MLI), cascaded H bridge (CHB) MLI, flying capacitor (FC) MLI, switched capacitor (SC) MLI with the proposed topology with respect to the main switches, main diodes, clamping diodes, DC sources, flying capacitors, gate driver circuits, variety of DC sources, maximum output voltage, and number of levels
Summary
The demand for electricity is growing day by day. Nowadays, most electricity is generated through conventional energy sources (thermal, nuclear, etc.), which are not environmentally friendly. 2-level inverters face high switching voltage stress, less efficiency and low power quality, Clean Technol. A configuration is planned which has a lower number of IGBT switches for SPV voltage source based 127-level MLI. The proposed technique has ten IGBT semiconductor switches, which is a fewer amount than in the diode clamped, cascaded, and flying capacitor type MLI. The proposed configuration of MLI uses SPV with DC-DC converters to turn as six dissimilar DC sources which produce 127-level at AC output voltage which, in turn, decreases harmonics and advances the power quality. This proposed configuration of 127-level is used in off-grid applications. The performance of the proposed technique is demonstrated through simulation, using the MATLAB R2009a environment
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
