Journal ArticleDOI
A Motor-Friendly Quasi-Resonant DC-Link Inverter With Lossless Variable Zero-Voltage Duration
J. Kedarisetti,P. Mutschler +1 more
TLDR
In this paper, two quasi-resonant dc-link (QRDCL) inverter topologies are discussed for motor-friendly application, and a new motorfriendly QRDCL inverter with lossless variable zero-voltage duration is proposed.Abstract:
Two quasi-resonant dc-link (QRDCL) inverter topologies are discussed for motor-friendly application. For the control of an inverter, a modified space-vector pulsewidth modulation is implemented, which requires only two resonant cycles per switching period and helps in better utilization of dc-link voltage. The first topology is tested experimentally with a 34-m-long cable connected between inverter and induction machine for reduced voltage overshoot at motor-side cable end and common-mode (CM) voltage. Even though results are satisfying, a freewheeling interval of this topology produces high losses. So a new motor-friendly QRDCL inverter with lossless variable zero-voltage duration is proposed. In this topology, during a zero-voltage interval, energy is stored in a capacitor rather than an inductor. No current is freewheeling through inverter switches, and it clearly helps in reducing the losses under a low-modulation index region. Simulation results are presented to verify the validity of the proposed inverter and its motor-friendly characteristics.read more
Citations
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Journal ArticleDOI
Research on a Novel Modulation Strategy for Auxiliary Resonant Commutated Pole Inverter With the Smallest Loss in Auxiliary Commutation Circuits
TL;DR: In this article, a novel modulation strategy based on an improved ARCP inverter was proposed to realize soft-switching for all switches and avoid the superposition of resonance current and load current at commutation moments in ACCs and make the maximum current through ACCs approximately equal to load current in commutation processes.
Journal ArticleDOI
Modified Double Auxiliary Resonant Commutated Pole Inverter and its Modulation Strategy
TL;DR: In this article, a modified DARCP inverter topology and its modulation strategy are proposed to overcome the complexity of the double auxiliary commutation circuit and the coupling of the resonance process of the Double Auxiliary Resonant Commutated Pole (DARCP) inverter.
Journal ArticleDOI
Flexible-Voltage DC-Bus Operation for Reduction of Switching Losses in All-Electric Ship Power Systems
TL;DR: In this article, a novel approach to voltage control in all-electric ship shipboard power systems (SPSs) is proposed to fulfill these goals, in contrast to the traditional SPSs that emulate the land-based electricity grid, maintaining a steady bus voltage is no longer an objective here.
Journal ArticleDOI
A Soft-Switched High-Frequency Link Single-Stage Three-Phase Inverter for Grid Integration of Utility Scale Renewables
Anirban Pal,Kaushik Basu +1 more
TL;DR: A novel single-stage high-frequency link three-phase inverter along with a modulation strategy for grid integration of utility scale renewable and alternative energy sources like solar, fuel cell, and wind, where the power flow is unidirectional.
Journal ArticleDOI
Reducing Common-Mode Voltage and Bearing Currents in Quasi-Resonant DC-Link Inverter
Marek Turzyński,Piotr J. Chrzan +1 more
TL;DR: In this paper, a parallel quasi-resonant dc-link inverter (PQRDCLI) was proposed to limit high-frequency common-mode voltage and bearing currents.
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