నైరూప్య

Modelling And Simulation Of A Hysteresis Band Pulse Width Modulated Current Controller Applied To A Three Phase Voltage Source Inverter By Using Mat lab

B.Venkata Ranganadh, A. Mallikarjuna Prasad, Madichetty Sreedhar

In This Paper It has been designed a hysteresis band PWM (HBPWM) current controller for a three level voltage source inverter (VSI) .The HBPWM approach has been selected for the research, since it has the potential to provide an improved method of deriving non-linear models which is complementary to conventional techniques. To illustrate the validity of this approach, an indirect vector controlled induction motor (IVCIM) drive has been considered as its application. The induction motor (IM) is modelled using d-q transform called Park’s transformation as it adequately simulates the transient performance. Network acquires the features of an HBPWM controller. The simulation model of an IVCIM drive employing HBPWM current controller is developed in SIMULINK/MATLAB environment. The performance of the proposed method is compared with conventional PWM current control scheme. HBPWM current controller is more efficient in terms of fault tolerance, switching loss and total harmonic distortion thus improving the performance of the drive.