A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter
This study compares two frequently used control strategies in the context of completely digitally controlled critical conduction mode (CRM) buck/buck-boost converters, namely constant on-time (COT) and variable on-time (VOT). The aim of this research is to compare and assess the performance of diffe...
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| Format: | Article |
| Language: | English |
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Gazi University
2023-12-01
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| Series: | Gazi Üniversitesi Fen Bilimleri Dergisi |
| Subjects: | |
| Online Access: | https://dergipark.org.tr/tr/pub/gujsc/issue/81742/1314903 |
| _version_ | 1827394141714120704 |
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| author | Zafer ORTATEPE |
| author_facet | Zafer ORTATEPE |
| author_sort | Zafer ORTATEPE |
| collection | DOAJ |
| description | This study compares two frequently used control strategies in the context of completely digitally controlled critical conduction mode (CRM) buck/buck-boost converters, namely constant on-time (COT) and variable on-time (VOT). The aim of this research is to compare and assess the performance of different control systems in terms of power factor (PF) and total harmonic distortion (THD). The COT control technique employs a fixed on-time period for each switching cycle, resulting in a predictable and straightforward control scheme. On the other hand, VOT control dynamically adapts the on-time period based on the input and output voltage conditions, offering potential advantages in terms of load regulation and stability. The analysis results provide valuable insights into the strengths and limitations of each control technique. Additionally, the dynamic behavior of the converters under various operating conditions is investigated, shedding light on the stability and robustness aspects of each control scheme. The study is conducted using a fully digital setup and evaluated in Matlab/Simulink environment. The findings show that VOT control outperforms COT in terms of THD and PF under steady-state conditions. These findings offer valuable guidance for selecting the appropriate control technique for PFC converters, depending on specific requirements of their applications. |
| first_indexed | 2024-03-08T18:02:58Z |
| format | Article |
| id | doaj.art-07aad53e0d4b43d88eb5c20c82a63194 |
| institution | Directory Open Access Journal |
| issn | 2147-9526 |
| language | English |
| last_indexed | 2024-03-08T18:02:58Z |
| publishDate | 2023-12-01 |
| publisher | Gazi University |
| record_format | Article |
| series | Gazi Üniversitesi Fen Bilimleri Dergisi |
| spelling | doaj.art-07aad53e0d4b43d88eb5c20c82a631942024-01-01T22:26:14ZengGazi UniversityGazi Üniversitesi Fen Bilimleri Dergisi2147-95262023-12-011141232124310.29109/gujsc.1314903 A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC ConverterZafer ORTATEPE0https://orcid.org/0000-0000-0000-0000PAMUKKALE UNIVERSITYThis study compares two frequently used control strategies in the context of completely digitally controlled critical conduction mode (CRM) buck/buck-boost converters, namely constant on-time (COT) and variable on-time (VOT). The aim of this research is to compare and assess the performance of different control systems in terms of power factor (PF) and total harmonic distortion (THD). The COT control technique employs a fixed on-time period for each switching cycle, resulting in a predictable and straightforward control scheme. On the other hand, VOT control dynamically adapts the on-time period based on the input and output voltage conditions, offering potential advantages in terms of load regulation and stability. The analysis results provide valuable insights into the strengths and limitations of each control technique. Additionally, the dynamic behavior of the converters under various operating conditions is investigated, shedding light on the stability and robustness aspects of each control scheme. The study is conducted using a fully digital setup and evaluated in Matlab/Simulink environment. The findings show that VOT control outperforms COT in terms of THD and PF under steady-state conditions. These findings offer valuable guidance for selecting the appropriate control technique for PFC converters, depending on specific requirements of their applications.https://dergipark.org.tr/tr/pub/gujsc/issue/81742/1314903buck/buck-boost converterconstant on-time controlvariable on-time control |
| spellingShingle | Zafer ORTATEPE A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter Gazi Üniversitesi Fen Bilimleri Dergisi buck/buck-boost converter constant on-time control variable on-time control |
| title | A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter |
| title_full | A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter |
| title_fullStr | A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter |
| title_full_unstemmed | A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter |
| title_short | A Comparison of Digital Constant On-Time and Variable On-Time Control in Buck/Buck-Boost PFC Converter |
| title_sort | comparison of digital constant on time and variable on time control in buck buck boost pfc converter |
| topic | buck/buck-boost converter constant on-time control variable on-time control |
| url | https://dergipark.org.tr/tr/pub/gujsc/issue/81742/1314903 |
| work_keys_str_mv | AT zaferortatepe acomparisonofdigitalconstantontimeandvariableontimecontrolinbuckbuckboostpfcconverter AT zaferortatepe comparisonofdigitalconstantontimeandvariableontimecontrolinbuckbuckboostpfcconverter |