Patent ID: 11163012

Abstract:
An energization evaluation test equipment for an input filter of a large capacity PWM converter by reducing the power supply capacity to the equipment under test is provided. The energization evaluation test is equivalent to an actual load test. An equipment under test has an input filter connected to an output terminal of an AC power source and a PWM converter connected to an output terminal of the input filter to convert an AC power source to a DC power source. The evaluation test equipment includes a PWM converter input filter and a PWM converter configured similarly to the PWM converter input filter and the PWM converter of the equipment under test, respectively, a direct current reactor connected to an output terminal of a PWM converter of the equipment under test, a PWM controller for controlling the PWM converter of the equipment under test and controlling the PWM converter of the energization evaluation test equipment, wherein, outputs of the PWM converter of the equipment under test and the PWM converter of the energization evaluation test equipment are connected in series via the direct current reactor, and the PWM controller is performed so that the output voltage of the PWM converter of the equipment under test becomes a desired value and the output current of the PWM converter of the energization evaluation test equipment becomes a desired value.