CSI vs VSI?
CSI vs VSI?
(OP)
Can anyone help me explain in laymans terms the difference between a current source and a voltage source drive. I know basically the difference(diode front end compared to scr-active front end) but find it hard to explain. Even if there is link to go to would be great.





RE: CSI vs VSI?
The inverter bridge is switched in a sequence to produce a stepped current waveform that is like the voltage waveform of a VVI drive. The output voltage waveform is like the output current waveform of a VVI drive. With an output voltage regulated CSI drive, the inverter is switched at the desired operating frequency and the voltage regulator receives a reference to produce the proper V/Hz. The error signal from the voltage regulator causes the DC current regulator to produce a current that results in the DC bus voltage needed for the required V/Hz.
RE: CSI vs VSI?
RE: CSI vs VSI?