Abstract
This paper presents an accurate steady-state initialization method for electromagnetic transient (EMT) models of modular multilevel converters (MMCs). The proposed method uses steady-state arm voltages and currents to initialize internal electrical variables and control systems of the converter, including capacitor voltage and gating signals of each sub-module. In addition to typical voltage source converter upper level control, MMC specific controls are also considered, including circulating current control, dc ripple control, and capacitor voltage balancing algorithm. EMT simulations on 101-level and 401-level MMC-HVDC systems confirm the accuracy of the proposed method.
| Original language | English |
|---|---|
| Article number | 8477141 |
| Pages (from-to) | 290-300 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Power Delivery |
| Volume | 34 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Feb 2019 |
Keywords
- High-voltage direct current
- initialization
- modular multilevel converter
- simulation
- steady-state
ASJC Scopus subject areas
- Energy Engineering and Power Technology
- Electrical and Electronic Engineering