A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier
Since the parasitic voltage ringing and switching power losses limit the operation of active devices at elevated frequencies; therefore, a higher‐order inductor‐capacitor (LC) filter is commonly used, which offers extended attenuation above the cutoff frequency and thus, improves the total harmonic...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-10-01
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| Series: | Electronics |
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| Online Access: | http://www.mdpi.com/2079-9292/7/10/261 |
| _version_ | 1798039670760669184 |
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| author | Haider Zaman Xiancheng Zheng Xiaohua Wu Shahbaz Khan Husan Ali |
| author_facet | Haider Zaman Xiancheng Zheng Xiaohua Wu Shahbaz Khan Husan Ali |
| author_sort | Haider Zaman |
| collection | DOAJ |
| description | Since the parasitic voltage ringing and switching power losses limit the operation of active devices at elevated frequencies; therefore, a higher‐order inductor‐capacitor (LC) filter is commonly used, which offers extended attenuation above the cutoff frequency and thus, improves the total harmonic distortion (THD) of the amplifier. This paper applies the concept of integral sliding‐mode control to a fourth‐order class‐D amplifier. Two fixed‐frequency double integral sliding‐mode (FFDISM) controllers are proposed, where one uses the inductor current while the other involves the capacitor current feedback. Their equivalent control equations are derived, but from the realization viewpoint, the controller using the capacitor current feedback is advantageous and, therefore, is selected for final implementation. The performance of the proposed FFDISM controller for fourth‐order GaN class‐D amplifier is confirmed using simulation and experimental results. |
| first_indexed | 2024-04-11T21:57:03Z |
| format | Article |
| id | doaj.art-bdb3e21eb0cc47939fe3918cb30dee7c |
| institution | Directory Open Access Journal |
| issn | 2079-9292 |
| language | English |
| last_indexed | 2024-04-11T21:57:03Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Electronics |
| spelling | doaj.art-bdb3e21eb0cc47939fe3918cb30dee7c2022-12-22T04:01:04ZengMDPI AGElectronics2079-92922018-10-0171026110.3390/electronics7100261electronics7100261A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D AmplifierHaider Zaman0Xiancheng Zheng1Xiaohua Wu2Shahbaz Khan3Husan Ali4School of Automation, Northwestern Polytechnical University, Xi’an 710000, ChinaSchool of Automation, Northwestern Polytechnical University, Xi’an 710000, ChinaSchool of Automation, Northwestern Polytechnical University, Xi’an 710000, ChinaSchool of Automation, Northwestern Polytechnical University, Xi’an 710000, ChinaSchool of Automation, Northwestern Polytechnical University, Xi’an 710000, ChinaSince the parasitic voltage ringing and switching power losses limit the operation of active devices at elevated frequencies; therefore, a higher‐order inductor‐capacitor (LC) filter is commonly used, which offers extended attenuation above the cutoff frequency and thus, improves the total harmonic distortion (THD) of the amplifier. This paper applies the concept of integral sliding‐mode control to a fourth‐order class‐D amplifier. Two fixed‐frequency double integral sliding‐mode (FFDISM) controllers are proposed, where one uses the inductor current while the other involves the capacitor current feedback. Their equivalent control equations are derived, but from the realization viewpoint, the controller using the capacitor current feedback is advantageous and, therefore, is selected for final implementation. The performance of the proposed FFDISM controller for fourth‐order GaN class‐D amplifier is confirmed using simulation and experimental results.http://www.mdpi.com/2079-9292/7/10/261fixed-frequency double integral sliding-mode (FFDISM)class-D amplifierQ-factorGaN cascode |
| spellingShingle | Haider Zaman Xiancheng Zheng Xiaohua Wu Shahbaz Khan Husan Ali A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier Electronics fixed-frequency double integral sliding-mode (FFDISM) class-D amplifier Q-factor GaN cascode |
| title | A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier |
| title_full | A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier |
| title_fullStr | A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier |
| title_full_unstemmed | A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier |
| title_short | A Fixed-Frequency Sliding-Mode Controller for Fourth-Order Class-D Amplifier |
| title_sort | fixed frequency sliding mode controller for fourth order class d amplifier |
| topic | fixed-frequency double integral sliding-mode (FFDISM) class-D amplifier Q-factor GaN cascode |
| url | http://www.mdpi.com/2079-9292/7/10/261 |
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