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| Content Provider | IET Digital Library |
|---|---|
| Author | Ronanki, Deepak Williamson, Sheldon S. |
| Abstract | Impedance characteristics of the floating capacitor in the submodule (SM) of a modular multilevel converter (MMC) change due to its chemical and aging characteristics. This can result in a rise of voltage ripple across SM capacitors, uneven power distribution among the SMs and could also interrupt the operation with prolonged use of degraded capacitors. Existing balancing approaches are presented for the MMC with equal SM capacitance and ignored the effect of capacitor degradation as well as parameter mismatch. Hence, a closed-loop control scheme that incorporates the effect of capacitor degradation is much necessitated. This study aims to overcome this gap by proposing a new power balancing control algorithm for SM capacitors, which effectively controls and evenly distributes the power among SMs. The efficacy of the proposed strategy is substantiated through PLECS simulations and OPAL-RT/OP4510 controller-based experiments on a single-phase MMC laboratory prototype. |
| Starting Page | 3032 |
| Ending Page | 3043 |
| Page Count | 12 |
| ISSN | 17554535 |
| Volume Number | 13 |
| e-ISSN | 17554543 |
| Issue Number | Issue 14, Nov (2020) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/13/14 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2020.0261 |
| Journal | IET Power Electronics |
| Publisher Date | 2020-06-11 |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Aging Characteristic Balancing Approach Capacitor Capacitor Degradation Closed Loop System Closed-loop Control Scheme Control of Electric Power System Current Control Degraded Capacitor Electric Current Control Equal SM Capacitance Floating Capacitor Impedance Characteristic MMC Modular Multilevel Converter Modular Multilevel Converter Change Other Power Apparatus And Electric Machine Power Balancing Control Algorithm Power Capacitor Power Converter Power Electronics Power Supplies to Apparatus Power Supply PWM Power Converter SM Capacitor Submodule Power Balancing Control Supervisory Circuit Uneven Power Distribution Voltage Control |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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