Journal ArticleDOI
An SiC MOSFET Based Three-Phase ZVS Inverter Employing Variable Switching Frequency Space Vector PWM Control
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TLDR
In this article, a variable switching frequency space vector pulsewidth modulation control is proposed to achieve zero voltage switching (ZVS) for a three-phase grid-connected voltage source inverter with unity power factor.Abstract:
In this paper, a variable switching frequency space vector pulsewidth modulation control is proposed. It is used to achieve zero voltage switching (ZVS) for a three-phase grid-connected voltage source inverter with unity power factor. A wide range of ZVS can be realized without any additional sensors, auxiliary circuits, or current zero crossing detection circuits. The switching frequency can be easily calculated by a digital controller. The frequency variation range in a line cycle is only about 1.5 times at any specific load. An LCL filter is used to attenuate the high current ripples at the inverter side, and active damping is adopted to avoid the resonance and reduce the filter power loss. The switching loss can be significantly reduced by using silicon carbide mosfet s so that the conversion efficiency is high. The power density can also be improved due to the high switching frequency and the low inductance value of the filter. The operating principle, design considerations, and loss analyses are discussed in detail. A 3.5-kW simulation and experimental prototype interfacing a 350–400-V dc with a three-phase 110-V ac grid is developed to verify the performance of the proposed control strategy.read more
Citations
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Journal ArticleDOI
Novel ZVS S-TCM Modulation of Three-Phase AC/DC Converters
Michael Haider,Jon Azurza Anderson,Spasoje Miric,Neha Nain,Grayson Zulauf,Johann W. Kolar,Dehong Xu,Gerald Deboy +7 more
TL;DR: In this article, a sinusoidal triangular current mode (S-TCM) was proposed for three-phase AC-DC power conversion, where the inductor current reverses polarity before turn-off.
Journal ArticleDOI
Adaptive Hysteresis Current Based ZVS Modulation and Voltage Gain Compensation for High-Frequency Three-Phase Converters
TL;DR: A systematic approach for the control of three-phase bidirectional zero-voltage switching (ZVS) converters is proposed, combining the adaptive hysteresis-band current control and turn-on delay modifications, which achieves a high electromagnetic compatibility.
Journal ArticleDOI
Current Ripple Prediction and DPWM-Based Variable Switching Frequency Control for Full ZVS Range Three-Phase Inverter
TL;DR: A variable switching frequency full zero-voltage switching (ZVS) range bidirectional three-phase voltage-source inverter is proposed and Discontinuous pulsewidth modulation is used so that at any time only two phase legs need to achieve ZVS.
Journal ArticleDOI
ZVS-Interleaved Synchronous Buck DC–DC Converter With a Coupled Inductor by Varying Switching Frequency and Deadtime
TL;DR: In this paper , the authors proposed a fully digital variable switching frequency and deadtime control method for a synchronous rectifier buck dc-dc converter with an inverse coupled inductor, which does not need auxiliary circuits, zero-crossing detection (ZCD), or high-bandwidth sensors.
Journal ArticleDOI
Generalized Space-Vector-Modulation Method for Soft-Switching Three-Phase Inverters
TL;DR: A general ZVS-SVM method for three-phase inverter with arbitrary output is proposed and with only one switching operation of the auxiliary switch in each switching cycle, ZVS of all switches can be achieved.
References
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Review of Battery Charger Topologies, Charging Power Levels, and Infrastructure for Plug-In Electric and Hybrid Vehicles
Murat Yilmaz,Philip T. Krein +1 more
TL;DR: In this paper, the authors present the current status and implementation of battery chargers, charging power levels, and infrastructure for plug-in electric vehicles and hybrid vehicles and classify them into off-board and on-board types with unidirectional or bidirectional power flow.
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Design and control of an LCL-filter-based three-phase active rectifier
TL;DR: In this article, a step-by-step procedure for designing the LCL filter of a front-end three-phase active rectifier is proposed to reduce the switching frequency ripple at a reasonable cost, while at the same time achieving a high-performance front end rectifier.
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A Hybrid AC/DC Microgrid and Its Coordination Control
TL;DR: A hybrid ac/dc micro grid is proposed to reduce the processes of multiple dc-ac-dc or ac-dc-ac conversions in an individual ac or dc grid to maintain stable operation under the proposed coordination control schemes.
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Accurate prediction of ferrite core loss with nonsinusoidal waveforms using only Steinmetz parameters
TL;DR: An improved calculation of ferrite core loss for nonsinusoidal waveforms separates a flux trajectory into major and minor loops via a new recursive algorithm that is highly accurate and outperforms two previous methods for measured data.
Journal ArticleDOI
The resonant DC link converter-a new concept in static power conversion
TL;DR: In this paper, a resonant DC-link inverter was proposed and realized with the addition of only one small inductor and capacitor to a conventional voltage source inverter circuit.