Robust digital control of a class-D amplifier with low switching frequency for vibration generator
© 2017 IEEE. In late years a class-D amplifier has been used for a vibration generator and IGBT is often used for the switching element of the class-D amplifier. However, since the switching frequency of IGBT is limited low, it is difficult to make the bandwidth of the class-D amplifier wide. The ba...
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th-cmuir.6653943832-435702018-04-25T07:37:10Z Robust digital control of a class-D amplifier with low switching frequency for vibration generator Kazuki Hanabusa Kohji Higuchi Tatsuyoshi Kajikawa Suttichai Premrudeepreechacharn Kamon Jirasereeamornkul Energy Engineering Mathematics Agricultural and Biological Sciences Arts and Humanities © 2017 IEEE. In late years a class-D amplifier has been used for a vibration generator and IGBT is often used for the switching element of the class-D amplifier. However, since the switching frequency of IGBT is limited low, it is difficult to make the bandwidth of the class-D amplifier wide. The bandwidth 5 kHz is required by the amplifier for the vibration generator with load impedance 2 -8 ω. In this paper, it is shown that the bandwidth 5 kHz of the class-D amplifier can be realized by applying A2DOF control with the switching frequency 50 kHz. Since the output PWM frequency of a bridge circuit increase twice as much as IGBT switching frequency by using a double carrier PWM generating system, the sampling frequency of a controller can be increased twice as much as the switching frequency, i.e. is 100 kHz. Then the bandwidth 5 kHz of the class-D amplifier for the vibration generator with load impedance 2 - 8 ω can be realized by devising how to design A2DOF control. The controller is implemented in a DSP and it is shown from experiment that the desired performance is attained enough. 2018-01-24T03:50:13Z 2018-01-24T03:50:13Z 2017-10-19 Conference Proceeding 2-s2.0-85039949182 10.1109/IEECON.2017.8075723 https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85039949182&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43570 |
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Energy Engineering Mathematics Agricultural and Biological Sciences Arts and Humanities Kazuki Hanabusa Kohji Higuchi Tatsuyoshi Kajikawa Suttichai Premrudeepreechacharn Kamon Jirasereeamornkul Robust digital control of a class-D amplifier with low switching frequency for vibration generator |
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© 2017 IEEE. In late years a class-D amplifier has been used for a vibration generator and IGBT is often used for the switching element of the class-D amplifier. However, since the switching frequency of IGBT is limited low, it is difficult to make the bandwidth of the class-D amplifier wide. The bandwidth 5 kHz is required by the amplifier for the vibration generator with load impedance 2 -8 ω. In this paper, it is shown that the bandwidth 5 kHz of the class-D amplifier can be realized by applying A2DOF control with the switching frequency 50 kHz. Since the output PWM frequency of a bridge circuit increase twice as much as IGBT switching frequency by using a double carrier PWM generating system, the sampling frequency of a controller can be increased twice as much as the switching frequency, i.e. is 100 kHz. Then the bandwidth 5 kHz of the class-D amplifier for the vibration generator with load impedance 2 - 8 ω can be realized by devising how to design A2DOF control. The controller is implemented in a DSP and it is shown from experiment that the desired performance is attained enough. |
format |
Conference Proceeding |
author |
Kazuki Hanabusa Kohji Higuchi Tatsuyoshi Kajikawa Suttichai Premrudeepreechacharn Kamon Jirasereeamornkul |
author_facet |
Kazuki Hanabusa Kohji Higuchi Tatsuyoshi Kajikawa Suttichai Premrudeepreechacharn Kamon Jirasereeamornkul |
author_sort |
Kazuki Hanabusa |
title |
Robust digital control of a class-D amplifier with low switching frequency for vibration generator |
title_short |
Robust digital control of a class-D amplifier with low switching frequency for vibration generator |
title_full |
Robust digital control of a class-D amplifier with low switching frequency for vibration generator |
title_fullStr |
Robust digital control of a class-D amplifier with low switching frequency for vibration generator |
title_full_unstemmed |
Robust digital control of a class-D amplifier with low switching frequency for vibration generator |
title_sort |
robust digital control of a class-d amplifier with low switching frequency for vibration generator |
publishDate |
2018 |
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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=85039949182&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/43570 |
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