Three phase asynchronous electric motor controller for e.g. linen washing machine, has microcontrollers for controlling power units through optotriac, and assuring electronic control of three phase asynchronous motor

摘要

The controller has microcontrollers (4, 5) for controlling power units (2a, 2b) through an optotriac, and assuring electronic control of a three phase asynchronous electric motor (1). An opto-coupler isolates communication between the microcontroller (4) referenced with neutral potential and the microcontroller (5) referenced with zero potential of rectifying and filtering block (7). The block feeds the motor through an inverter (8).