A General Pulse Width Modulation Method for Zero-Voltage-Switching Active-clamping Three-phase Power Converters: Edge Aligned Pulse Width Modulation (EA-PWM)

Shi, Keyan; Deng, Jiaming; Xu, Dehong

doi:10.1109/ojpel.2020.3011564

Cited by 20 publications

(9 citation statements)

References 24 publications

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“…The efficiency was significantly improved and reached a conversion efficiency of 97.1% at a load of 3 kW. Finally, to further reveal the potential merits of the proposed PWM control scheme, Table 2 is provided to summarize the comparisons of the extra elements, soft switching range, switching frequency, control complexity, switch voltage stress, and current stress as well as the filter design of the literature [2,3,12,13] and the proposed PWM control scheme.…”

Section: Simulation and Experimental Resultsmentioning

confidence: 99%

“…In addition, different PWM strategies for ZVS have been developed. The spacevector pulse-width modulation (SVPWM) control strategy has been utilized for ZVS in the literature [1][2][3]7], and the discontinuous pulse-width modulation (DPWM) control strategy has also been studied to achieve ZVS in the literature [12,13]. However, although there is no additional component added in the circuit [12], the inverter-side current is larger and the current stress on the main switches is higher than that in the literature [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the filter design is more complicated due to the variable switching frequency operation. In [13], in order to unify the PWM methods for soft-switching active-clamping three-phase power converters, the edge-aligned PWM (EA-PWM) was proposed to simplify the control method. Nevertheless, the EA-PWM needs three-phase current sensors to obtain information on the filter's current polarities to achieve ZVS in the active switches.…”

Section: Introductionmentioning

confidence: 99%

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A Novel Carrier Scheme Combined with DPWM Technique in a ZVS Grid-Connected Three-Phase Inverter

2022

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In this paper, a novel switching scheme using discontinuous pulse-width modulation (DPWM) for a zero-voltage switching (ZVS) grid-connected three-phase inverter is proposed. ZVS in the main and auxiliary switches was achieved. Moreover, the reverse recovery currents of the anti-parallel diodes in the main switches were suppressed. A circuit analysis was performed, and a simulation was carried out. Furthermore, a prototype of the ZVS grid-connected three-phase inverter was constructed to verify the effectiveness of the proposed PWM control scheme. Both the simulation and experimental results verified the validity of the proposed PWM control scheme.

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Section: Simulation and Experimental Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Novel Carrier Scheme Combined with DPWM Technique in a ZVS Grid-Connected Three-Phase Inverter

2022

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“…In fact, from the twelve cases in Fig. 3, it is possible to compute the behavior of the inductor current i L , which gives information on the rms current values linked to conduction losses and on the current values at the switching instants to recognize ZVS conditions [7], [33], [38].…”

Section: B Loss Contributionsmentioning

confidence: 99%

“…By substituting (3) in ( 4), ( 4) in ( 5), ( 5) in ( 6), and ( 6) in (7), the currents at the switching instants can be rewritten as:…”

Section: Switching Patterns Analysismentioning

confidence: 99%

A Low Complexity Algorithm for Efficiency Optimization of Dual Active Bridge Converters

Pistollato

Zanatta

Caldognetto

et al. 2021

IEEE Open J. Power Electron.

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This paper proposes a triple phase shift modulation (TPS) with an optimization technique that aims at maximizing the efficiency of the dual active bridge converter. Such a converter is often used to interface renewable or energy storage systems in smart dc power systems, where loss minimization via TPS is crucial, especially at light-load conditions. In this paper, favorable modulation parameters are found first, aiming at minimum rms currents and zero voltage switching, by considering only some fundamental converter parameters, namely, the input and output voltages, the transformer ratio, and the leakage inductance. Then, on the basis of the closed-form analytical description of the converter behavior over the determined modulation patterns, trajectories in the modulation planes that are capable of improving the total efficiency are identified. It is shown that such trajectories lead to close-to-optimal efficiency operation, which can be exploited to implement fast perturb-and-observe methods requiring just minimal converter parameters knowledge. The results are verified experimentally on a 1.5-kW prototype. It is shown that the proposed approach achieves close-to-optimal efficiency operation under different input voltages, being the error with respect to the measured optimal points obtained by a brute-force approach lower than about 0.2%. Index Terms-Dual active bridge (DAB), light-load operation, maximum efficiency point identification, TPS optimization, zero voltage switching (ZVS).

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Introduction

2021

Soft‐Switching Technology for Three‐phase Power Electronics Converters

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A General Pulse Width Modulation Method for Zero-Voltage-Switching Active-clamping Three-phase Power Converters: Edge Aligned Pulse Width Modulation (EA-PWM)

Cited by 20 publications

References 24 publications

A Novel Carrier Scheme Combined with DPWM Technique in a ZVS Grid-Connected Three-Phase Inverter

A Novel Carrier Scheme Combined with DPWM Technique in a ZVS Grid-Connected Three-Phase Inverter

A Low Complexity Algorithm for Efficiency Optimization of Dual Active Bridge Converters

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