图腾柱双有源桥AC-DC变换器的非对称扩展移相优化调制策略

doi:10.19595/j.cnki.1000-6753.tces.240510

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (7325 KB) HTML
输出: BibTeX | EndNote (RIS)

摘要单级式图腾柱双有源桥AC-DC变换器具有元件数量少、功率密度高和成本低等优点,在车载充电机等领域具有广阔的应用前景。然而,现有的单移相和扩展移相调制策略由于存在调制自由度不足的问题,而无法对变换器进行多目标的优化,使图腾柱双有源桥AC-DC变换器在并网电流质量和效率等稳态性能方面仍有提升空间,限制了该变换器在车载充电机中的进一步应用。首次,该文在扩展移相调制策略的基础上引入非对称调制,从而提出具有三个自由度的非对称扩展移相调制策略。其次,对变换器在非对称扩展移相调制下所有可能的工作模式进行分析,并借助时域分析法建立各工作模式的时域稳态分析模型。然后,考虑控制传输功率以实现功率因数校正的同时,进行电感电流初值和峰峰值的多目标优化调制策略求解。最后,相比传统的单移相和扩展移相调制策略,所提出的非对称扩展移相优化调制策略大幅度提升了变换器的稳态性能：并网电流的质量显著提升,峰值效率提升超过5%和1.5%。所提理论分析和优化结果都在仿真和实验中得到了验证。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	余城洋
	李佳
	晏益朋
	牟迪
	罗全明

关键词 ：图腾柱双有源桥, AC-DC变换器, 非对称扩展移相调制, 功率因数校正, 优化调制策略

Abstract：The single-stage Totem pole dual active bridge (DAB) AC-DC converter has the advantages of low component count, high power density, and low cost, which has a broad application prospect in the field of on-board chargers (OBC). However, in the available research, the traditional single phase shift (SPS) and extended phase shift (EPS) modulation strategies are unable to optimize the quality of grid-connected current and efficiency of the Totem pole DAB AC-DC converter at the same time due to the problem of insufficient modulation degrees of freedom, limiting the further application in on-board chargers.
This paper introduces the asymmetric modulation based on the extended phase shift modulation strategy when the duty cycle of the secondary side switching tubes is no longer 50%. An asymmetric extended phase shift (AEPS) modulation strategy with three degrees of freedom is proposed. Accordingly, a multi-objective optimal modulation strategy is solved by considering the simultaneous optimization of the grid-connected current quality and efficiency of the Totem pole DAB AC-DC converter.
Firstly, the steady-state analytical model of AEPS modulation is established by using the time domain analysis method. The initial value decoupling constraint of the inductor current is considered to optimize the quality of grid-connected current, and the peak-to-peak inductor current is taken as the optimization objective. According to the Lagrange algorithm and Karush Kuhn Tucker conditions, the above multi-objective optimization problem is transformed into mathematical equations to solve the optimization solution of modulation variables. Matlab simulations show that the inductor current’s initial value decoupling and peak-to-peak value optimization are realized under the AEPS optimization modulation strategy. Compared with the SPS and EPS modulation, the proposed AEPS optimization modulation strategy reduces the peak-to-peak and RMS levels of the inductor current in the full power band, which reduces the conduction loss of the converter. Moreover, the optimized solutions in different operating modes under APES modulation are continuous, making seamless switching between different operating modes available.
An experimental prototype of a totem pole DAB AC-DC converter with a rated power of 800 W is constructed. Experimental results show that the converter achieves a peak efficiency of 93.5% under the proposed AEPS optimized modulation strategy, 5% and 14.7% higher than the SPS strategy at full load and light load, respectively; 1.5% and 14.7% higher than the EPS modulation strategy at full load and light load, respectively. The converter's grid-connected current THD is significantly reduced in the full power range, improving its grid-connected current quality. Simulation and experimental results verify the effectiveness of the proposed AEPS-optimized modulation strategy.

Key words： Totem pole dual active bridge (DAB) AC-DC converter asymmetric extended phase shift (EPS) modulation power factor correction modulation strategy optimization

收稿日期: 2024-04-01

PACS:

TM46

基金资助:国家自然科学基金资助项目（52177170）

通讯作者: 罗全明男,1976年生,教授,博士生导师,研究方向为电力电子拓扑及控制、电力电子数字设计、宽禁带器件特性及应用等。E-mail: lqm394@126.com

作者简介: 余城洋男,1998年生,硕士研究生,研究方向为高效双向AC/DC功率变换器的优化设计。E-mail: 202111021094t@stu.cqu.edu.cn

引用本文:

余城洋, 李佳, 晏益朋, 牟迪, 罗全明. 图腾柱双有源桥AC-DC变换器的非对称扩展移相优化调制策略[J]. 电工技术学报, 2025, 40(8): 2560-2572. Yu Chengyang, Li Jia, Yan Yipeng, Mou Di, Luo Quanming. Asymmetric Extended Phase Shift Optimized Modulation Strategy for Totem Pole Dual Active Bridge AC-DC Converter. Transactions of China Electrotechnical Society, 2025, 40(8): 2560-2572.

