A Generalized Cross-Connected Submodule Structure for Hybrid Multilevel Converters
| Autor: | Mahendra B. Ghat, Anshuman Shukla, Ebin Cherian Mathew |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Engineering
business.industry 020209 energy 020208 electrical & electronic engineering Direct current Fault tolerance Topology (electrical circuits) 02 engineering and technology Modular design Converters Network topology Industrial and Manufacturing Engineering law.invention Capacitor Control and Systems Engineering Modulation law 0202 electrical engineering electronic engineering information engineering Electronic engineering Electrical and Electronic Engineering business |
| Zdroj: | IEEE Transactions on Industry Applications. 52:3159-3170 |
| ISSN: | 1939-9367 0093-9994 |
| DOI: | 10.1109/tia.2016.2535117 |
| Popis: | The fault-tolerant multilevel converters are gaining increased interests for high-voltage direct current (HVDC) applications due to their ability to suppress the fault current during dc-side faults. However, most of these topologies use full-bridge submodules (FBSMs) resulting in the requirement of a large number of semiconductor switches. In this paper, a new generalized cross-connected SM (GX-SM) structure is presented, which requires lesser number of switching devices and provides the same functionality as the FBSM. A comparison of the switches required in the different converter topologies using FBSMs and GX-SMs is performed. The performance evaluation of two of the dc-side fault-tolerant converter topologies, namely alternate arm modular multilevel converter (AAMMC) and hybrid cascaded modular multilevel converter (HCMC) with the GX-SM, is performed using simulation studies done in PSCAD/EMTDC. The modulation and control schemes for these GX-SMs-based converters are presented. A new mixed-SM configuration of AAMMC is proposed which utilizes an optimal combination of GX-SMs and half-bridge SMs. The study results demonstrate the effectiveness of the proposed GX-SM structure, and satisfactory responses of the GX-SMs-based AAMMC and HCMC systems controlled using the presented modulation and control strategies under various system conditions. |
| Databáze: | OpenAIRE |
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