Modulation Schemes With Enhanced Switch Thermal Distribution for Single-Phase AC–DC–AC Reduced-Switch Converters

Qin, Zian; Loh, Poh Chiang; Blaabjerg, Frede

doi:10.1109/tpel.2015.2451733

Cited by 18 publications

(4 citation statements)

References 26 publications

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“…2 and 3 are proposed in [4] and [5], respectively. It should be noted that the dual-output inverters can also be utilized as ac-ac power converters [6]- [9] and a single-phase power decoupling [10], [11]. In Fig.…”

Section: Introductionmentioning

confidence: 99%

A new single-phase six-switch dual-output buck-boost inverter

Akbar¹,

Elgenedy²,

Elkhateb³

2022

IET Conf. Proc.

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In this article, a new single-phase reduced-switch-count inverter is proposed. The proposed inverter can supply energy independently to two ac loads and is capable of both stepping up and stepping down the input voltage. A detailed pulse-width modulation strategy is presented for the proposed inverter, which can generate both equal-frequency and different-frequency output voltages simultaneously. Finally, simulations are performed in PSIM, and the waveforms are provided, which verify the functionality of the proposed topology.

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Section: Introductionmentioning

confidence: 99%

A new single-phase six-switch dual-output buck-boost inverter

Akbar¹,

Elgenedy²,

Elkhateb³

2022

IET Conf. Proc.

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“…It is essential to design the three-phase to single-phase power conversion with the double-stage AC-DC-AC converter for the generator in the standalone power system, and it is the most industrially established topology composed of a front-end rectifier, DC-link capacitors, an inverter and an LC filter, and decoupled control process could be obtained to achieve the control structure simplicity and flexibility. However, the bulky life-cycle electrolytic capacitor implemented for the power fluctuation mitigation degrades the reliability of the system, and the volume and weight of the inductor of the LC filter are relatively large and heavy [5][6][7][8][9]. Furthermore, the two-stage power conversion also reduces the efficiency of power conversion and increases the cost of the standalone power system.…”

Section: Introductionmentioning

confidence: 99%

The output performance of high power quality three‐phase to single‐phase AC power generation system based on open‐winding PMSG for standalone power system

Wei

Wang

Guo

et al. 2021

IET Electric Power Appl

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A three-phase to single-phase direct AC power generation system based on the openwinding permanent magnet synchronous generator (PMSG) with the dual-inverter is proposed in this study for the standalone power system. The negative DC terminals of the dual-inverter are commonly connected, and the positive DC terminals are reconstructed as the output port of the single-phase AC power; the three-phase AC power generated by PMSG could be converted to be the high power quality single-phase AC power directly without any LC filters. Different from the traditional OW-PMSG system, zero-sequence current is employed to achieve adjustable frequency and voltage of the single-phase AC power, and the corresponding dual voltage-loop control strategy with the separate positive-sequence and zero-sequence currents regulation of PMSG is given to achieve high output performance. The effectiveness of the proposed control strategy and the output characteristics have been verified by simulation and the experiment of the prototype, and the results show that the high-quality single-phase AC power can be obtained at a wide speed range and at different load operating conditions.

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“…The single-phase ac-dc-ac conversion can be performed by using the traditional four-leg (eight switches) topology. There are some works in the literature in which topologies with reduced switches count are proposed as single-phase load suppliers [19,[30][31][32][33]. The three-leg (six switches) converter, as shown in Fig.…”

Section: Introductionmentioning

confidence: 99%

“…1a and denoted in this paper as 3L1D, i.e. three legs and one dc-link, is developed in many ways [19,31,33]. The converter 3L1D is quite interesting because, when compared with the four-leg topology, it uses two switches less and can generate lower power losses by using a shared leg between grid and load.…”

Section: Introductionmentioning

confidence: 99%

Single‐phase ac–dc–ac topology for grid overvoltage and voltage harmonic mitigation

Maia

Jacobina

2017

IET Power Electronics

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A single-phase ac-dc-ac topology to improve power quality is proposed in this study. This configuration is obtained from the addition of a floating capacitor H-bridge converter on the grid side of the conventional ac-dc-ac three-leg topology. The role of the structure is not only to ensure regulated load voltage with fixed amplitude and frequency, grid current with low harmonic content and unitary power factor, but also to mitigate fundamental overvoltage and voltage harmonics at the grid. As a consequence, the proposed topology is suitable to operate as unified power quality compensator or uninterrupted power supply. It does not use isolation transformer and is capable of generating multilevel input voltages due to the cascaded H-bridge. The operation with asymmetrical dc-link voltages is considered to increase the number of voltage levels and reduce the harmonic content of the generated input voltages. Two pulse-width modulation techniques and a control system are developed to regulate the dc-link voltages and to decrease the harmonic distortion (HD), lowering the switching stress and also the power losses. The proposed configuration is compared with the conventional one with respect to HD and semiconductor losses. Simulated and experimental results are presented for validation purposes.

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Modulation Schemes With Enhanced Switch Thermal Distribution for Single-Phase AC–DC–AC Reduced-Switch Converters

Cited by 18 publications

References 26 publications

A new single-phase six-switch dual-output buck-boost inverter

A new single-phase six-switch dual-output buck-boost inverter

The output performance of high power quality three‐phase to single‐phase AC power generation system based on open‐winding PMSG for standalone power system

Single‐phase ac–dc–ac topology for grid overvoltage and voltage harmonic mitigation

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