EMI Mitigation of a Cuk-Based Power-Electronic System Using Switching-Sequence-Based Control
EMI Mitigation of a Cuk-Based Power-Electronic System Using Switching-Sequence-Based Control
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DOI：
10.1109/tpel.2021.3059906
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发表时间：
2021-09-01
影响因子：
6.7
通讯作者：
Mazumder, Sudip K.
中科院分区：
文献类型：
--
作者：
Chatterjee, Debanjan;Mazumder, Sudip K.
基于拓扑切换行为设计的开关序列控制律对电力电子系统的慢尺度和快尺度动力学都有积极的影响。慢尺度控制可以根据预先设定的目标实现快速的PES状态调节和跟踪，而快尺度控制可以解决与PES切换操作相关的差模（DM）和共模（CM）光谱峰值能量。这种控制律可以为传统的PES设计提供增强的可编程性，传统上使用笨重的电磁干扰（EMI）滤波器来降低开关电源转换器的EMI，以满足EMI监管标准。EMI滤波器始终是一种较难编程的解决方案，因为它通常是为最坏情况下的EMI缓解而设计的，并且对于在减少负载条件下运行的PES通常是过度的。本文概述的控制方案在不影响PES法规的情况下，在广泛的操作区域提供EMI缓解。此外，它通过使用切换序列来保证PES动态的可达性，使用先进的基于李雅普诺夫函数的方法。SBC是一个功能强大的工具，可以基于多变量PES状态约束为PES生成控制动作。因此，当代EMI监管标准被用作SBC配方中的约束，以在广泛的操作制度下操作PES，同时自主减轻EMI水平。这项工作对于GaN-FET和SiC mosfet等超高速跃迁的宽带隙半导体器件在更高的功率和更高的开关频率下工作至关重要，这通常是为了提高功率密度和降低开关损耗而需要的。在这里，一个硬件Cuk-PES与gan - fet操作，并用于案例说明。实验结果表明，SBC可以有效地抑制脉冲功率放大器的DM和CM EMI噪声，即使对于高阶非最小相位脉冲功率放大器也能保持调节，同时利用由脉冲功率放大器开关模型导出的状态观测器降低对传感器的要求。
Switching-sequence-based control (SBC) laws when designed based on topological switching behavior can have positive effects on slow- and fast-scale dynamics of a power-electronic system (PES). The slow-scale control can encompass fast PES state regulation and tracking, based on predefined objective, while fast-scale control can address differential-mode (DM) and common-mode (CM) spectral-peak energy associated with PES switching operation. Such control laws may offer enhanced programmability to conventional PES design where bulky electromagnetic interference (EMI) filters have been traditionally used to reduce EMI of switching power converters to meet EMI regulatory standards. An EMI filter is always a less programmable solution since it is usually designed for the worst-case EMI mitigation and usually overkill for a PES operating under reduced load condition. The control scheme outlined in this article offers EMI mitigation across wide operating regions without compromising PES regulation. Moreover, it does so by use of switching sequences that guarantee the reachability of the PES dynamics using an advanced Lyapunov-function-based approach. SBC is a powerful tool to generate control actions for a PES based on multivariate PES state constraints. Hence, contemporary EMI regulatory standards are used as constraints in the SBC formulation to operate the PES under wide operating regime while autonomously mitigating the EMI levels. The work may be of paramount importance for operating the ultra-fast-transition recent wide-bandgap semiconductor devices like GaN-FET and SiC mosfet under higher power with increasing switching frequencies, which is usually desirable for increased power density and reduced switching losses. Here, a hardware Cuk-PES operated with GaN-FETs is fabricated and is used for case illustration. It is shown by experimental results how SBC mitigate DM and CM EMI noise of the PES while maintaining regulation even for the higher order nonminimum phase PES, while reducing sensor requirements using state observer derived from the switching model of the PES.