Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters
When single-phase three-level neutral-point-clamped (NPC) converters operate, there are two main control objectives that need to be met for correct operation. First, the ac source current must be controlled to be sinusoidal. Second, the dc capacitor voltages must be balanced. In original model predi...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/24/8840 |
| _version_ | 1827700352749666304 |
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| author | Eun-Su Jun Minh Hoang Nguyen Sangshin Kwak |
| author_facet | Eun-Su Jun Minh Hoang Nguyen Sangshin Kwak |
| author_sort | Eun-Su Jun |
| collection | DOAJ |
| description | When single-phase three-level neutral-point-clamped (NPC) converters operate, there are two main control objectives that need to be met for correct operation. First, the ac source current must be controlled to be sinusoidal. Second, the dc capacitor voltages must be balanced. In original model predictive control (MPC) methods for NPC converters, an optimization process involving an empirical weighting factor design is required to meet both of these objectives simultaneously. This study proposes an MPC approach developed for single-phase three-level NPC converters to meet these objectives using a single reference voltage consisting of a difference-mode term and a common-mode term in each phase. The difference-mode term and the common-mode term are responsible for sinusoidal ac source current synthesis and dc capacitor voltage balancing, respectively. Then, a single cost function compares the adjusted reference voltage with possible voltage candidates to select an optimal switching state, resulting in the smallest cost function value. Different from the conventional MPC method, the proposed approach avoids the selection of weighting factors and the attendance of various control objectives. Thanks to the deterministic approach, the proposed MPC method is straightforward to implement and maintain fast transient performance while guaranteeing the control objectives. Finally, the effectiveness and feasibility of the proposed approach for single-phase three-level NPC are verified through comprehensive experimental results. |
| first_indexed | 2024-03-10T14:11:02Z |
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| id | doaj.art-b4e5cc26cad448bc93a73dbe43d89171 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T14:11:02Z |
| publishDate | 2020-12-01 |
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| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-b4e5cc26cad448bc93a73dbe43d891712023-11-21T00:12:44ZengMDPI AGApplied Sciences2076-34172020-12-011024884010.3390/app10248840Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC ConvertersEun-Su Jun0Minh Hoang Nguyen1Sangshin Kwak2School of Electrical and Electronics Engineering, Chung-ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-ang University, Seoul 06974, KoreaSchool of Electrical and Electronics Engineering, Chung-ang University, Seoul 06974, KoreaWhen single-phase three-level neutral-point-clamped (NPC) converters operate, there are two main control objectives that need to be met for correct operation. First, the ac source current must be controlled to be sinusoidal. Second, the dc capacitor voltages must be balanced. In original model predictive control (MPC) methods for NPC converters, an optimization process involving an empirical weighting factor design is required to meet both of these objectives simultaneously. This study proposes an MPC approach developed for single-phase three-level NPC converters to meet these objectives using a single reference voltage consisting of a difference-mode term and a common-mode term in each phase. The difference-mode term and the common-mode term are responsible for sinusoidal ac source current synthesis and dc capacitor voltage balancing, respectively. Then, a single cost function compares the adjusted reference voltage with possible voltage candidates to select an optimal switching state, resulting in the smallest cost function value. Different from the conventional MPC method, the proposed approach avoids the selection of weighting factors and the attendance of various control objectives. Thanks to the deterministic approach, the proposed MPC method is straightforward to implement and maintain fast transient performance while guaranteeing the control objectives. Finally, the effectiveness and feasibility of the proposed approach for single-phase three-level NPC are verified through comprehensive experimental results.https://www.mdpi.com/2076-3417/10/24/8840neutral point clamped converterpredictive control methoddeterministic approach |
| spellingShingle | Eun-Su Jun Minh Hoang Nguyen Sangshin Kwak Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters Applied Sciences neutral point clamped converter predictive control method deterministic approach |
| title | Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters |
| title_full | Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters |
| title_fullStr | Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters |
| title_full_unstemmed | Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters |
| title_short | Model Predictive Control Method Based on Deterministic Reference Voltage for Single-Phase Three-Level NPC Converters |
| title_sort | model predictive control method based on deterministic reference voltage for single phase three level npc converters |
| topic | neutral point clamped converter predictive control method deterministic approach |
| url | https://www.mdpi.com/2076-3417/10/24/8840 |
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