发明名称 |
DC-link voltage balancing system and method for multilevel converters |
摘要 |
A control system (50) for a multilevel converter (40) includes a differential mode current regulator (84), a neutral point (NP) controller (86) and a PWM controller (88) for generating switching pulses for the multilevel converter (40). The differential mode current regulator (84) generates reference voltage command signals based on a difference between reference current command signals and actual current command signals, and the NP controller (86) determines a modified neutral point current signal in response to a DC link voltage unbalance. The NP controller (86) utilizes the modified neutral point current signal to generate a common mode reference voltage signal. The switching pulses are generated by the PWM controller (88) based on the reference voltage command signals and the common mode reference voltage signal. |
申请公布号 |
EP2437389(A3) |
申请公布日期 |
2015.05.27 |
申请号 |
EP20110181455 |
申请日期 |
2011.09.15 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
SHEN, JIE;SCHROEDER, STEFAN;ROESNER, ROBERT |
分类号 |
H02M7/487 |
主分类号 |
H02M7/487 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|