Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects
Testing of power electronic converters can advantageously be carried out in power-hardware-in-the-loop (P-HIL) environments that emulate the behavior of power grids, electric motors, etc. The interface between the model and the device under test requires a power amplifier whose bandwidth ultimately...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2022-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9766331/ |
| _version_ | 1811256326122110976 |
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| author | Julian Bohler Jonas Huber Johann Wurz Martin Stransky Nissim Uvaidov Srdjan Srdic Johann W. Kolar |
| author_facet | Julian Bohler Jonas Huber Johann Wurz Martin Stransky Nissim Uvaidov Srdjan Srdic Johann W. Kolar |
| author_sort | Julian Bohler |
| collection | DOAJ |
| description | Testing of power electronic converters can advantageously be carried out in power-hardware-in-the-loop (P-HIL) environments that emulate the behavior of power grids, electric motors, etc. The interface between the model and the device under test requires a power amplifier whose bandwidth ultimately limits the accuracy of the emulation. Hence, there is a need for general-purpose AC power amplifiers with ultra-high power bandwidth. This paper first provides a comprehensive review of amplifier concepts proposed over the past decades, i.e., linear power amplifiers, switch-mode amplifiers, including advanced variants such as multilevel (parallel-interleaving) and multicell (series-interleaving) topologies, as well as hybrid approaches that, e.g., combine analog and switch-mode stages. Based on this review, the two key concepts (parallel-interleaving of bridge-legs and cascading of converter cells) that facilitate high efficiency and ultra-high power bandwidth are identified and discussed, covering also suitable isolated mains interfaces and control considerations. Finally, we present a three-phase amplifier system that uses six cascaded converter cells per phase to realize an effective switching frequency of 3.6MHz. The prototype thus achieves a measured power bandwidth of 100kHz at the nominal phase output voltage of 230Vrms, and an output power of up to 10kW per phase. |
| first_indexed | 2024-04-12T17:39:31Z |
| format | Article |
| id | doaj.art-4eb81c4434bd410a86f66c5b8cb1fd28 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-04-12T17:39:31Z |
| publishDate | 2022-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-4eb81c4434bd410a86f66c5b8cb1fd282022-12-22T03:22:51ZengIEEEIEEE Access2169-35362022-01-0110546135463310.1109/ACCESS.2022.31722919766331Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future ProspectsJulian Bohler0https://orcid.org/0000-0003-4571-8983Jonas Huber1https://orcid.org/0000-0001-6439-2099Johann Wurz2Martin Stransky3Nissim Uvaidov4Srdjan Srdic5https://orcid.org/0000-0002-1553-4131Johann W. Kolar6https://orcid.org/0000-0002-6000-7402Power Electronic Systems Laboratory, ETH Zürich, Zürich, SwitzerlandPower Electronic Systems Laboratory, ETH Zürich, Zürich, SwitzerlandEGSTON Power Electronics GmbH, Klosterneuburg, AustriaEGSTON Power Electronics GmbH, Klosterneuburg, AustriaEGSTON Power Electronics GmbH, Klosterneuburg, AustriaEGSTON Power Electronics GmbH, Klosterneuburg, AustriaPower Electronic Systems Laboratory, ETH Zürich, Zürich, SwitzerlandTesting of power electronic converters can advantageously be carried out in power-hardware-in-the-loop (P-HIL) environments that emulate the behavior of power grids, electric motors, etc. The interface between the model and the device under test requires a power amplifier whose bandwidth ultimately limits the accuracy of the emulation. Hence, there is a need for general-purpose AC power amplifiers with ultra-high power bandwidth. This paper first provides a comprehensive review of amplifier concepts proposed over the past decades, i.e., linear power amplifiers, switch-mode amplifiers, including advanced variants such as multilevel (parallel-interleaving) and multicell (series-interleaving) topologies, as well as hybrid approaches that, e.g., combine analog and switch-mode stages. Based on this review, the two key concepts (parallel-interleaving of bridge-legs and cascading of converter cells) that facilitate high efficiency and ultra-high power bandwidth are identified and discussed, covering also suitable isolated mains interfaces and control considerations. Finally, we present a three-phase amplifier system that uses six cascaded converter cells per phase to realize an effective switching frequency of 3.6MHz. The prototype thus achieves a measured power bandwidth of 100kHz at the nominal phase output voltage of 230Vrms, and an output power of up to 10kW per phase.https://ieeexplore.ieee.org/document/9766331/Power-hardware-in-the-loop (P-HIL)grid emulationmotor emulationpower amplifier topologiesswitch-mode power amplifierultra-high-bandwidth power amplifier |
| spellingShingle | Julian Bohler Jonas Huber Johann Wurz Martin Stransky Nissim Uvaidov Srdjan Srdic Johann W. Kolar Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects IEEE Access Power-hardware-in-the-loop (P-HIL) grid emulation motor emulation power amplifier topologies switch-mode power amplifier ultra-high-bandwidth power amplifier |
| title | Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects |
| title_full | Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects |
| title_fullStr | Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects |
| title_full_unstemmed | Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects |
| title_short | Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects |
| title_sort | ultra high bandwidth power amplifiers a technology overview and future prospects |
| topic | Power-hardware-in-the-loop (P-HIL) grid emulation motor emulation power amplifier topologies switch-mode power amplifier ultra-high-bandwidth power amplifier |
| url | https://ieeexplore.ieee.org/document/9766331/ |
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