有効・無効電力指令により動作する家庭向け太陽光発電用インバータの新制御方法

概要

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Installation of the photovoltaic generation on the roof of houses is increasing rapidly every year in Japan. Large amount of photovoltaic generation will induce reverse power flows and large voltage deviation in distribution networks. The conventional inverter control of photovoltaic generation is a simple current method with constant unity power factor. Therefore, the control cannot change its power factor and then the contribution is not expected on regulation of voltage in distribution networks. We propose a new flexible control for a photovoltaic generation with active power and reactive power controls. The new controls can change power factor. Also we propose a control for smoothing power output of photovoltaic generation as an application of the new flexible control. The paper describes details of the new inverter control method and also simulation results.
2011-10-30