Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time»
Goal. Analysis of the effect of load inductance at the output of the class D amplifier for different values of the duration of «dead time» and assessment of the adequacy of existing mathematical models for calculating the THD at the output of the amplifier depending on the duration of «dead time». M...
Saved in:
| Date: | 2021 |
|---|---|
| Main Authors: | , , , , , |
| Format: | Article |
| Language: | English Ukrainian |
| Published: |
National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine
2021
|
| Subjects: | |
| Online Access: | http://eie.khpi.edu.ua/article/view/228354 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Journal Title: | Electrical Engineering & Electromechanics |
Institution
Electrical Engineering & Electromechanics| _version_ | 1856543378982830080 |
|---|---|
| author | Naida, S. A. Onykienko, Y. O. Drozdenko, O. I. Smolenska, O. I. Baran, V. S. Iakunina, N. O. |
| author_facet | Naida, S. A. Onykienko, Y. O. Drozdenko, O. I. Smolenska, O. I. Baran, V. S. Iakunina, N. O. |
| author_sort | Naida, S. A. |
| baseUrl_str | |
| collection | OJS |
| datestamp_date | 2021-06-23T19:06:45Z |
| description | Goal. Analysis of the effect of load inductance at the output of the class D amplifier for different values of the duration of «dead time» and assessment of the adequacy of existing mathematical models for calculating the THD at the output of the amplifier depending on the duration of «dead time». Methodology. The study of the effect of «dead time» on the THD was performed using a computer model of the half-bridge converter board EPC9035 from Efficient Power Conversion. This board contains GaN transistors EPC2022 eGaN®, the corresponding control driver and other necessary elements for operation. The use of GaN transistors has made it possible to investigate the operation in a wide range of frequent switching, both to control the motor and to amplify the audio signal. Results. It is established that the value of load inductance affects the level of nonlinear distortions caused by «dead time». At inductance values that provide a constant sign of the output current, a difference arises between the duration of the input and output pulses, which increases the THD. At inductance values, when the choke current changes sign during a pulse, there is no error between the duration of the input and output pulses. Changing the inductance changes the relationship between the error signal and the non-error signal. THD changes accordingly. At high conversion frequencies, the voltage spikes caused by the choke current through the built-in diodes during the dead time are partially compensated by overcharging the output capacitance of the transistors, which also reduces harmonic distortion. Originality. For the first time, the value of the THD at the outlets in the fallowness of the different indices of the inductance of the choke and the theoretical calculation of the value in the results of the computer model was obtained. Practical significance. The dependence of the THD values on the inductance of the choke for converters with a switching frequency range from 1 kHz to 400 kHz, which allows them to be used both to control the motor and to amplify the audio signal. |
| first_indexed | 2025-07-17T11:48:24Z |
| format | Article |
| id | eiekhpieduua-article-228354 |
| institution | Electrical Engineering & Electromechanics |
| language | English Ukrainian |
| last_indexed | 2025-07-17T11:48:24Z |
| publishDate | 2021 |
| publisher | National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine |
| record_format | ojs |
| spelling | eiekhpieduua-article-2283542021-06-23T19:06:45Z Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» Аналіз впливу індуктивності навантаження на спричинені «мертвим часом» нелінійні спотворення підсилювача класу D Naida, S. A. Onykienko, Y. O. Drozdenko, O. I. Smolenska, O. I. Baran, V. S. Iakunina, N. O. GaN транзистори підсилювачі класу D нелінійні спотворення «мертвий час» коефіцієнт гармонічних спотворень GaN transistors Class-D amplifier nonlinear distortion dead time THD Goal. Analysis of the effect of load inductance at the output of the class D amplifier for different values of the duration of «dead time» and assessment of the adequacy of existing mathematical models for calculating the THD at the output of the amplifier depending on the duration of «dead time». Methodology. The study of the effect of «dead time» on the THD was performed using a computer model of the half-bridge converter board EPC9035 from Efficient Power Conversion. This board contains GaN transistors EPC2022 eGaN®, the corresponding control driver and other necessary elements for operation. The use of GaN transistors has made it possible to investigate the operation in a wide range of frequent switching, both to control the motor and to amplify the audio signal. Results. It is established that the value of load inductance affects the level of nonlinear distortions caused by «dead time». At inductance values that provide a constant sign of the output current, a difference arises between the duration of the input and output pulses, which increases the THD. At inductance values, when the choke current changes