A Soft-switched isolated Single Stage Bidirectional Three phase AC-DC Converter

Das, Dibakar; Basu, Kaushik

doi:10.1109/ecce.2019.8912481

Cited by 4 publications

(5 citation statements)

References 12 publications

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“…V YB = −V link (18) As shown in case 3 of Figure 9, T 2 is in a high-frequency switching state, and T 5 is normally on. When T 2 is turned on, V BR is equal to V link ; when T 2 is turned off, V BR is equal to 0.…”

Section: Charging and Discharging Control Strategymentioning

confidence: 96%

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Bidirectional Power Control Strategy for On-Board Charger Based on Single-Stage Three-Phase Converter

Sun,

Wang,

2024

Electronics

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To solve the problems of large switching losses and the need for large-capacity electrolytic capacitances in three-phase DC/AC on-board chargers for vehicle-to-grid (V2G) applications, this paper proposes a single-stage bidirectional high-frequency isolated converter that eliminates the need for large-capacity capacitances. Combined with the proposed modulation scheme, it can theoretically reduce the switching loss by about two-thirds with the three-phase converter compared with the conventional modulation scheme, improving the converter’s operating efficiency and power density. Firstly, based on the characteristics of the proposed topology, a hybrid modulation scheme is proposed, which combines a phase-shift modulation scheme based on double modulation waves and a sawtooth carrier with a 1/3 modulation scheme, and the theoretical feasibility of the hybrid modulation scheme is verified using a mathematical modeling equation. Secondly, this paper provides a detailed analysis of the four operating modes of the two full-bridge circuits and the commutation process of the three-phase converter within 1/6 of the fundamental frequency cycle (P1 modulation interval). Then, the control strategy is given for the constant-current and constant-voltage charging and constant-current discharging for electric vehicle batteries. Finally, simulation results verify the correctness of the proposed topology and modulation scheme in vehicle–grid interaction.

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Section: Charging and Discharging Control Strategymentioning

confidence: 96%

“…As shown in case 2 of Figure 8, both T 4 and T 5 are normally on, so V YB can be expressed using (18).…”

Section: Charging and Discharging Control Strategymentioning

confidence: 99%

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Bidirectional Power Control Strategy for On-Board Charger Based on Single-Stage Three-Phase Converter

Sun,

Wang,

2024

Electronics

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“…The bidirectional switches for the AC side are typically realized by two identical devices in common source (emitter, cathode) configuration or the antiparallel reverse blocking switches can be applied. In some cases, the bidirectional switches with the middle connection point can also be used (Figure 4c) (see also [96][97][98][99][100][101][102][103][104][105][106][107]). The classification presented in Figure 5 divides the isolated matrix inverters by the type of the AC side: CSI-or VSI-based.…”

Section: Systematization and Classificationmentioning

confidence: 99%

“…For the high-power applications, the VSI three-phase topologies can also be utilized (Figure 19). References [101,106,[126][127][128] present PV inverter, battery storage and EV charger systems. In those systems, the PSM modulation strategy was used and is extended for the three-phase implementation.…”

Section: Fb Configurationmentioning

confidence: 99%

Review of Isolated Matrix Inverters: Topologies, Modulation Methods and Applications

et al. 2020

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This paper presents a review of isolated matrix inverters. The study contributes to creating a point of reference for a comprehensive classification of existing solutions. Over 30 topologies were reviewed, and the main advantages and disadvantages discussed. Applications of isolated matrix inverters are summarized in a tabular form to demonstrate their flexibility for different power and voltage levels achieved due to the presence of a transformer. These inverters have been proposed for the uninterruptible power supplies, high and low-voltage/power photovoltaic systems, low-power fuel cell, different low- and high-voltage battery and/or electric vehicle chargers, audio amplifiers. The fully controlled switches on both terminals of these converters typically can provide the bidirectional power transfer capability, which is also addressed for most of the topologies, but requires some modification in their modulation strategy. Average efficiency of today’s isolated matrix inverters is comparable with the two-stage power converters; however, they can provide higher reliability and lower cost.

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High-Efficiency Single-Stage Single-Phase Bidirectional PFC Converter for Plug-In EV Charger

Patel,

Lopes,

Rathore

et al. 2024

IEEE Trans. Transp. Electrific.

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A Soft-switched isolated Single Stage Bidirectional Three phase AC-DC Converter

Cited by 4 publications

References 12 publications

Bidirectional Power Control Strategy for On-Board Charger Based on Single-Stage Three-Phase Converter

Bidirectional Power Control Strategy for On-Board Charger Based on Single-Stage Three-Phase Converter

Review of Isolated Matrix Inverters: Topologies, Modulation Methods and Applications

High-Efficiency Single-Stage Single-Phase Bidirectional PFC Converter for Plug-In EV Charger

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