采用单开关谐振电路的脉冲电源设计

饶俊峰; 吴改生; 王永刚; 姜松; 李孜

doi:10.11884/HPLPB202032.200163

采用单开关谐振电路的脉冲电源设计

doi: 10.11884/HPLPB202032.200163

上海理工大学机械工程学院，上海 200093

基金项目: 国家自然科学基金青年基金项目（51707122）；国家重点研发计划数字诊疗专项（2019YFC0119100）；上海市青年科技英才扬帆计划项目（20YF1431100）

详细信息

作者简介:
饶俊峰（1985－），男，博士，副教授，主要从事全固态高压脉冲发生器和低温等离子体应用等方面的研究工作；jfrao@usst.edu.cn

通讯作者:
王永刚（1989－）,男，博士，讲师，主要从事脉冲功率技术和低温等离子体应用等方面的研究工作；fduwangyg@163.com

中图分类号: TM832
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出版历程
- 收稿日期: 2020-06-12
- 修回日期: 2020-07-30
- 刊出日期: 2020-08-13

Design of pulsed power supply using single switch resonant circuit

School of Mechanical Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China

摘要

摘要: 谐振电路可以实现软开关，减小开关损耗，而广泛应用于电力电子领域。谐振电路工作在特定模式下可以产生脉冲形式电压，相较于其他脉冲发生器拓扑具有开关数量少、低开关损耗和低电磁干扰（EMI）的优点。谐振电路通常需要半桥或全桥转换器产生一个方波激励，本文提出了一种结合脉冲变压器和单开关谐振电路的脉冲电路，主电路只需使用一个半导体开关，便可通过谐振电路和脉冲变压器在副边得到高压脉冲，且可以实现零电流关断（ZCS）。对电路的工作过程进行了理论分析，并搭建了样机进行了带载实验。试验结果表明，在介质阻挡放电（DBD）负载上实现了频率为10～20 kHz、幅值为5～10 kV的正弦脉冲电压。该电路结构简单，成本低，安全可靠。
- 介质阻挡放电 /
- 零电流关断 /
- 谐振转换器 /
- 正弦脉冲
Abstract: The resonant circuit can realize soft switching and reduce switching loss, and is widely used in the field of power electronics. The resonant circuit can generate pulse-shaped voltage in a specific mode. Compared with other pulse generator topologies, it has the advantages of fewer switches, lower switching loss and lower electromagnetic interference (EMI). The resonant circuit usually requires a half-bridge or full-bridge converter to generate a square wave excitation. This paper proposes a pulse circuit that combines a pulse transformer and a single-switch resonant circuit. The main circuit only needs to use a semiconductor switch to produce high voltage pulses via the resonant circuit and the pulse trausformer on the secondary side with zero current switching (ZCS). This paper theoretically analyzes the working process of the circuit, and sets up prototype to carry out the load experiment. The test results show that a sinusoidal pulse voltage with a frequency of 10−20 kHz and an amplitude of 5−10 kV is realized on a dielectric barrier discharge (DBD) load. The pulse circuit has simple structure, stable operation and low cost.
- dielectric barrier discharge /
- zero current switch /
- resonant converter /
- sinusoidal pulse

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图 1 正弦脉冲电路的一般框图

Figure 1. General block diagram of sinusoidal pulse circuit

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图 2 单开关正弦脉冲拓扑

Figure 2. Single-switch of sinusoidal pulse topology

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图 3 电路的部分关键波形

Figure 3. Some key waveforms of the circuit

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图 4 四个工作阶段的电流路径

Figure 4. Current path at each working stage

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图 5 输出电压与谐振电感电流波形

Figure 5. Waveforms of output voltage and resonant inductor current

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图 6 主电路的等效电路

Figure 6. Equivalent circuit of the main circuit

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图 7 电感电流不为零的P1阶段的等效电路

Figure 7. Equivalent circuit in period1 (P1)

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图 8 电感电流为零的P2阶段的等效电路

Figure 8. Equivalent circuit in period2 (P2)

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图 9 不同频率下的输出电压的仿真波形

Figure 9. Simulation waveforms of output voltage at different frequencies

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图 10 ${u}_{{C}_{{\rm{r}}}}$ 的初始系数与电路过冲比的关系图

Figure 10. Initial coefficient of ${u}_{{C}_{{\rm{r}}}}$ and circuit overshoot ratio

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图 11 开关两端的电压波形

Figure 11. Waveforms voltage across the switch

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图 12 加有缓冲电路的主电路

Figure 12. Main circuit with a snubber circuit

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图 13 软开关波形图

Figure 13. Soft switching waveforms

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图 14 不同频率下的谐振电容电压 ${u}_{{C}_{{\rm{r}}}}$ 波形

Figure 14. Waveforms of ${u}_{{C}_{{\rm{r}}}}$ at different frequencies

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图 15 不同频率下的输出电压 ${V}_{{\rm{o}}}$ 波形

Figure 15. Waveforms of ${V}_{{\rm{o}}}$ at different frequencies

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图 16 不同频率下的谐振电感中的电流 ${i}_{{L}_{r}}$ 波形

Figure 16. Waveforms of ${i}_{{L}_{{\rm{r}}}}$ at different frequencies

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图 17 不同频率下的计算与实验的电路过冲比

Figure 17. Calculated and experimental circuit overshoot ratio at different frequencies

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图 18 DBD负载的电压电流波形

Figure 18. Voltage and current waveforms of DBD load

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图 19 放电实物图

Figure 19. A picture of the dielectric barrier discharge (DBD) load in discharging process

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表 1 不同频率下的 $K$ 和 ${V}_{\rm{C}_{r},pk}$ 的理论值与实验值对比

Table 1. Comparison of theoretical and experimental values of $K$ and ${V}_{\rm{C}_{r},pk}$ at different frequencies

${f_{\rm{s}}}$ /kHz	${u_{ {C_{\rm{r}}},0} }/V$	a	K		${V_{ {C_{\rm{r}}},{\rm{pk}}} }/V$
${f_{\rm{s}}}$ /kHz	${u_{ {C_{\rm{r}}},0} }/V$	a	exp.	theo.	exp.	theo	difference
5	6.16	0.30	1.60	1.64	32.0	32.8	2.5%
10	−6.40	−0.32	2.13	2.20	42.6	44.0	3.2%
15	−14.4	−0.72	2.49	2.60	49.4	52.0	4.2%
20	−26.4	−1.32	2.99	3.08	60.0	61.6	2.6%

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