| 摘要 |
PURPOSE: To stably control side flow by suppressing the resonance between the reactor content of parallel wiring and a filter capacitor when operating an inverter system in parallel. CONSTITUTION: A parallel operation control device of an inverter system is provided with a means for calculating an inverter output current setting value, a means for detecting side flows IB1 and IB2 flowing to an inverter system, control amplifiers 20a and 20b for amplifying the side flow detection value, adders 19a and 19b for adding the inverter output current setting value and the output of the control amplifiers 20a and 20b, and a minor loop for controlling the inverter output current with the adder output as the inverter output current command value, thus suppressing the resonance between a parallel wiring reactor and a filter capacitor, achieving a stable side-flow control, and at the same time setting the gains of control amplifiers 12a, 12b, 14a, and 14b to large values for improved output voltage transition characteristics and side flow control characteristics. |
