SLIP LIMIT CONTROL SYSTEM FOR INVERTER DEVICE

摘要

PURPOSE:To obtain an inverter device having stable and high response without transient current slip out even at the severe speed rapid variation time by using a digital control type inverter using a microcomputer. CONSTITUTION:Current and voltage obtained by a current/voltage detector 17 are converted by an A/D converter 18 from an analog value to digital value. A converter firing angle command is obtained by a converter controller 21 by converter voltage command by a CPU19 for performing a software processing and the calculation of the softwared from the converter voltage feedback by the converter 18. A speed command is obtained by a speed command input and a speed feedback by the speed input interface 22. A reference voltage and frequency for controlling a PWM by a signal form the interface 22 is formed by a reference sinusoidal wave generator.