Direct Torque Control of Induction Motor with Matrix Converter

Abstract

The matrix converter (MC) with direct torque control (DTC) combination is efficient way to get better performance specifications in the industry. The MC and the DTC advantages are combined together. The reduction of complexity and cost of DC link in the DTC since it has no capacitors in the circuit. However, the controlling torque is a big problem it in DTC because of high ripple torque production which results in vibrations response in the operation of the iductuction motor as it has no PID to control the torque directly. To overcome this, a combination of MC with DTC is applied to reduce the fluctuation in the output torque and minimize the steady state error. This paper presents the simulation analysis of induction machine drives using Maltlab/Simulink toolbox R2012a. Design of DTC induction motor drive, MC with constant switching frequency, speed controller and stability investigation as well as controllability and observabilty with minimum final prediction (FPE) steady state error and loss functionality has been carried out precisely.

Keywords

• Induction Motor (IM)
• Direct torque control (DTC)
• Matrix converter (MC)
• Control drive
• Speed control