Sites:
Home > Technical Library > Motion and Controls > Motor Controls and Drives > Controlling 3-Phase AC Induction Motors Using the PIC18F4431

Controlling 3-Phase AC Induction Motors Using the PIC18F4431

From Microchip Technology, Inc.

Before getting into actual control applications, we should understand what distinguishes the PIC18F4431 from other Microchip devices used for motor control. The core is a set of unique peripherals that simplify external hardware requirements and also enable higher levels of motor control capability than the PIC18F452 or PIC16F7X7. Practically speaking, control of a 3-phase AC induction motor requires pulse-width modulated control of the six switches of a 3-phase inverter bridge connected to the motor's stator windings (Figure 1). The six switches form 3 pairs of "half-bridges", which can be used to connect the leg of a winding to the positive or the negative high-voltage DC bus.
Read the Whole Article
Products & Services
Stepper Motor Drives
Stepper motor drives power unipolar and bipolar stepper motors in full step, half step, and microstep motion control applications.
Product Announcements
Groschopp, Inc. - GROSCHOPP UNIQUE INVERTER DUTY AC MOTORS
"Groschopp has taken a typical AC motor made by hundreds of motor manufacturers and perfected it" says Sales Manager, Ed Tullar. Groschopp's AC motors are inverter duty classified. (read more)
Bodine Electric Company - Over 100 Metric Gearmotors Available Online
Our selection of metric AC induction and permanent magnet DC products feature special motor windings for many international markets and 50Hz applications. These gearmotors and motors also feature... (read more)
Topics of Interest

9.1 Introduction The direct-current (dc) and synchronous motors we have discussed thus far have one thing in common: both are the doubly-fed type. These motors have direct current in their field...

AC and DC motors are the two major types in use today that are related to the industrial and HVAC applications. These motors provide the speed, torque, and horsepower necessary to operate the...

AN1078 Sensorless Field Oriented Control of PMSM Motors This application note focuses on the PMSM-based sen- Author: Jorge Zambada sorless FOC control of appliances because this control Microchip...

OVERVIEW Alternating current (AC) machines are motors that convert AC electric energy to mechanical energy, and generators that convert mechanical energy to AC electric energy. The two major classes...

ALTERNATING-CURRENT MOTORS 146. General construction of polyphase induction motors. Polyphase induction motors have two windings, one on the stationary part of the machine, or stator, and one...