Class D audio amplifier with 4th order output filter and self-oscillating full-state hysteresis based feedback driving capacitive transducers

Dennis Nielsen; Arnold Knott; Michael A. E. Andersen

doi:10.1109/EPE.2014.6910924

Class D audio amplifier with 4th order output filter and self-oscillating full-state hysteresis based feedback driving capacitive transducers

Dennis Nielsen, Arnold Knott, Michael A. E. Andersen

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

A practical solution is presented for the design of a non-isolated high voltage DC/AC power converter. The converter is intended to be used as a class D audio amplifier for a Dielectric Electro Active Polymer (DEAP) transducer. A simple and effective hysteretic control scheme for the converter (buck with fourth- order output filter) is developed and analyzed. The proposed design is verified experimentally by a 125 VAR prototype amplifier, capable of delivering a peak output voltage of 240 V within the frequency range of 100 Hz – 3.5 kHz. A peak efficiency of 87 % is reported.

Original language	English
Title of host publication	Proceedings of EPE’14-ECCE
Number of pages	7
Publisher	IEEE
Publication date	2014
DOIs	https://doi.org/10.1109/EPE.2014.6910924
Publication status	Published - 2014
Event	16th Conference on Power Electronics and Applications - Lappeenranta University of Technology, Lappeenranta, Finland Duration: 26 Aug 2014 → 28 Aug 2014 Conference number: 16

Conference

Conference	16th Conference on Power Electronics and Applications
Number	16
Location	Lappeenranta University of Technology
Country/Territory	Finland
City	Lappeenranta
Period	26/08/2014 → 28/08/2014

Keywords

Sliding mode control
High voltage power converters
Drive
Active damping
Amplifiers

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10.1109/EPE.2014.6910924

Class D audio amplifier with 4th order output filter and self oscillating full state hysteresis based feedback driving capacitive transducersAccepted author manuscript, 612 KB

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title = "Class D audio amplifier with 4th order output filter and self-oscillating full-state hysteresis based feedback driving capacitive transducers",

abstract = "A practical solution is presented for the design of a non-isolated high voltage DC/AC power converter. The converter is intended to be used as a class D audio amplifier for a Dielectric Electro Active Polymer (DEAP) transducer. A simple and effective hysteretic control scheme for the converter (buck with fourth- order output filter) is developed and analyzed. The proposed design is verified experimentally by a 125 VAR prototype amplifier, capable of delivering a peak output voltage of 240 V within the frequency range of 100 Hz – 3.5 kHz. A peak efficiency of 87 % is reported.",

keywords = "Sliding mode control, High voltage power converters, Drive, Active damping, Amplifiers",

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AU - Andersen, Michael A. E.

N1 - Conference code: 16

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N2 - A practical solution is presented for the design of a non-isolated high voltage DC/AC power converter. The converter is intended to be used as a class D audio amplifier for a Dielectric Electro Active Polymer (DEAP) transducer. A simple and effective hysteretic control scheme for the converter (buck with fourth- order output filter) is developed and analyzed. The proposed design is verified experimentally by a 125 VAR prototype amplifier, capable of delivering a peak output voltage of 240 V within the frequency range of 100 Hz – 3.5 kHz. A peak efficiency of 87 % is reported.

AB - A practical solution is presented for the design of a non-isolated high voltage DC/AC power converter. The converter is intended to be used as a class D audio amplifier for a Dielectric Electro Active Polymer (DEAP) transducer. A simple and effective hysteretic control scheme for the converter (buck with fourth- order output filter) is developed and analyzed. The proposed design is verified experimentally by a 125 VAR prototype amplifier, capable of delivering a peak output voltage of 240 V within the frequency range of 100 Hz – 3.5 kHz. A peak efficiency of 87 % is reported.

KW - Sliding mode control

KW - High voltage power converters

KW - Drive

KW - Active damping

KW - Amplifiers

U2 - 10.1109/EPE.2014.6910924

DO - 10.1109/EPE.2014.6910924

M3 - Article in proceedings

BT - Proceedings of EPE’14-ECCE

PB - IEEE

T2 - 16th Conference on Power Electronics and Applications

Y2 - 26 August 2014 through 28 August 2014

ER -

Class D audio amplifier with 4th order output filter and self-oscillating full-state hysteresis based feedback driving capacitive transducers

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