Switch mode converter based high performance power-hardware-in-the-loop grid emulator

Si, Guangye; Kennel, Ralph

doi:10.1109/spec.2016.7846010

Cited by 7 publications

(2 citation statements)

References 15 publications

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“…A first option to do so couples the compensation voltage via a transformer into the main power flow path [106], [136], as done for decades in power grid applications [112], [135]. This concept has recently been applied to a grid simulation system in [137], [138], where a standard 400 V, 5 kVA IGBT inverter is combined with a 100 V MOSFET inverter that is responsible for generating higher-order harmonics. Similarly, [139]- [141] use a three-phase transformer to combine the outputs of a 800 V, 12 A three-phase inverter switching at 20 kHz with a 100 V small-signal inverter operating at 200 kHz.…”

Section: ) Series Configurationmentioning

confidence: 99%

Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects

Bohler¹,

Huber²,

Wurz³

et al. 2022

IEEE Access

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Testing of power electronic converters can advantageously be carried out in power-hardwarein-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 (parallelinterleaving 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 3.6 MHz. The prototype thus achieves a measured power bandwidth of 100 kHz at the nominal phase output voltage of 230 V rms, and an output power of up to 10 kW per phase.INDEX TERMS Power-hardware-in-the-loop (P-HIL), grid emulation, motor emulation, power amplifier topologies, switch-mode power amplifier, ultra-high-bandwidth power amplifier.

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Section: ) Series Configurationmentioning

confidence: 99%

Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects

Bohler¹,

Huber²,

Wurz³

et al. 2022

IEEE Access

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“…Main approaches to reach higher switching frequency and dynamics in this case are series voltage injection by a second inverter [3] [4], interleaved parallel operation of inverters or phases [5] [6] and multilevel inverters. The latter offer a higher apparent output switching frequency than their two-or threelevel counterparts with the same output voltage and power rating.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of 1.7 kV SiC MOSFETs for a regenerative cascaded H-bridge multilevel converter cell

Hildebrandt

Petković

Dujić

2018

2018 IEEE International Conference on Industrial Technology (ICIT)

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High fidelity AC grid emulators allow early testing and qualification of various equipment under conditions close to those expected in reality. Realizing this at medium voltage high power level is associated with certain challenges, some of which are discussed in this paper. Medium voltage grid emulator based on the well-known four-quadrant Robicon topology is considered as platform for realization of the AC grid emulator. To achieve high resolution AC waveform with sufficiently high control bandwidth, SiC based cell design is compared with pure Si and Hybrid (Si+SiC) designs. Using SiC devices for the output H-bridge stage allows significantly higher switching frequencies, improving achievable control bandwidth and improving fidelity of emulator output voltage.

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Comparison of an Interleaved Multi-Branch Inverter and a Four-Level Inverter with Variable Voltage Levels for Emulation of Three-Phase Machines

Fischer

Ruthardt

et al. 2021

2021 IEEE Energy Conversion Congress and Exposition (ECCE)

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Switch mode converter based high performance power-hardware-in-the-loop grid emulator

Cited by 7 publications

References 15 publications

Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects

Ultra-High-Bandwidth Power Amplifiers: A Technology Overview and Future Prospects

Evaluation of 1.7 kV SiC MOSFETs for a regenerative cascaded H-bridge multilevel converter cell

Comparison of an Interleaved Multi-Branch Inverter and a Four-Level Inverter with Variable Voltage Levels for Emulation of Three-Phase Machines

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