2-Leg Inverter Space Vector Modulation
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2-Leg Inverter Space Vector Modulation
- 1. SPACE VECTOR MODULATION FOR TWO LEG INVERTERS PRESENTED By SUDHAKAR AKKI Reg.No:1610910044 UNDER THE GUIDANCE OF Mr. NALINKANT MOHANTY ASST.PROF( Sr.G )
- 5. Block diagram of the project
- 8. SPACE VECTOR PWM FOR 2-LEG INVERTER
- 10. Magnitude, angle& sector representation
- 11. Alpha Beta Determine time duration T 1 , T 2 , T 0
- 13. Determine the switching time of each transistor (S 1 to S4)
- 14. Switching times of each sector
- 15. Simulation circuit of 2 leg inverter by SVM
- 16. Sectors for 2-leg inverter Angle Sectors
- 17. Sectors for 3-leg inverter Switching time duration
- 18. Switching time duration for two leg inverter
- 19. Connotative Modulation Functions for 2leg
- 20. Connotative Modulation Functions for 3 leg Phase voltages of 3-leg inverters
- 21. Line Voltages
- 22. Switching time duration for two leg inverter with un-equal vector magnitudes…. FFT analysis
- 25. THANK YOU
Notas do Editor
- SVM treats the inverter as a single unit. Can be represented in a two dimensional space. There are 4 possible states for the inverter.
- 4 active vectors occupy 4 vertices of the (Parallelogram)Rhombus If phase voltages are sinusoidal, the locus of Vs is a circular
- If the space vector lies in b/w any two active vectors, Then these 2 active vectors and zero vectors are used to synthesize the Vs Vs* is making an angle 0<teta<90 Volt-sec balance condition gives (incremental flux)=Vs*Tc=V1T1+V2T2+VzTz
- Can be distributed in the beginning and the end of Tc at a time, only one switch should be switched.
- Switching losses are increased Amplitude of higher order harmonics are increased The fundamental component of output voltage is less PWM method is unable to make full use of the inverters supply voltage and asymmetrical nature of switching characteristics , produce the high harmonic distortion in the supply.