The Impact of ITRW: How Can WBG Power Semiconductors Break Through?

Ferreira, J.A.; Wilson, Peter

doi:10.1109/ojpel.2021.3071876

Cited by 5 publications

(4 citation statements)

References 18 publications

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“…The pre-regulation stage can also help in achieving zero-voltage turn-on of the switches that drive the second stage over a wide range of output voltages [2], [10]. Of course, the exploitation of latest wide-bandgap power semiconductors allows to further reduce semiconductor loss [35]. In spite of the presence of an additional stage, some valuable characteristics are highlighted and shown in terms of overall conversion efficiency.…”

Section: ) Approaches Considering Additional Conversion Stagesmentioning

confidence: 99%

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Zanatta

Caldognetto

Biadene

et al. 2022

IEEE Trans. on Ind. Applicat.

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This paper proposes and analyzes a two-stage isolated dc-dc converter for electric vehicle charging applications, where high efficiency over a wide range of battery voltages is required. It employs a first pre-regulation stage and a second half-bridge LLC stage, integrated with the first. The second stage is always operated at resonance, ensuring high efficiency. The first pre-regulation stage is responsible for the desired input-to-output voltage conversion ratio and the zero-voltage switching operation of all the switches. This allows low conversion losses even with voltages that may vary over a wide range. The paper presents the conversion structure, the converter analysis, the design of the magnetic elements, and demonstrates the converter operation considering an experimental prototype interfacing a 750 V dclink with an output bus with nominal voltage range 250 V-500 V. The implemented module is rated 5 kW and achieves a peak efficiency of 98.0% at 3 kW output power.

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Section: ) Approaches Considering Additional Conversion Stagesmentioning

confidence: 99%

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Zanatta

Caldognetto

Biadene

et al. 2022

IEEE Trans. on Ind. Applicat.

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“…ower density, efficiency and reliability are key design drivers and central concerns for adjustable speed drives in a range of applications including industrial automation and robotics, transportation and renewable energy systems. Wide bandgap (WBG) power semiconductor devices such as silicon carbide (SiC) MOSFETs offer significant potential for improving the power density and efficiency of adjustable speed drives due to their superior material characteristics [1]- [4]. For instance, SiC MOSFETs can operate at higher switching frequencies while maintaining high efficiency due to their fast-switching speed, compared with silicon (Si) IGBTs, which reduces passive filtering components and cooling requirements [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Inverter With Paralleled Modules to Extend Current Capacity and Combat Motor Overvoltage in SiC-Based Adjustable Speed Drives

Zhou

Diab

Yuan

et al. 2024

IEEE Trans. Ind. Electron.

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This article proposes a quasi-three-level (Q3L) PWM-based module-parallel inverter to address two major issues of deploying SiC MOSFETs in high-power cable-fed adjustable speed drives. Firstly, the maximum output power of SiC inverters is limited due to the lack of high current rating SiC devices, which cannot satisfy the demand of high-power applications such as heavy-duty electric vehicles and more electric aeroplanes. The second issue comes from the fast-switching speed of SiC MOSFETs, where power cables act like transmission lines under steep rising/falling voltages (high 𝒅𝒗/𝒅𝒕), with back and forth voltage reflections that result in serious overvoltage oscillations at motor terminals. To address these issues, a SiC module-parallel inverter is adopted with elevated current capacity, where the phase voltage is maintained at the mid-point of a coupled inductor connected to the output nodes of each paralleled half-bridge module. By actively controlling the switching delay between the paralleled half-bridge-legs, Q3L PWM waveforms are generated at the inverter output nodes which can mitigate the motor overvoltage due to the voltage reflections through power cables. An active current control technique is also proposed to facilitate the current balance between the paralleled half-bridge-legs. The proposed Q3L PWM-based module-parallel inverter is experimentally verified using a SiC-based cable-fed motor drive system. The results show that the proposed approach can extend the current capabilities of SiC devices as well as mitigate the motor overvoltage, enabling the adoption of SiC devices in high-power motor drives.

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“…Optimization of converter hardware design is one possibility to improve converter performance by applying wide bandgap semiconductors or new magnetic materials [14]- [16]. Also, topologies could be hybridized to attain the benefits of several converter classes.…”

Section: Introductionmentioning

confidence: 99%

Survey of Topology Morphing Control Techniques for Performance Enhancement of Galvanically Isolated DC-DC Converters

Sidorov

Chub

Vinnikov

et al. 2022

IEEE Open J. Ind. Electron. Soc.

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This paper provides a systematic survey on the topology morphing control techniques used in the galvanically isolated dc-dc converters. Existing techniques are broadly categorized based on the part where a converter changes its topology: at the input side, at the output side, and the advanced techniques that cannot be categorized in the first two groups. The techniques span from the simple reconfiguration between the full-and half-bridge switching cells similar to the conventional power supplies with universal ac input to the advanced multi-track topology and reconfigurable resonant tanks. In addition, the described variety of application examples proves the wide application range and versatility of the topology morphing control. These include fault tolerance, efficiency curve flattening, input voltage range extension, and other properties. Hence, this article provides a single comprehensive source for researchers and engineers willing to enter the topic of topology morphing control.INDEX TERMS Galvanically isolated DC-DC power converter, topology morphing control, series resonant converters.

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The Impact of ITRW: How Can WBG Power Semiconductors Break Through?

Cited by 5 publications

References 18 publications

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Design and Implementation of a Two-Stage Resonant Converter for Wide Output Range Operation

Inverter With Paralleled Modules to Extend Current Capacity and Combat Motor Overvoltage in SiC-Based Adjustable Speed Drives

Survey of Topology Morphing Control Techniques for Performance Enhancement of Galvanically Isolated DC-DC Converters

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