INVERTER TYPE C MOTOR CONTROLLER

Brand	Owner	Address	Description
U-TRAC	T. B. WOOD'S SONS COMPANY	NORTH FIFTH AVENUE CHAMBERSBURG PA	INVERTER TYPE A.C. MOTOR CONTROLLER;UTRACK;U TRACK;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A circuit for protecting against controller failure wherein the controller provides control signals for controlling a DC to AC inverter fed by a DC bus and driving a permanent magnet motor, the circuit comprising a first circuit for monitoring the DC bus voltage and, in the event the DC bus voltage exceeds a first threshold due to a counter EMF generated by the motor, for producing a signal to the controller to provide a switch state to the inverter whereby the counter EMF is dissipated substantially in a motor circuit resistance of the permanent magnet motor as a result of a short circuit condition provided by the switch state of the inverter, thereby preventing the DC bus voltage of the inverter from exceeding the first threshold and causing the permanent magnet motor speed to be reduced.