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- Title
储能型MMC⁃HDT的无源控制及模式切换 控制策略.
- Authors
杨天翔; 程志江; 杨涵棣; 田峰
- Abstract
Aiming at the demand of intelligent coal mine and exit problem of underground coal mine power network, an energy storage hybrid distribution transformer based on modular multilevel converter (MMC-HDT) was proposed. Firstly, the proposed energy storage MMC-HDT was modeled and four operation modes were given considering grid fault and state of charge (SOC) . Secondly, the passivity-based controller was designed according to the port controlled Hamiltonian with dispersion (PCHD) model on the AC side of MMC-HDT. Finally, the switching control strategy of four operation modes was designed. The experimental results show that the proposed control strategy in energy storage MMC-HDT can further reduce the steady-state total harmonic distortion (THD) rate of feeder current and effectively limit the unrestricted sudden increase of feeder current in case of voltage fault. In any grid voltage fault state, the load voltage can be maintained at the rated value, the function of uninterrupted power supply can be realized, and the reliability of the distribution system can be improved.
- Subjects
MINES &; mineral resources; POWER resources; COAL mining; PASSIVITY-based control; RELIABILITY in engineering; ENERGY storage; CASCADE converters
- Publication
Electric Drive, 2023, Vol 53, Issue 8, p19
- ISSN
1001-2095
- Publication type
Article
- DOI
10.19457/j.1001-2095.dqcd24222