Power Electronics / Power Management


Turnkey AC motor control unit designed to lower costs and speed development

3 July 2002 Power Electronics / Power Management

Motorola's Semiconductor Products Sector has developed a pre-programmed, variable speed, three phase AC motor control unit. The MC3PHAC is designed to provide a comprehensive motor control solution enabling sophisticated motor control without a high investment in development and software expertise. It is targetted at industrial, automotive and home applications such as low horsepower HVAC motors, home washing machines and dishwashers, commercial appliances, process controls, pumps and fans.

Several trends are pushing manufacturers to incorporate advanced motor control technologies into their products, says Motorola. Consumers and regulators are demanding increased energy efficiency pushing OEMs to reduce power consumption of devices. The home appliance industry wants to reduce the complexity of components by incorporating semiconductors instead of traditional analog relay circuitry. Using microcontrollers to control the electronic or mechanical components that control the motor produces many benefits.

The CAPAC device is adaptable and configurable to its environment. It also contains all of the active functions required to implement the control portion of an open loop, three phase AC motor. It includes: Volts-per-Hertz speed control, DSP filtering, and dynamic bus ripple cancellation to create a quiet, efficient motor with precise controls; Internet-enabled system allows motors to be attached to a PC and controlled remotely; no software required for operation.

Arrow Altech Distribution, 011 923 9600

Avnet Kopp, 011 809 6100

EBV-Electrolink, 021 421 5350



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