| 摘要 |
PURPOSE:To accurately control an output current by multiplying the differentiated signal of the output current set signal of an inverter by a coefficient of an interlocking reactor or the like, and modulating a pulse width modulation signal made of the sum of this signal and a system voltage correspondence signal. CONSTITUTION:An inverter current control system is composed in a system for controlling the output current I0 of a voltage type inverter 3 which injects an arbitrary current through an interlocking reactor 2 to a power system 1. The differentiated signal of its current set signal iOR is multiplied by a coefficient K1 equal to the inductance value L of the reactor 2, a pulse width modulation signal VIR made of the sum of this signal and a system voltage correspondence signal Vs is pulsewidth-modulated, and the switching element of the inverter 3 is controlled ON, OFF in response to the obtained pulse width modulation signal VQ. Thus, the output current I0 of the inverter 3 can be accurately controlled to a target value IOR, and stably operated. |
