浮空器电源电流均衡非谐振线性软开关直流升压变换拓扑

胡肖飞; 李虹; 曾洋斌; 苏文哲; 徐国宁

doi:10.13700/j.bh.1001-5965.2022.1023

浮空器电源电流均衡非谐振线性软开关直流升压变换拓扑

doi: 10.13700/j.bh.1001-5965.2022.1023

1.
北京交通大学电气工程学院，北京 100044
2.
清华大学电机工程与应用电子技术系，北京 100084
3.
中国科学院空天信息创新研究院，北京 100094

基金项目:

国家自然科学基金优秀青年基金(51822701)；国家自然科学基金重点项目(52237008)

详细信息

通讯作者:
E-mail：hong_li@zju.edu.cn

中图分类号: TM46
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- 被引次数: 0
出版历程
- 收稿日期: 2022-12-31
- 录用日期: 2023-05-10
- 网络出版日期: 2023-05-31
- 整期出版日期: 2025-08-31

A non-resonant linear soft-switching DC-DC step-up conversion topology featuring current balancing for aerostat power systems

1.
School of Electrical Engineering，Beijing Jiaotong University，Beijing 100044，China
2.
Department of Electrical Engineering，Tsinghua University，Beijing 100084，China
3.
Aerospace Information Research Institute，Chinese Academy of Sciences，Beijing 100094，China

Funds:

The Excellent Youth Scholars of National Natural Science Foundation of China (51822701); The Key Program of National Natural Science Foundation of China (52237008)

More Information

Corresponding author: E-mail：hong_li@zju.edu.cn

摘要

摘要:
临近空间浮空器在通信保障、地质勘探、科学实验等领域得到广泛应用，其电能变换设备因特殊的应用场景，要求具有高效、小型化和轻量化特征，又因浮空器电源中光伏电池的输出侧端口电压较低，直流母线电压较高，研制高效率、高功率密度和高电压增益的直流变换器对临近空间浮空器电源至关重要。在此技术背景下，基于可以实现高增益的箝位电容变换器和非谐振软开关技术，提出一种新型电流均衡非谐振线性(NRL)软开关直流升压变换拓扑。所提拓扑能够实现所有开关管的零电流(ZCS)开通和所有二极管的ZCS关断，同时能够消除因电容充放电导致的器件电流尖峰。通过仿真和硬件试验验证了所提拓扑的有效性和正确性，为临近空间浮空器电源中直流升压电能变换提供了一种新的拓扑选择。
- 浮空器电源 /
- 直流升压变换器 /
- 非谐振线性软开关技术 /
- 高增益 /
- 拓扑
Abstract:
Applications for near-space aerostats are numerous and include scientific experiments, geological exploration, and communication support. The power conversion equipment in these systems must have characteristics like high efficiency, miniaturization, and lightweight construction because of their particular operating environment. The significance of creating a DC-DC converter with high efficiency, high power density, and high voltage gain is highlighted by the low output voltage of the solar cell in the aerostat power system and the high voltage of the DC bus. Thus, using a high gain clamping capacitor converter and non-resonant soft-switching approaches, this work suggests a novel non-resonant linear (NRL) soft-switching DC-DC step-up converter with current balancing. The suggested converter can eliminate the device current spike brought on by charging and discharging capacitors by implementing zero-current-switching (ZCS) turn-on of switches and ZCS turn-off of diodes. Finally, the validity and correctness of the proposed converter are verified by simulation and experiment, which provides a novel topology choice for DC-DC step-up converter in near-space aerostat power systems.
- aerostat power systems /
- DC-DC step-up converters /
- non-resonant linear soft-switching techniques /
- high gain /
- topology

HTML全文

图 1 IB-CCS-Ⅱ 变换器构造方法^[23]

Figure 1. Construction method of IB-CCS-Ⅱ converter^[23]

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图 2 IB-CCS-Ⅱ 和扩展 IB-CCS-Ⅱ 变换器

Figure 2. IB-CCS-Ⅱ and extended IB-CCS-Ⅱ converters

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图 3 NRL软开关的一般性电路结构^[27]

Figure 3. General circuit structures of the NRL soft-switching^[27]

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图 4 构造过程、拓扑结构及参考方向

Figure 4. Constructive processes and topologies and reference directions

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图 5 NRL软开关在CCM下的理论波形

Figure 5. Theoretical waveforms of NRL soft-switching under the CCM condition

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图 6 6个工作模态的电流环路和流向

Figure 6. Current loop and flow direction of six operation modes

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图 7 所提变换器电压增益曲线

Figure 7. Voltage gain curve of the proposed converter

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图 8 IB-CCS-Ⅱ拓扑的关键仿真波形

Figure 8. Key simulation waveforms of IB-CCS-Ⅱ topology

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图 9 样机试验平台

Figure 9. Prototype experimental platform

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图 10 IB-CCS-Ⅱ拓扑的关键试验波形

Figure 10. Key experimental waveforms of IB-CCS-Ⅱ topology

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图 11 IB-CCS-Ⅱ拓扑的样机功率损耗分析

Figure 11. Prototype power loss analysis of IB-CCS-Ⅱ topology

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图 12 IB-CCS-Ⅱ拓扑的效率曲线

Figure 12. Efficiency curve of IB-CCS-Ⅱ topology

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表 1 电流均衡NRL软开关直流升压变换拓扑的电气参数

Table 1. Electric parameters of NRL soft-switching DC-DC step-up converter featuring current balancing

参数	数值
输入电压V_in/V	30
输出电压V_o/V	400
输出功率P_o/W	400
开关频率f_s/kHz	200
负载R_L/Ω	400
电容C₁，C₂，C_o，C_e/μF	20
辅助电感L_a1，L_a2/μH	5
电感L₁，L₂/µH	500

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表 2 不同软开关交错型直流升压变换器对比

Table 2. Comparison of different soft-switching interleaved boost-type converters

软开关直流升压变换器	实现软开关的额外器件	开关管S 开通方式	开关管S 关断方式	二极管D 开通方式	二极管D 关断方式	是否存在谐振电流尖峰
传统的谐振软开关交错型直流升压变换器^[28]	L_r1, L_r2, C_r1, C_r2,	ZCS	硬关断	ZVS	ZVS	是
具有辅助电感的软开关交错型直流升压变换器^[29]	L_r1, L_r2, L_r3, L_r4	ZVS	硬关断	硬开通	ZCS	是
具有耦合电感的软开关交错型直流升压变换器^[30]	L_p1, L_s1, L_k1, L_p2, L_s2, L_k2	ZVS	硬关断	ZCS	ZCS	否
具有耦合电感的软开关交错型直流升压变换器^[31]	L_p1, L_s1, L_k1, L_p2, L_s2, L_k2	ZVS	硬关断	ZVS	ZCS	否
所提电流均衡NRL软开关IB-CCS-Ⅱ直流升压变换器	L_a1, L_a2	ZCS	硬关断	硬开通	ZCS	否

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