| 摘要 |
PURPOSE:To prevent overcurrents in case of starting by controlling the inverter so that an inclination is increased in the first half in case of the rise of starting and decreased in the latter half in the output voltage of the inverter. CONSTITUTION:Control voltage Ev from a sequence control circuit 18 is controlled by a micro-computer sequencer 18 so that the inclination dV/dt of the rise of output voltage Vo is increased in the first half just after starting the inverter and made easy during a period when output voltage Vo reaches stationary operation after it reaches predetermined value. According to said control method, inrush currents in case of starting can be removed because the output voltage of the inverter slowly increases from zero when starting the inverter. |
