Performance Improvement in Vector Controlled Induction Motor Drive by Using Hybrid Pwm
نویسندگان
چکیده
In this paper, hybrid pulse width modulation algorithm for vector controlled induction motor drives is used to reduce the steady state ripple in current. Also the newly developed Hybrid PWM technique does not use angle and sector information and hence it simplifies the control algorithm. The conventional Space vector pulse width modulation (CSVPWM) algorithm gives inferior performance at higher modulation indices. As the CSVPWM is a continuous PWM (CPWM), it gives more switching losses. Discontinuous PWM is used at the higher modulation indices. Hybrid PWM (HPWM) algorithm uses the SVPWM and discontinuous PWM (DPWM) algorithms. The proposed HPWM algorithm uses the concept of imaginary switching times which are derived from instantaneous phase voltages. Performance of vector controlled induction motor drive at all modulation indices is improved by using MATLAB /SIMULINK
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