Patent ID: 9634576
Date: 2017-04-25
CPC Classifications: H02M

Claim:
1. A power conversion system, comprising: at least one multi-level power converter; and a controller coupled to the at least one multi-level power converter, the controller comprising: a first common mode voltage (CMV) injection module for generating a first CMV signal for modifying at least one voltage command to achieve a first function in association with operation of the power conversion system; a second CMV injection module for generating a second CMV signal based at least in part on a local limit either for modifying the at least one voltage command or for further modifying the at least one modified voltage command to achieve a second function in association with operation of the power conversion system; and a summation unit to receive and combine the first CMV signal and the second CMV signal with the at least one voltage command to provide modified voltage command signals.