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Analytical tuning of 2‐DOF smith predictor control scheme for DC‐DC boost converter: A process control perspective
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2021-02-18 , DOI: 10.1002/cta.2966 P. Shruti 1 , Y. G. Praveen 2 , C. P. Vipin 3 , B. C. Babu 4
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2021-02-18 , DOI: 10.1002/cta.2966 P. Shruti 1 , Y. G. Praveen 2 , C. P. Vipin 3 , B. C. Babu 4
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Stringent voltage regulation in a DC‐DC boost converter is a classical engineering problems in theory of power conversion. Voltage Mode Control (VMC) of boost converter is difficult for two principal reasons. First and foremost, of these two reasons, is the converter's non‐minimum phase (NMP) behavior that arises due to the presence of the dynamic right half plane zero (RHPZ) in control to output (c2o) transfer function in VMC. Second reason is the presence of parametric uncertainties** Parametric uncertainties play decisive role in degrading the loop bandwidth. This leads to poor transient response
in converter during its continuous conduction mode (CCM) operation. This paper combines theory of smith predictor with boost converter for (i) analytically computing gains of PID controller, (ii) design of a low pass filter to deal with challenges posed by dynamic RHPZ. This two degrees of freedom (2‐DOF) control scheme is analytically derived as a function of the converter's parameters. Gains of PID controller, deduced in terms of circuit's parameter, are used in sequel for extensive simulation analysis of the converter's control loop. Results in this paper establish that the proposed 2‐DOF‐SP outperforms certain well known control schemes used in regulating output voltage and disturbance attenuation in boost converter.
中文翻译：
DC-DC升压转换器的2DOF史密斯预测器控制方案的分析调整：过程控制的观点
DC-DC升压转换器中严格的电压调节是功率转换理论中的经典工程问题。升压转换器的电压模式控制（VMC）困难，主要有两个原因。这两个原因中的第一个也是最重要的一点是，转换器的非最小相位（NMP）行为是由于在VMC中控制输出到（c 2 o）的传递函数中存在动态右半平面零（RHPZ）而引起的。第二个原因是存在参数不确定性**参数不确定性在降低环路带宽方面起着决定性的作用。这导致不良的瞬态响应
在转换器的连续导通模式（CCM）运行期间 本文将史密斯预测器理论与升压转换器相结合，用于（i）分析计算PID控制器的增益，（ii）设计低通滤波器以应对动态RHPZ带来的挑战。根据转换器参数的分析得出这两个自由度（2-DOF）控制方案。PID控制器的增益（根据电路的参数得出）在后续工作中用于对变频器的控制环进行广泛的仿真分析。本文的结果表明，提出的2-DOF-SP优于某些用于调节升压转换器的输出电压和干扰衰减的众所周知的控制方案。
更新日期：2021-03-17
in converter during its continuous conduction mode (CCM) operation. This paper combines theory of smith predictor with boost converter for (i) analytically computing gains of PID controller, (ii) design of a low pass filter to deal with challenges posed by dynamic RHPZ. This two degrees of freedom (2‐DOF) control scheme is analytically derived as a function of the converter's parameters. Gains of PID controller, deduced in terms of circuit's parameter, are used in sequel for extensive simulation analysis of the converter's control loop. Results in this paper establish that the proposed 2‐DOF‐SP outperforms certain well known control schemes used in regulating output voltage and disturbance attenuation in boost converter.
中文翻译：
DC-DC升压转换器的2DOF史密斯预测器控制方案的分析调整：过程控制的观点
DC-DC升压转换器中严格的电压调节是功率转换理论中的经典工程问题。升压转换器的电压模式控制（VMC）困难，主要有两个原因。这两个原因中的第一个也是最重要的一点是，转换器的非最小相位（NMP）行为是由于在VMC中控制输出到（c 2 o）的传递函数中存在动态右半平面零（RHPZ）而引起的。第二个原因是存在参数不确定性**参数不确定性在降低环路带宽方面起着决定性的作用。这导致不良的瞬态响应
在转换器的连续导通模式（CCM）运行期间 本文将史密斯预测器理论与升压转换器相结合，用于（i）分析计算PID控制器的增益，（ii）设计低通滤波器以应对动态RHPZ带来的挑战。根据转换器参数的分析得出这两个自由度（2-DOF）控制方案。PID控制器的增益（根据电路的参数得出）在后续工作中用于对变频器的控制环进行广泛的仿真分析。本文的结果表明，提出的2-DOF-SP优于某些用于调节升压转换器的输出电压和干扰衰减的众所周知的控制方案。
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