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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Main Authors: Kazuki Hanabusa, Kohji Higuchi, Tatsuyoshi Kajikawa, Suttichai Premrudeepreechacharn, Kamon Jirasereeamornkul
Format: Conference Proceeding
Published: 2018
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Online Access: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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Institution: Chiang Mai University
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spelling 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
institution Chiang Mai University
building Chiang Mai University Library
country Thailand
collection CMU Intellectual Repository
topic Energy
Engineering
Mathematics
Agricultural and Biological Sciences
Arts and Humanities
spellingShingle 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
description © 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
url 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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