sign during a pulse, there is no error between the duration of the input and output pulses. Changing the inductance changes the relationship between the error signal and the non-error signal. THD changes accordingly. At high conversion frequencies, the voltage spikes caused by the choke current through the built-in diodes during the dead time are partially compensated by overcharging the output capacitance of the transistors, which also reduces harmonic distortion. Originality. For the first time, the value of the THD at the outlets in the fallowness of the different indices of the inductance of the choke and the theoretical calculation of the value in the results of the computer model was obtained. Practical significance. The dependence of the THD values on the inductance of the choke for converters with a switching frequency range from 1 kHz to 400 kHz, which allows them to be used both to control the motor and to amplify the audio signal. В роботі досліджено вплив індуктивності навантаження підсилювача класу D на значення коефіцієнту гармонічних спотворень (КГС) на виході для різних значень тривалості «мертвого часу» або вимкненого стану вихідних транзисторів. Оцінена адекватність існуючих математичних моделей для розрахунку КГС на виході підсилювача в залежності від тривалості «мертвого часу». Наведено результати комп’ютерного моделювання підсилювача класу D та досліджено значення КГС на виході в залежності від різних номіналів індуктивності вихідного дроселя. Виконано порівняння теоретично обчислених значень з результатами комп’ютерного моделювання. В результаті дослідження встановлено, що КГС, спричинений наявністю «мертвого часу» залежить від індуктивності навантаження. Отриманий у результаті моделювання КГС співпадає з розрахованим за формулою тільки для певних значень індуктивності навантаження. В моделі використано GaN транзистори, що дозволило дослідити роботу підсилювача у широкому діапазоні частот перемикання. National Technical University "Kharkiv Polytechnic Institute" and Аnatolii Pidhornyi Institute of Power Machines and Systems of NAS of Ukraine 2021-06-23 Article Article application/pdf application/pdf http://eie.khpi.edu.ua/article/view/228354 10.20998/2074-272X.2021.3.05 Electrical Engineering & Electromechanics; No. 3 (2021); 32-37 Электротехника и Электромеханика; № 3 (2021); 32-37 Електротехніка і Електромеханіка; № 3 (2021); 32-37 2309-3404 2074-272X en uk http://eie.khpi.edu.ua/article/view/228354/233441 http://eie.khpi.edu.ua/article/view/228354/233442 Copyright (c) 2021 S. A. Naida, Y. O. Onykienko, O. I. Drozdenko, O. I. Smolenska, V. S. Baran, N. O. Iakunina http://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | GaN transistors Class-D amplifier nonlinear distortion dead time THD Naida, S. A. Onykienko, Y. O. Drozdenko, O. I. Smolenska, O. I. Baran, V. S. Iakunina, N. O. Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» |
| title | Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» |
| title_alt | Аналіз впливу індуктивності навантаження на спричинені «мертвим часом» нелінійні спотворення підсилювача класу D |
| title_full | Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» |
| title_fullStr | Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» |
| title_full_unstemmed | Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» |
| title_short | Analysis of the influence of load inductance on nonlinear distortions of a class D amplifier caused by «dead time» |
| title_sort | analysis of the influence of load inductance on nonlinear distortions of a class d amplifier caused by «dead time» |
| topic | GaN transistors Class-D amplifier nonlinear distortion dead time THD |
| topic_facet | GaN транзистори підсилювачі класу D нелінійні спотворення «мертвий час» коефіцієнт гармонічних спотворень GaN transistors Class-D amplifier nonlinear distortion dead time THD |
| url | http://eie.khpi.edu.ua/article/view/228354 |
| work_keys_str_mv | AT naidasa analysisoftheinfluenceofloadinductanceonnonlineardistortionsofaclassdamplifiercausedbydeadtime AT onykienkoyo analysisoftheinfluenceofloadinductanceonnonlineardistortionsofaclassdamplifiercausedbydeadtime AT drozdenkooi analysisoftheinfluenceofloadinductanceonnonlineardistortionsofaclassdamplifiercausedbydeadtime AT smolenskaoi analysisoftheinfluenceofloadinductanceonnonlineardistortionsofaclassdamplifiercausedbydeadtime AT baranvs analysisoftheinfluenceofloadinductanceonnonlineardistortionsofaclassdamplifiercausedbydeadtime AT iakuninano analysisoftheinfluenceofloadinductanceonnonlineardistortionsofaclassdamplifiercausedbydeadtime AT naidasa analízvplivuínduktivnostínavantažennânaspričinenímertvimčasomnelíníjníspotvorennâpídsilûvačaklasud AT onykienkoyo analízvplivuínduktivnostínavantažennânaspričinenímertvimčasomnelíníjníspotvorennâpídsilûvačaklasud AT drozdenkooi analízvplivuínduktivnostínavantažennânaspričinenímertvimčasomnelíníjníspotvorennâpídsilûvačaklasud AT smolenskaoi analízvplivuínduktivnostínavantažennânaspričinenímertvimčasomnelíníjníspotvorennâpídsilûvačaklasud AT baranvs analízvplivuínduktivnostínavantažennânaspričinenímertvimčasomnelíníjníspotvorennâpídsilûvačaklasud AT iakuninano analízvplivuínduktivnostínavantažennânaspričinenímertvimčasomnelíníjníspotvorennâpídsilûvačaklasud |