Three-Phase Bidirectional Buck-Boost Current DC-Link EV Battery Charger Featuring a Wide Output Voltage Range of 200 to 1000V

Zhang, Daifei; Guacci, Mattia; Haider, Michael; Bortis, Dominik; Kolar, Johann W.; Everts, Jordi

doi:10.1109/ecce44975.2020.9235868

Cited by 44 publications

(11 citation statements)

References 15 publications

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“…3b); unless otherwise noted, 3/3-PWM indicates using ZMPC third-harmonic injection. Note that the minimum DC-link voltage allowing 3/3-PWM-ZMPC is slightly larger than the theoretical boost-mode boundary of √ 3 Vin = 563 V as stated in [46].…”

Section: Operating Principlementioning

confidence: 81%

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Optimal Synergetic Control of High-Efficiency Three-Phase/Level Boost-Buck Voltage DC-Link Very Wide Output Voltage Range EV Charger

Zhang¹,

Leontaris²,

Huber³

et al. 2023

Preprint

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<p>Universal high-power three-phase mains interfaces for electric vehicle (EV) charging must provide a wide output voltage range (e.g., 200V to 800V) and thus provide buck and boost capability. An advantageous realization combining a three-level (3-L) T-type (Vienna) boost-type PFC voltage-source rectifier (VSR) with a 3-L buck-type DC/DC converter stage is presented in this paper. For high output voltages (boost-mode), the VSR-stage operates with 3/3-PWM, i.e., continuous PWM of all three phases to regulate the output voltage while the DC/DC-stage remains clamped to avoid switching losses. For low output voltages (buck-mode), the DC/DC-stage advantageously controls the DC-link voltage according to a time-varying reference value, which allows to sinusoidally shape the currents of two mains phases, such that the VSR-stage can operate with 1/3-PWM (only one of the three bridge-legs operates with PWM at any given time) with reduced switching losses. This paper proposes a novel 2/3-PWM scheme for the output voltage transition region, where output voltages are between the buck-mode and the boost-mode. This enables loss-optimum operation (i.e., the minimum number of the VSR-stage bridge-legs operating with PWM, and with the minimum possible DC-link voltage) for any output voltage. Furthermore, this paper introduces a new synergetic control concept that ensures seamless transitions between the loss-optimum operating modes. A comprehensive experimental verification, including pre-compliance EMI measurements, using a 10-kW hardware demonstrator with a power density of 5.4kW/L, a peak efficiency of 98.8% at rated power and 560V output voltage, and >98% efficiency for all operating points with >400V output voltage and more than about 50% of rated power, confirms the theoretical analyses.</p>

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Section: Operating Principlementioning

confidence: 81%

“…The converter operates in the buck-mode when V out < 3 /2 Vin = 488 V (see Fig. 3c) [46]. For such low output voltages, the DC/DC-stage must operate.…”

Section: B Buck-modementioning

confidence: 99%

Optimal Synergetic Control of High-Efficiency Three-Phase/Level Boost-Buck Voltage DC-Link Very Wide Output Voltage Range EV Charger

Zhang¹,

Leontaris²,

Huber³

et al. 2023

Preprint

View full text Add to dashboard Cite

show abstract

“…5 The second criterion is the peak value of the current in L σ , which is proportional to the peak value of the magnetic flux in the core of L σ and is thus a measure for the size of the inductor's magnetic core. 6 The third criterion is the switching losses of the primary-side and secondary-side semiconductors, which are calculated based on the measured losses published in [32] and [33], respectively.…”

Section: B Results Of the Numerical Analysismentioning

confidence: 99%

Duty-Cycle Dependent Phase Shift Modulation of Dual Three-Phase Active Bridge Four-Port AC–DC/DC–AC Converter Eliminating Low Frequency Power Pulsations

Heller

Krismer

Kolar

2022

IEEE Open J. Power Electron.

Self Cite

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“…7(b) and adopted by Enercon, Tesla's Supercharger, or the newer ABB Terra 360 [54], [55], [56]. Currently, these three-phase ac-bus-based charging stations prevail as the main solutions, benefiting from mature ac protection and metering technologies [57].…”

Section: Fig 7 Typical Configurations For Off-board DC Charging Stati...mentioning

confidence: 99%

Charging Infrastructure and Grid Integration for Electromobility

et al. 2023

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| Electric vehicle (EV) charging infrastructure will play a critical role in decarbonization during the next decades, energizing a large share of the transportation sector. This will further increase the enabling role of power electronics converters as an energy transition technology in the widespread adoption of clean energy sources and their efficient use. However, this deep transformation comes with challenges, some

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Three-Phase Bidirectional Buck-Boost Current DC-Link EV Battery Charger Featuring a Wide Output Voltage Range of 200 to 1000V

Cited by 44 publications

References 15 publications

Optimal Synergetic Control of High-Efficiency Three-Phase/Level Boost-Buck Voltage DC-Link Very Wide Output Voltage Range EV Charger

Optimal Synergetic Control of High-Efficiency Three-Phase/Level Boost-Buck Voltage DC-Link Very Wide Output Voltage Range EV Charger

Duty-Cycle Dependent Phase Shift Modulation of Dual Three-Phase Active Bridge Four-Port AC–DC/DC–AC Converter Eliminating Low Frequency Power Pulsations

Charging Infrastructure and Grid Integration for Electromobility

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