A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching
In this paper an advanced modulation strategy is proposed that generates the switch control signals of a power converter while inherently guaranteeing zero-voltage switching (ZVS) operation. The proposed modulator is based on a first-order <inline-formula><tex-math notation="LaTeX"...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2024-01-01
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| Series: | IEEE Open Journal of Power Electronics |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10416366/ |
| _version_ | 1827352840210743296 |
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| author | BART F. J. BOKMANS Bas J. D. Vermulst Jan M. Schellekens Henk Huisman |
| author_facet | BART F. J. BOKMANS Bas J. D. Vermulst Jan M. Schellekens Henk Huisman |
| author_sort | BART F. J. BOKMANS |
| collection | DOAJ |
| description | In this paper an advanced modulation strategy is proposed that generates the switch control signals of a power converter while inherently guaranteeing zero-voltage switching (ZVS) operation. The proposed modulator is based on a first-order <inline-formula><tex-math notation="LaTeX">$\Delta \Sigma$</tex-math></inline-formula>-modulator combined with a hold-off circuit. This hold-off circuit consists of a D-latch and maintains the converter's switching state until ZVS commutation can be achieved while an integrator ensures the correct average output. Furthermore, features are implemented to improve start-up and transient behavior. The operating principle and stability of the proposed modulator is discussed and simulation results are presented. Finally, the proposed modulator is validated on a <inline-formula><tex-math notation="LaTeX">$2 \,\mathrm{k}\mathrm{W}$</tex-math></inline-formula> GaN-based synchronous buck converter. Results show that the converter naturally operates under ZVS conditions by continuously varying its switching frequency without having to compute switching times or frequencies. The proposed method is an interesting alternative to pulse-width modulation especially when operating at high switching frequencies or when the switching loss in the power converter is significant. |
| first_indexed | 2024-03-08T03:12:50Z |
| format | Article |
| id | doaj.art-892d7a3f02624bf585628189234e7578 |
| institution | Directory Open Access Journal |
| issn | 2644-1314 |
| language | English |
| last_indexed | 2024-03-08T03:12:50Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Open Journal of Power Electronics |
| spelling | doaj.art-892d7a3f02624bf585628189234e75782024-02-13T00:01:53ZengIEEEIEEE Open Journal of Power Electronics2644-13142024-01-01525026010.1109/OJPEL.2024.335984810416366A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage SwitchingBART F. J. BOKMANS0https://orcid.org/0000-0001-8222-4953Bas J. D. Vermulst1https://orcid.org/0000-0001-9019-6147Jan M. Schellekens2https://orcid.org/0000-0002-6649-6104Henk Huisman3https://orcid.org/0000-0002-0671-2506Power Electronics Lab (PELe), Eindhoven University of Technology, Eindhoven, The NetherlandsPower Electronics Lab (PELe), Eindhoven University of Technology, Eindhoven, The NetherlandsPower Electronics Lab (PELe), Eindhoven University of Technology, Eindhoven, The NetherlandsPower Electronics Lab (PELe), Eindhoven University of Technology, Eindhoven, The NetherlandsIn this paper an advanced modulation strategy is proposed that generates the switch control signals of a power converter while inherently guaranteeing zero-voltage switching (ZVS) operation. The proposed modulator is based on a first-order <inline-formula><tex-math notation="LaTeX">$\Delta \Sigma$</tex-math></inline-formula>-modulator combined with a hold-off circuit. This hold-off circuit consists of a D-latch and maintains the converter's switching state until ZVS commutation can be achieved while an integrator ensures the correct average output. Furthermore, features are implemented to improve start-up and transient behavior. The operating principle and stability of the proposed modulator is discussed and simulation results are presented. Finally, the proposed modulator is validated on a <inline-formula><tex-math notation="LaTeX">$2 \,\mathrm{k}\mathrm{W}$</tex-math></inline-formula> GaN-based synchronous buck converter. Results show that the converter naturally operates under ZVS conditions by continuously varying its switching frequency without having to compute switching times or frequencies. The proposed method is an interesting alternative to pulse-width modulation especially when operating at high switching frequencies or when the switching loss in the power converter is significant.https://ieeexplore.ieee.org/document/10416366/Modulation strategydelta-sigma modulationzero-voltage switchinghigh frequency power convertervariable frequencyelektromagnetic interference |
| spellingShingle | BART F. J. BOKMANS Bas J. D. Vermulst Jan M. Schellekens Henk Huisman A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching IEEE Open Journal of Power Electronics Modulation strategy delta-sigma modulation zero-voltage switching high frequency power converter variable frequency elektromagnetic interference |
| title | A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching |
| title_full | A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching |
| title_fullStr | A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching |
| title_full_unstemmed | A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching |
| title_short | A Delta-Sigma Modulated Power Converter With Inherent Zero-Voltage Switching |
| title_sort | delta sigma modulated power converter with inherent zero voltage switching |
| topic | Modulation strategy delta-sigma modulation zero-voltage switching high frequency power converter variable frequency elektromagnetic interference |
| url | https://ieeexplore.ieee.org/document/10416366/ |
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