Space Vector Pulse Width Modulation for Speed Control of Induction Motor

In this paper speed of induction motor is controlled By using three phase bridge inverter. In this paper the speed of an induction motor can be change by changing the input Voltage or frequency or both voltage and frequency. Variable voltage and variable frequency for induction motor Drives is obtained from a 3�• Voltage Source Inverter (VSI). Voltage and frequency of inverter can be easily controlled and applied by using PWM techniques, which is a very necessary main point in the application of induction motor drives. A number of PWM techniques are there to produce a variable voltage and variable frequency supply such as PWM, SPWM, SVPWM to name a few, among the above various strategies SVPWM is one of the most efficient and better techniques as it has better performance and output voltage is similar to sinusoidal. In SVPWM the modulation index in linear region will also be high when compared to other Modulation techniques, and DC link voltage use in space Vector PWM technique is 15% more as compared to Sinusoidal PWM.