Abstract
Compared with half bridge MMC, the hybrid MMC based on full bridge sub-modules (FBSM) and half bridge sub-modules (HBSM) has more control freedoms. It has been reported that the hybrid MMC can regulate the cell capacitor voltages independent of the DC-link voltage. Thus it is able to ride through pole-to-pole DC fault without tripping IGBTs. But few literatures studied the fault ride through control of pole-to-ground (PTG) DC fault which happens more commonly and frequently. To ride through PTG DC fault, this paper presents a four-channel control for symmetrical monopole hybrid MMC. Firstly, system dynamics of hybrid MMC under PTG DC fault is analysed. Based on the analysis, a four-channel control scheme is proposed for hybrid MMC. This controller is mainly composed of a DC current control loop, an aC current control loop and outer control loops. Fault ride through capability under permanent and temporary PTG DC faults is verified by simulations using PSCaD/EMTDC.
| Original language | English |
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| Title of host publication | 2017 IEEE Power and Energy Society General Meeting, PESGM 2017 |
| Pages | 1-5 |
| Number of pages | 5 |
| Volume | 2018-January |
| ISBN (Electronic) | 9781538622124 |
| DOIs | |
| Publication status | Published - 29 Jan 2018 |
| Event | 2017 IEEE Power and Energy Society General Meeting, PESGM 2017 - Chicago, United States Duration: 16 Jul 2017 → 20 Jul 2017 |
Conference
| Conference | 2017 IEEE Power and Energy Society General Meeting, PESGM 2017 |
|---|---|
| Country/Territory | United States |
| City | Chicago |
| Period | 16/07/17 → 20/07/17 |
Keywords
- fault ride through
- high voltage dc transmission (HVDC)
- hybrid MMC
- pole-to-ground DC fault
- circuit faults
- voltage control
- modulation