Digital Average Current-Mode Control Using Current Estimation and Capacitor Charge Balance Principle for DC–DC Converters Operating in DCM

Digital Average Current-Mode Control Using Current Estimation and Capacitor Charge Balance Principle for DC–DC Converters Operating in DCM
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使用电流估计和电容器电荷平衡原理对在 DCM 下运行的 DC-DC 转换器进行数字平均电流模式控制

DOI:
10.1109/tpel.2010.2040089
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发表时间:
2010-01
影响因子:
6.7
通讯作者:
--
中科院分区:
工程技术1区
文献类型:
--
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提出了一种新的数字平均电流模式控制技术,用于直流-直流变换器工作在断续导通模式下。与电感电流的调节不同,本文重点讨论了如何将合适的充电电流直接馈入电容和负载电阻。利用电容充电平衡原理,预测下一个开关周期的充电电流参考,以在瞬态条件下快速驱动输出电压回到其标称值。实际的平均充电电流估计从一个简化的算法,它也可以用来计算所需的占空比根据充电电流参考。该控制技术具有良好的动态性能,并符合数字集成处理器的性能约束。仿真和实验结果证明了该方法的有效性。
A new digital average current-mode control technique is proposed for dc-dc converters operation in discontinuous conduction mode. In contrast to the regulation of inductor current, this paper focuses on how the suitable charge current is feed to capacitor and load resistor directly. Using the principle of capacitor charge balance, the charge current reference in next switching cycle is predicted in order to drive the output voltage back to its nominal value quickly during transient conditions. The actual average charge current is estimated from a simplified algorithm, which can also be used to calculate the required duty ratio according to the charge current reference. This control technique features good dynamic performance and it is compliant with the performance constraints of digital integrated processor. The effectiveness of the proposed solution has been proved by the simulation and experimental results.
DOI: 10.1109/apec.2001.911629
发表时间: 2001-03
期刊: APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181)
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