- #1
tim9000
- 867
- 17
Hi,
Could I please get some conformation and clarification:
So the more phases an inverter has, the less ripple will be on the DC bus, and the higher the switching frequency the inverter is operating at, the closer the approximation is to a sine wave. These are the advantages?
But what are the harmonic advantages? Do they come from a higher switching frequency or more phases? or both?
I'm betting the switching freq. (?) But I've heard that having more phases in an inverter means there is less harmonics seen by the source, why?
Also, when considering a motor fed by more phases then 3, would there be any benefit to using more phases? (like a better MMF approximation) or what would the implications be? (such as to the life of the motor)
Thanks
Could I please get some conformation and clarification:
So the more phases an inverter has, the less ripple will be on the DC bus, and the higher the switching frequency the inverter is operating at, the closer the approximation is to a sine wave. These are the advantages?
But what are the harmonic advantages? Do they come from a higher switching frequency or more phases? or both?
I'm betting the switching freq. (?) But I've heard that having more phases in an inverter means there is less harmonics seen by the source, why?
Also, when considering a motor fed by more phases then 3, would there be any benefit to using more phases? (like a better MMF approximation) or what would the implications be? (such as to the life of the motor)
Thanks