volume 117, issue 5, P631-636 1997
DOI: 10.1541/ieejias.117.631
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Abstract: We propose a method of a single phase PWM for an independent power supply in photovoltaic power generation systems. This new PWM is derived from comparing levels of signal waves with ones of carrier waves which have bipolar swing different from unipolar one in the conventional PWM. In this PWM, We can use a battery with lower voltage in combination with the photovoltaic power generation ; fundamental level of output voltage is raised by about 11%, though poor in quality of waveforms.

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