Analysis of Carrier-Based PWM Patterns for a Three-Phase Five-Level Bidirectional Buck$+$Boost-Type Rectifier

Ries, Lisandra Kittel; Soeiro, Thiago Batista; Ortmann, Marcio S.; Heldwein, Marcelo Lobo

doi:10.1109/tpel.2016.2619161

Cited by 19 publications

(3 citation statements)

References 18 publications

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“…The output voltage of buck type APFC is lower than the peak value of the input voltage, which is more convenient to choose the semiconductors of the after-stage circuit than the boost one, and benefits the cost reduction of the system [1,2]. Besides, many applications, loads with typically tens of kilowatts, or more, are supplied from a dc bus with ≈400 V that is powered from the conventional threephase ac mains with 380 or 480 Vrms line-to-line voltage [3][4][5][6][7]. Hence, Buck-type PFC rectifiers allow a direct conversion from the three-phase ac mains to a dc bus with lower voltage, that offers potentially lower cost.…”

Section: Introductionmentioning

confidence: 99%

Design and Experiment of a Three Phase Two Switches Voltage Clamping Buck PFC

Zhao

Song

et al. 2023

IEEJ Transactions Elec Engng

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A new three-phase two-switch voltage clamping buck Power Factor Correction (PFC) is presents in this paper. The principle and equations of operations are described in detail. Based on the volt-second balance principle of input inductance in the new converter, this paper gives the design method of the circuit's key components, with voltage and current stresses analyzed. On the basis of the theory above, a prototype with parameters of a 5 kW is designed. Problems of extremely high switch peak voltage stress in the conventional one are solved. The manufacturing cost of high power three phase rectifier has been significantly decreased. A 5 kW experimental prototype with unity power factor, 4.4% input line current THD, 200 Vdc output, and system efficiency of 96% at full load under 380 Vrms input line-to-line voltage has been successfully implemented.

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Section: Introductionmentioning

confidence: 99%

Design and Experiment of a Three Phase Two Switches Voltage Clamping Buck PFC

Zhao

Song

et al. 2023

IEEJ Transactions Elec Engng

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“…Another option to reduce size is to use interphase transformers (IPTs) at the 3-level CSRs dc-ports to limit the circulating current among them in the 5-level structure [1], [5], [9]- [11]. This power structure is seen in Figure 1 and its operation is reported in [12]. The advantage of interphase transformers over two loosely coupled inductors or two independent inductors is that the IPTs cores ideally are only subjected to ac flux and the component does not store energy.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization Approach for the Magnetic Components of a Five-Level Current Source Rectifier

Ries¹,

Heldwein²

2021

Eletrônica de Potência

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This work presents a design and optimization method of the five-level current source converter magnetics components, this is a contribution of this work, since the magnetics volume information of this topology lacks in the literature. The magnetics components are: the interphase transformers, the input and the output filter inductors. The converter volume is minimized when the magnetic components multi-domain optimization is done. The inductance values are defined with given constraints such as Electromagnetic Compatibility standards for differential mode filters, conduction and switching losses of the semiconductors and maximum current variation. This optimization is shown for two different converter switching frequencies: 45 kHz and 150 kHz. The copper losses, iron losses and temperature rise are calculated and used for selecting the smallest volume of each magnetic component with given specifications. A 6-kW prototype with the optimized magnetics was constructed.

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“…The delta-type current-source rectifier is designed in [10] to reduce the conduction loss in traditional current-source rectifiers [11], [13]. Although single-stage buck-type rectifiers are able to realize the voltage step-down directly, some technologies may suffer from a more complex modulation operating logic requiring overlap-time between the semiconductor bridge because of the impressed output current [8], [9], [11], [16]. Several circuit technologies of single-stage buck-type rectifiers will display limited power factor range [5]- [10].…”

mentioning

confidence: 99%

A Carrier-Based Two-Phase-Clamped DPWM Strategy With Zero-Sequence Voltage Injection for Three-Phase Quasi-Two-Stage Buck-Type Rectifiers

Soeiro

et al. 2022

IEEE Trans. Power Electron.

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A three-phase buck-type rectifier features a stepdown ac-dc conversion function, which is considered as a prominent solution for electric vehicles chargers and telecommunication systems integrated to the grid above 380 V line-toline. However, traditional solutions for those applications employ cascaded architectures with an ac-dc Boost-type stage and a dc-dc Buck-type stage which may suffer from high switching losses and large dc-link capacitor volume. To relieve this issue, a straightforward carrier-based two-phase clamped DPWM strategy with generalized zero-sequence voltage injection is proposed in this work for the commonly employed cascaded circuit. This method can stop the switching actions in the front-end stage during twothirds of the grid period, which can yield to the best switching loss reduction. The operation of the front-and back-end converter stages become highly coupled to each other, which reduces the size requirement of capacitor in the dc-link. Therefore the equivalent circuit behaves as a quasi-two-stage buck-type rectifier allowing an enhancement of the system power density by improving power conversion efficiency and by reducing the volume of passive components and heatsink. The proposed carrier-based twophase clamped DPWM strategy is described, analyzed, validated, and compared with different PWM methods on PLECS based simulation and a 5 kW prototype.

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Analysis of Carrier-Based PWM Patterns for a Three-Phase Five-Level Bidirectional Buck$+$Boost-Type Rectifier

Cited by 19 publications

References 18 publications

Design and Experiment of a Three Phase Two Switches Voltage Clamping Buck PFC

Design and Experiment of a Three Phase Two Switches Voltage Clamping Buck PFC

Design and Optimization Approach for the Magnetic Components of a Five-Level Current Source Rectifier

A Carrier-Based Two-Phase-Clamped DPWM Strategy With Zero-Sequence Voltage Injection for Three-Phase Quasi-Two-Stage Buck-Type Rectifiers

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