What is the difference between commutation number and pulse number in?
A converter configuration can be defined by the basic commutation group and the number of such groups connected in series and/or parallel. This is true for uncontrolled rectifiers, controlled rectifiers or inverters.







simulate this circuit &ndash; Schematic created using CircuitLab

Commutation group

A commutation group is essentially a leg which may be comprised of a number of devices in series or parallel to block the voltage or handle the current

Commutation number

the number of parallel connected commutation groups 

Pulse number

Output pulse number is the number of pulses in the output voltage that occur during one ac input cycle, of frequency fs

Commutation cell

A commutation cell is the entire commutation block