Title :
Stand-alone transformerless sinusoidal inverter for PV systems
Author :
Fiorello, Ronald M. ; Salameh, Z.M.
Author_Institution :
Powercube Corp., Billerica, MA, USA
Abstract :
The authors investigate the design and performance of a nonisolated inverter. The inverter is designed to be powered from a bipolar photovoltaic array series-parallel combination. The array is configured so that its output is compatible with the input of the inverter. The load circuit return is common with the input power return. The inverter control circuit utilizes direct feedback pulse-width-modulated (PWM) control. A signal with a triangular carrier wave is compared to a reference sinusoidal modulating wave to determine the switching instants. This technique is easily implemented using analog circuits. The control and power processor circuits consists of several subcircuits. These subcircuits are described
Keywords :
invertors; photovoltaic power systems; pulse width modulation; bipolar photovoltaic array series-parallel combination; direct feedback PWM control; load circuit return; stand-alone transformerless sinusoidal invertor; triangular carrier wave; Circuits; Frequency; MOSFETs; Photovoltaic systems; Process control; Pulse inverters; Pulse width modulation inverters; Solar energy; Solar power generation; Voltage control;
Conference_Titel :
Applied Power Electronics Conference and Exposition, 1991. APEC '91. Conference Proceedings, 1991., Sixth Annual
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-0024-6
DOI :
10.1109/APEC.1991.146219
