系統連系形太陽光発電システムの単相PWMの一方式

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  • A Method of a Single Phase PWM for a Utility-connected Power Supply in Photovoltaic Power Generation Systems
  • ケイトウレンケイガタ タイヨウコウ ハツデン システム ノ タンソウ PWM

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We propose a method of a sigle phase PWM for a utility-connected power supply in photovoltaic power generation systems. In this paper, the PWM is derived from camparing levels of signal waves with ones of carrier waves which have bipolar swing different from unipolar one in the conventional PWM, and shifting phase a little at exery on-off time. We can expect that array voltage needed is reduced by about 15% and harmonics content contained in output voltage is reduced by about 24% in this PWM in comparison with the conventional with equal output voltage.

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