DefinePK

Abstract

This paper offers applicable method to control the AC three-phase induction motor squirrel-cage by using the microprocessor TMS320F (manufactured by Texas Instrument, USA). This new version of Digital Signal Processing (DSP) controllers permits project of smart controllers for AC and DC electric motors which can yield improved task, a smaller amount system device, lesser system price and bigger effectiveness. Most of the controls methods on the inverter-fed AC induction motor derive with different schemes are classified into two main methods: scalar and vector methods. The V/f method is considered as scalar method while the Direct Torque Control (DTC) and Field Oriented Control (FOC) methods are presented under the vector methods. The different mentioned methods are also developed to subdivide into more specified methods such as direct and indirect FOC, speed sensor and speed sensor less FOC. In addition, DTC contains two techniques: Direct Self–Control (DSC) and Space Vector Modulation (SVC). All these methods share in their work mainly by using the software algorithm full speed verification of F28335 code which is created by using directly microprocessor such as TMS320F indirect by microcontroller (micro-computer as example). This present study introduces the design and implementation of high performance microprocessor TMS320F controller for operating three-phase induction motor via DC to AC inverter-fed. The inverter used is consisted of three arms- two levels of IGBs type G4PC50UD. The Pulse Modulation Unit is fabricated in the laboratory using eight ICs type SN74LS14N, 14 pins and six ICs type A3120, eight pins. The tests have been conducted in University of Diyala, College of Engineering, AC machine Laboratory which complemented with the expected results.