Power converter and power conditioner

摘要: An aspect of the invention provides a power converter that enhances conversion efficiency from DC to an AC power. A first chopper circuit (5) chops voltage photovoltaic panel (1) at system frequency produce square-wave string whose level changes onto positive side, second (6) double negative side and adds third alternately in sine-wave manner on sides, (7) performs charge discharge by chopping fixed timing according or difference between voltage, PWM control is performed outputs such corrected, thereby producing continuously sides. Further, spike noise output suppressed.