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Why Common mode voltage is significant in Inverters

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Thread Starter

gurramjanu

Joined Jun 29, 2016
12
Dear all,

What is common mode voltage in a H bridge inverter ? from sources I understand that Vcm=(Vao+Vbo+Vco)/3 but what is its physical significance ... especially in Transformerless inverter.
How this common mode voltage will be made constant ..
How or why it will not be constant

FYI:I am working on Transformerelss inverters for grid connected PV systems
Thanks
Janardhan
 
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