An Adaptive Passivity‐Based Controller of a Buck‐Boost Converter with a Constant Power Load

He, Wei; Ortega, Roméo; Machado, Juan E.; Li, Shihua

doi:10.1002/asjc.1751

Cited by 34 publications

(40 citation statements)

References 25 publications

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“…By using (11), the corresponding fractional-order for the approximation is α = 0.494, which produces the frequency response shown in Figure 5 obtained with (5) and (6). The phase contribution of the controller φ c = 44.46 • , computed by using (10), is consistent with the phase plot of Figure 5.…”

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confidence: 66%

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Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter

et al. 2020

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In this paper, the approximation of a fractional-order PIDcontroller is proposed to control a DC–DC converter. The synthesis and tuning process of the non-integer PID controller is described step by step. A biquadratic approximation is used to produce a flat phase response in a band-limited frequency spectrum. The proposed method takes into consideration both robustness and desired closed-loop characteristics, keeping the tuning process simple. The transfer function of the fractional-order PID controller and its time domain representation are described and analyzed. The step response of the fractional-order PID approximation shows a faster and stable regulation capacity. The comparison between typical PID controllers and the non-integer PID controller is provided to quantify the regulation speed introduced by the fractional-order PID approximation. Numerical simulations are provided to corroborate the effectiveness of the non-integer PID controller.

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supporting

confidence: 66%

“…Different control strategies have been proposed to enhance performance of DC-DC converters, ranging from the widely used Proportional-Integral and Proportional-Integral-Derivative controllers [7][8][9], sliding mode control [10], passivity-based control [11], fuzzy logic controllers [12,13] or poles placement [14], for instance.…”

Section: Introductionmentioning

confidence: 99%

Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter

et al. 2020

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“…According to [24] the average Buck-Boost converter circuit can be written by equivalent state space equations:ẋ…”

Section: Buck-boost and Flyback Examplesmentioning

confidence: 99%

SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems

et al. 2018

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In this work, a new real-time Simulation method is designed for nonlinear control techniques applied to power converters. We propose two different implementations: in the first one (Single Hardware in The Loop: SHIL), both model and control laws are inserted in the same Digital Signal Processor (DSP), and in the second approach (Double Hardware in The Loop: DHIL), the equations are loaded in different embedded systems. With this methodology, linear and nonlinear control techniques can be designed and compared in a quick and cheap real-time realization of the proposed systems, ideal for both students and engineers who are interested in learning and validating converters performance. The methodology can be applied to buck, boost, buck-boost, flyback, SEPIC and 3-phase AC-DC boost converters showing that the new and high performance embedded systems can evaluate distinct nonlinear controllers. The approach is done using matlab-simulink over commodity Texas Instruments Digital Signal Processors (TI-DSPs). The main purpose is to demonstrate the feasibility of proposed real-time implementations without using expensive HIL systems such as Opal-RT and Typhoon-HL.

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“…The recent research presented in [25] proposes an adaptive PBC and provides a complete stability analysis for a buckboost converter feeding a CPL. The approach combines interconnection and damping assignment (IDA) control [26] and the immersion and invariance (I&I) technique for estimation of unknown parameter [27].…”

Section: Introductionmentioning

confidence: 99%

“…The approach combines interconnection and damping assignment (IDA) control [26] and the immersion and invariance (I&I) technique for estimation of unknown parameter [27]. However, the control law of [25] is provided in terms of a time-scaled model and is extremely complicated to be of practical interest. A second approach, presented in [28], [29], addresses the same control problem, but synthesizes a significantly simpler control law.…”

Section: Introductionmentioning

confidence: 99%

Voltage Regulation in Buck–Boost Converters Feeding an Unknown Constant Power Load: An Adaptive Passivity-Based Control

Soriano-Rangel¹,

Mancilla–David³

et al. 2021

IEEE Trans. Contr. Syst. Technol.

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Rapid developments in power distribution systems and renewable energy have widened the applications of dcdc buck-boost converters in dc voltage regulation. Applications include vehicular power systems, renewable energy sources that generate power at a low voltage, and dc microgrids. It is noted that the cascade-connection of converters in these applications may cause instability due to the fact that converters acting as loads have a constant power load (CPL) behavior. In this paper, the output voltage regulation problem of a buck-boost converter feeding a CPL is addressed. The construction of the feedback controller is based on the interconnection and damping assignment control technique. Additionally, an immersion and invariance parameter estimator is proposed to compute online the extracted load power, which is difficult to measure in practical applications. It is ensured through the design that the desired operating point is (locally) asymptotically stable with a guaranteed domain of attraction. The approach is validated via computer simulations and experimental prototyping.

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An Adaptive Passivity‐Based Controller of a Buck‐Boost Converter with a Constant Power Load

Cited by 34 publications

References 25 publications

Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter

Fractional-Order Approximation and Synthesis of a PID Controller for a Buck Converter

SHIL and DHIL Simulations of Nonlinear Control Methods Applied for Power Converters Using Embedded Systems

Voltage Regulation in Buck–Boost Converters Feeding an Unknown Constant Power Load: An Adaptive Passivity-Based Control

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