An H-Bridge Time-Sharing Multiplexing-Based Power Electronic Transformer

Zhao, Chunting; Zhang, Chunpeng; Jiang, Qirong

doi:10.1109/jestpe.2023.3292839

Cited by 3 publications

(4 citation statements)

References 26 publications

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“…The control block diagram of the three-phase CHB-PET can be constructed based on Equations ( 18)- (21). Figure 6 illustrates the control structure of the preceding circuit.…”

Section: Control Structurementioning

confidence: 99%

“…H-bridge multiplexing is one idea for developing a new CHB-PET, and one study [21] designed a PET based on time-sharing multiplexing by analogy with the time-sharing multiplexing of channels through communication collars. In this paper, under the same idea, a new three-phase CHB-PET topology is proposed, which is shown in Figure 2.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…In this paper, under the same idea, a new three-phase CHB-PET topology is proposed, which is shown in Figure 2. Compared with the topology in [21], the novel structure designed in this paper adopts the idea of frequency division multiplexing and uses a passive network for demodulation, which reduces the difficulty of control. One of the developmental directions of CHB-PET focuses on improving the power density of the entire PET system by reducing the number of power conversion stages, power switching devices, and HFTs [16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

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A H-Bridge-Multiplexing-Based Novel Power Electronic Transformer

Hou,

Li,

et al. 2023

Electronics

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Cascaded H-bridge power electronic transformers (CHB-PET) play a pivotal role in distribution grids and their efficient operation. The input series and output parallel (ISOP) configurations result in a huge number of power switching devices, high-frequency transformers (HFT), and capacitors in high-voltage, high-capacity CHB-PET, leading to the need for high hardware costs and huge-sized CHB-PET, which further poses a significant challenge to the engineering feasibility and marketability of the CHB-PET. To address these issues, a CHB-PET topology is proposed in this paper. The novel topology exploits the concept of multi-frequency modulation to achieve power decoupling and power unit multiplexing through reasonable LC resonant frequency selection, which optimizes the ISOP structure and ultimately reduces the hardware cost and size of the CHB-PET. In this study, the effectiveness of reducing the number of power switching devices and HFT is firstly analyzed, and after describing its working principle, the control strategy of each power conversion link of PET is discussed before the correctness and effectiveness of the CHB-PET topology and control strategy proposed in this paper are verified via simulation.

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“…The control block diagram of the three-phase CHB-PET can be constructed based on Equations ( 18)- (21). Figure 6 illustrates the control structure of the preceding circuit.…”

Section: Control Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A H-Bridge-Multiplexing-Based Novel Power Electronic Transformer

Hou,

Li,

et al. 2023

Electronics

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Wide-Voltage Input Photovoltaic Microgrid System Based on Multi-Port Three-Level Converter

Wang,

Wang

et al. 2024

IEEE Access

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Analysis of Power Electronic Traction Transformer under Non-Single Frequency PWM Control

Hou,

Li,

Teng

2024

Electronics

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In the context of locomotive traction systems, the power electronic traction transformer (PETT) represents a pivotal component, fulfilling essential functions pertaining to electrical isolation and power control. The majority of existing PETT prototypes employ a combination of a cascade structure and an ISOP structure. The aforementioned scheme effectively reduces the voltage withstand level of the power devices on the input side, yet it also necessitates the utilisation of a greater number of power devices and passive components within the PETT. In order to further reduce the number of power devices used, this paper proposes a new cascaded PETT design. The proposed PETT will adopt a scheme combining a cascade structure and a hardware circuit multiplexing. This paper first analyses the operation principle of the new circuit under non-single frequency PWM control. It then derives the design equations for some hardware parameters and control circuits. Finally, it verifies the effectiveness of the proposed PETT through simulation analysis.

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An H-Bridge Time-Sharing Multiplexing-Based Power Electronic Transformer

Cited by 3 publications

References 26 publications

A H-Bridge-Multiplexing-Based Novel Power Electronic Transformer

A H-Bridge-Multiplexing-Based Novel Power Electronic Transformer

Wide-Voltage Input Photovoltaic Microgrid System Based on Multi-Port Three-Level Converter

Analysis of Power Electronic Traction Transformer under Non-Single Frequency PWM Control

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