| 摘要 |
PURPOSE: To provide an inverter parallel operation device which can perform stable control against a transient deviation generated in the phase and the amplitude of an output voltage. CONSTITUTION: A load current corresponding value and an inverter output current corresponding value are inputted to cross current detecting circuits 101, 201 to output a cross current corresponding value corresponding to a cross current flowing between inverters 10, 20, and an effective power deviation and a reactive power deviation are outputted from the cross current corresponding value and an inverter output voltage corresponding value, and output voltage control circuits 104, 204 for outputting a voltage control value from an effective power deviation and output phase control circuits 105, 205 for outputting a phase control value from the reactive power deviation are provided. An instantaneous value control for equivalently making the internal impedance of each inverter zero can be performed against a transient deviation generated in the phase and the amplitude of the output voltage. |
