CONTROLLING METHOD OF SINGLE CONTROL LOOP VOLTAGE CONTROLLER IN THREE-PHASE PULSE WIDTH MODULATION INVERTER

摘要

PURPOSE: A controlling method of a single control loop voltage controller in a three-phase PWM(Pulse Width Modulation) inverter is provided to control a total system by using the single control loop voltage controller having only a voltage controller. CONSTITUTION: The first multiplying process is performed to multiply a system function by an error signal(26) due to a difference between a control signal(20) and a feedback signal(22). The second multiplying process is performed to multiply the system function by the first feed forward signal. The third multiplying process is performed to multiply the system function by the second feed forward signal(30). A differentiation process is performed to differentiate a disturbance signal. An adding process is performed to add values obtained from the first to the third multiplying processes and the differentiation process. A control value is obtained by multiplying the added value by a predetermined value.