| 引用本文: | 景中炤,黄熙,郑琰,靳巍,郭峰.一种双相结构的同步Buck DC/DC变换器[J].电力自动化设备,2010,(2): |
| .Two-phase synchronous Buck DC/DC converter[J].Electric Power Automation Equipment,2010,(2): |
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| 摘要: |
| 指出了同步降压型直流-直流变换器从拓扑结构上实现软开关技术优点与在大功率场合下电流纹波大的特点,结合电感磁耦合技术将其扩展为双相结构的同步Buck型DC/DC变换器,分析了电感输出电流纹波减小的原理,并对不同负载下电路的工作特点进行了分析,采用可变频率的脉冲宽度调制控制方式以达到不同输出功率时的效率,试制了一台2kW的同步Buck DC/DC变换器样机,并给出了实验结果。变换器采用DSP芯片TMS320F2808作为控制管理芯片,通过积分分离数字PID算法改变控制量,具有较优异的动态性能,在蓄电池维护领域得到较好的应用。 |
| 关键词: 同步降压直流-直流变换器 磁耦合 TMS320F2808 积分分离 变频脉宽调制 |
| DOI： |
| 分类号:TM46 |
| 基金项目: |
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| Two-phase synchronous Buck DC/DC converter |
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JING Zhongzhao1 HUANG Xi2 ZHENG Yan1 JIN Wei1 GUO Feng1
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| Abstract: |
| The advantage of synchronous Buck DC / DC converter in implementing soft-switching by topology is pointed out,as well as its high current ripple in high-power application is indicated. Combined with the magnetic coupling technology,the single-phase synchronous Buck DC / DC converter is expanded into two- phase synchronous Buck DC / DC converter. The principle of reducing the inductor output current ripple is introduced and the operational characteristics are analyzed under different loads. The multi-frequen... |
| Key words: synchronous Buck DC / DC converter magnetic coupling TMS320F2808 integral-separation multi-frequency PWM |