链接本文:

https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.240510 https://dgjsxb.ces-transaction.com/CN/Y2025/V40/I8/2560

[1] Yilmaz M, Krein P T.Review of battery charger topologies, charging power levels, and infrastructure for plug-in electric and hybrid vehicles[J]. IEEE Transactions on Power Electronics, 2013, 28(5): 2151-2169.
[2] 晏益朋, 余城洋, 熊露婧, 等. 一种基于离散时域模型的单相PWM整流器控制参数多目标优化设计方法[J]. 电工技术学报, 2024, 39(1): 206-216.
Yan Yipeng, Yu Chengyang, Xiong Lujing, et al.A multi-objective controller parameter design optimi-zation method of single-phase PWM rectifierwith discrete-time domain model[J]. Transactions of China Electrotechnical Society, 2024, 39(1): 206-216.
[3] Li Bin, Li Qiang, Lee F C, et al.A high-efficiency high-density wide-bandgap device-based bidirectional on-board charger[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2018, 6(3): 1627-1636.
[4] Wang Huai, Blaabjerg F.Reliability of capacitors for DC-link applications in power electronic converters-an overview[J]. IEEE Transactions on Industry Applications, 2014, 50(5): 3569-3578.
[5] Jeong Y S, Lee S H, Jeong S G, et al.High-efficiency bidirectional grid-tied converter using single power conversion with high-quality grid current[J]. IEEE Transactions on Industrial Electronics, 2017, 64(11): 8504-8513.
[6] Everts J, Krismer F, Van den Keybus J, et al. Optimal ZVS modulation of single-phase single-stage bidire-ctional DAB AC-DC converters[J]. IEEE Transa-ctions on Power Electronics, 2014, 29(8): 3954-3970.
[7] Weise N D, Castelino G, Basu K, et al.A single-stage dual-active-bridge-based soft switched AC-DC con-verter with open-loop power factor correction and other advanced features[J]. IEEE Transactions on Power Electronics, 2014, 29(8): 4007-4016.
[8] Zhang Yun, Yang Gen, Li Jing, et al.A modulation scheme with full range ZVS and natural power factor correction for bridgeless single-stage isolated AC-DC converter[J]. IEEE Transactions on Power Electronics, 2023, 38(1): 195-205.
[9] 刘猛, 孙孝峰, 王洪龙, 等. 一种新型单级隔离型AC-DC变换器研究[J]. 中国电机工程学报, 2023, 43(7): 2802-2814, 28.
Liu Meng, Sun Xiaofeng, Wang Honglong, et al.Research on novel single-stage isolated AC-DC converter[J]. Proceedings of the CSEE, 2023, 43(7): 2802-2814, 28.
[10] 邓丹阳, 陈艳慧. 双有源桥直流变换器三电平扩展移相控制下电感电流有效值最优跟踪控制策略[J]. 电工技术学报, 2024, 39(18): 5800-5815.
Deng Danyang, Chen Yanhui.Optimal tracking control strategy of inductive current RMS for dual active bridge dc converter with three-level extended phase-shift control[J]. Transactions of China Elec-trotechnical Society, 2024, 39(18): 5800-5815.
[11] Mou Di, Luo Quanming, Li Jia, et al.Five-degree-of-freedom modulation scheme for dual active bridge DC-DC converter[J]. IEEE Transactions on Power Electronics, 2021, 36(9): 10584-10601.
[12] 刘赞, 沙金, 邱高峰, 等. 多级离散扩展移相控制双有源桥DC-DC变换器的原理、参数设计与性能[J]. 电工技术学报, 2024, 39(12): 3761-3773.
Liu Zhan, Sha Jin, Qiu Gaofeng, et al.Principle, parameter design and performance of multistage discrete extended-phase-shift control dual active bridge DC-DC converters[J]. Transactions of China Electrotechnical Society, 2024, 39(12): 3761-3773.
[13] Sha Deshang, Zhang Debin, Zhang Jiankun.A single-stage dual-active-bridge AC-DC converter employing mode transition based on real-time calculation[J]. IEEE Transactions on Power Electronics, 2021, 36(9): 10081-10088.
[14] Li Xiaoguang, Wu Fengjiang, Yang Guijie, et al.Improved modulation strategy for single-phase isolated quasi-single-stage AC-DC converter to improve current characteristics[J]. IEEE Transactions on Power Electronics, 2020, 35(4): 4296-4308.
[15] Singh A, Yadav A K, Khaligh A.Steady-state modeling of a dual-active bridge AC-DC converter considering circuit nonidealities and intracycle transient effects[J]. IEEE Transactions on Power Electronics, 2021, 36(10): 11276-11287.