| 摘要 |
PROBLEM TO BE SOLVED: To provide an inverter controller, inverter circuit and uninterruptive power supply, capable of achieving appropriate setting of a gain for feedback and stable control even when a command value changes from moment to moment.SOLUTION: The inverter controller, having a bridge circuit comprised of a conductor switching element and PWM controlling an inverter circuit for inverting DC power into AC power of a predetermined frequency, includes: a reference signal generation part for generating a reference PWM command value Vr comprised of a sinewave of a frequency f to be output from the inverter circuit; a feedback control part for correcting the reference PWM command value Vr, taking a percentage ΔV/Vr relative to the PWM command value Vr of a difference ΔV between the reference PWM command value Vr and an AC voltage Vm output from the inverter circuit as a control deviation; and an output part for outputting a PWM command value Vo corrected by the feedback control part to the inverter circuit.SELECTED DRAWING: Figure 3 |
