A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count.
Switched-capacitor (SC)-based multilevel inverters (MLIs) have gained great attention in renewable energy applications owing to their self-balancing of capacitor voltage and ac voltage boosting. Using SCMLI, single-stage dc–ac power conversion is made possible without needing a front-end dc–dc boost...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Published: |
John Wiley and Sons Ltd.
2023
|
| Subjects: |
| _version_ | 1811132153570787328 |
|---|---|
| author | Kakar, Saifullah Md. Ayob, Shahrin Arif, M. Saad Lee, Sze Sing Mohamad Nordin, Nor Julia Ayop, Razman |
| author_facet | Kakar, Saifullah Md. Ayob, Shahrin Arif, M. Saad Lee, Sze Sing Mohamad Nordin, Nor Julia Ayop, Razman |
| author_sort | Kakar, Saifullah |
| collection | ePrints |
| description | Switched-capacitor (SC)-based multilevel inverters (MLIs) have gained great attention in renewable energy applications owing to their self-balancing of capacitor voltage and ac voltage boosting. Using SCMLI, single-stage dc–ac power conversion is made possible without needing a front-end dc–dc boost converter that improves overall system efficiency, reliability, and power density. However, in most existing SCMLIs, the discharging duration of the rear-end SCs is much longer than its charging duration, especially when a high number of SC units are adopted. While a high number of level generation is expected to produce a better resolution ac voltage, a significant increase in capacitor's voltage ripple, in contrast, distorts the ac voltage despite using large capacitors. Recently, the switched-capacitor modular t-type inverter (SC-MTI) topology resolved the problem by extending the charging period of all SCs to at least half of the fundamental switching period. However, the high switch count of SC-MTI introduces a trade-off in terms of efficiency and cost. In this paper, a new SCMLI topology that retains the good traits of SC-MTI with switch count reduction is proposed. The merits and feasibility of the proposed SCMLI are verified through simulation and further validated through experimental results for seven-level considering various operating conditions. |
| first_indexed | 2024-09-23T23:58:17Z |
| format | Article |
| id | utm.eprints-105536 |
| institution | Universiti Teknologi Malaysia - ePrints |
| last_indexed | 2024-09-23T23:58:17Z |
| publishDate | 2023 |
| publisher | John Wiley and Sons Ltd. |
| record_format | dspace |
| spelling | utm.eprints-1055362024-05-05T06:25:46Z http://eprints.utm.my/105536/ A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. Kakar, Saifullah Md. Ayob, Shahrin Arif, M. Saad Lee, Sze Sing Mohamad Nordin, Nor Julia Ayop, Razman TK Electrical engineering. Electronics Nuclear engineering Switched-capacitor (SC)-based multilevel inverters (MLIs) have gained great attention in renewable energy applications owing to their self-balancing of capacitor voltage and ac voltage boosting. Using SCMLI, single-stage dc–ac power conversion is made possible without needing a front-end dc–dc boost converter that improves overall system efficiency, reliability, and power density. However, in most existing SCMLIs, the discharging duration of the rear-end SCs is much longer than its charging duration, especially when a high number of SC units are adopted. While a high number of level generation is expected to produce a better resolution ac voltage, a significant increase in capacitor's voltage ripple, in contrast, distorts the ac voltage despite using large capacitors. Recently, the switched-capacitor modular t-type inverter (SC-MTI) topology resolved the problem by extending the charging period of all SCs to at least half of the fundamental switching period. However, the high switch count of SC-MTI introduces a trade-off in terms of efficiency and cost. In this paper, a new SCMLI topology that retains the good traits of SC-MTI with switch count reduction is proposed. The merits and feasibility of the proposed SCMLI are verified through simulation and further validated through experimental results for seven-level considering various operating conditions. John Wiley and Sons Ltd. 2023-04 Article PeerReviewed Kakar, Saifullah and Md. Ayob, Shahrin and Arif, M. Saad and Lee, Sze Sing and Mohamad Nordin, Nor Julia and Ayop, Razman (2023) A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. International Journal of Circuit Theory and Applications, 51 (4). pp. 1841-1857. ISSN 0098-9886 http://dx.doi.org/10.1002/cta.3505 DOI: 10.1002/cta.3505 |
| spellingShingle | TK Electrical engineering. Electronics Nuclear engineering Kakar, Saifullah Md. Ayob, Shahrin Arif, M. Saad Lee, Sze Sing Mohamad Nordin, Nor Julia Ayop, Razman A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. |
| title | A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. |
| title_full | A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. |
| title_fullStr | A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. |
| title_full_unstemmed | A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. |
| title_short | A generalized switched-capacitor-based modular T-type inverter topology with reduced switch count. |
| title_sort | generalized switched capacitor based modular t type inverter topology with reduced switch count |
| topic | TK Electrical engineering. Electronics Nuclear engineering |
| work_keys_str_mv | AT kakarsaifullah ageneralizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT mdayobshahrin ageneralizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT arifmsaad ageneralizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT leeszesing ageneralizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT mohamadnordinnorjulia ageneralizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT ayoprazman ageneralizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT kakarsaifullah generalizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT mdayobshahrin generalizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT arifmsaad generalizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT leeszesing generalizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT mohamadnordinnorjulia generalizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount AT ayoprazman generalizedswitchedcapacitorbasedmodularttypeinvertertopologywithreducedswitchcount |