The right-half plane (RHP) zero in the control to output voltage transfer function of a boost converter operating in the continuous conduction mode limits the loop bandwidth. By injecting a scaled version of the inductor current into the loop, it is possible to shift the zero from the right-half plane to the left-half plane, which leads to increased stability of the control loop. This solution generates a static voltage error at the output of the converter (tracking error), which may be unacceptable in practical applications. A few strategies to mitigate or correct this tracking error have been suggested. However, they have never been fully assessed. This paper thoroughly investigates the impact of the RHP zero mitigation technique on the dynamic performance of a boost converter, and identifies the complex trade-off between the system stability, transient response, and tracking error correction capability. Based on these findings, design guidelines are provided to help maximize system performance. A representative case study is considered to highlight the performance benefits and simulation results are presented to validate the analysis.

中文翻译：

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通过电感电流检测实现 RHP 零缓解的 CCM 升压转换器的设计问题和性能分析

在连续导通模式下工作的升压转换器的控制到输出电压传递函数中的右半平面 (RHP) 零限制了环路带宽。通过将电感电流的缩放版本注入环路，可以将零从右半平面移到左半平面，从而提高控制环路的稳定性。这种解决方案会在转换器的输出端产生静态电压误差（跟踪误差），这在实际应用中可能是不可接受的。已经提出了一些减轻或纠正这种跟踪误差的策略。然而，他们从未得到充分评估。本文彻底研究了 RHP 零缓解技术对升压转换器动态性能的影响，并确定了系统稳定性、瞬态响应和跟踪纠错能力。根据这些发现，提供了设计指南以帮助最大限度地提高系统性能。一个代表性的案例研究被认为是为了突出性能优势，并提供了模拟结果来验证分析。