Micro-Scholarship, What it is, How can it help me.pdf
space vector PWM for 2 leg inverter
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 )
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.
![INTRODUCTION ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)