PWM Nonlinear Control With Load Power Estimation for Output Voltage Regulation of a Boost Converter With Constant Power Load

Martínez-Treviño, Blanca Areli; Aroudi, Abdelali El; Valderrama-Blavi, Hugo; Cid-Pastor, A.; Vidal-Idiarte, Enric; Martínez-Salamero, L.

doi:10.1109/tpel.2020.3008013

Cited by 35 publications

(22 citation statements)

References 38 publications

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“…Using the control to output transfer function (25), a proportional-integral compensator is designed for the outer control loop. Thus, following the classical technique of pole assignment, the system loop gain can be expressed as: (26) and the characteristic equation of the system will be given by…”

Section: B Outer Control Designmentioning

confidence: 99%

“…For the linear controller case, it was shown that an unstable transfer function has to be compensated due to the effect of the negative incremental resistance imposed by the CPL [22], [23]. Other solutions based on non-linear controls have been reported, such as sliding mode control (SMC) [24], PWM input-output linearization [25], and PWM adaptive control [26].…”

Section: Introductionmentioning

confidence: 99%

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Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

et al. 2022

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This paper analyzes for the first time a two-loop sliding-mode control (SMC) of a high-order converter supplying a constant power load (CPL). The converter is a single-switch quadratic buck structure (QBC) interfacing a domestic 380 V DC bus to a CPL requiring a regulated voltage of 48 V DC. The converter is unstable in the absence of control and even after the insertion of an inner loop based on SMC of the input inductor current. The addition of an appropriate linear outer loop establishing the reference to the inner loop stabilizes the system and provides output voltage regulation. The regulated QBC shows a fast recovery of the output voltage with negligible overshoot in response to step-type changes of the output power or the input voltage. It is also shown that the implemented regulator for CPL supply can be used directly in the case of a constant current load (CCL) or a constant resistance load (CRL) resulting in similar performance to the CPL case. PSIM simulations and experimental results in a 400 W prototype are in good agreement with theoretical predictions.INDEX TERMS High-order converters with constant power load, buck quadratic converter, sliding-mode control.

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Section: B Outer Control Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

et al. 2022

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“…However, the controller still seems to be complicated and strongly dependent of the converter parameters to be of any practical interest. An interesting and much simpler robust controller was recently introduced in [10] to regulate the output voltage of the DC-DC boost converter feeding an unknown CPL, that was estimated using a nonlinear differential equation. However, the authors opted for the controller derived using the ideal averaged model of the boost converter.…”

Section: Introductionmentioning

confidence: 99%

“…This is in contrast to many studies where the parameters are chosen in an ad-hoc manner and may require elaborate tuning steps. Using simulation, the effectiveness of the proposed controller is validated and compared against the nonlinear controller developed in [10].…”

Section: Introductionmentioning

confidence: 99%

UDE-Based Robust Nonlinear Control of the Boost Converter with Constant Power Load

Oucheriah

2023

Preprint

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The boost converter feeding a constant power load (CPL) is a non-minimum phase system that is prone to the destabilizing effects of the negative incremental resistance of the CPL and presents a major challenge in the design of stabilizing controllers. In this work, a robust nonlinear controller based on the uncertainty and disturbance estimator (UDE) scheme is successfully developed to tightly regulate the output voltage of the boost converter. A systematic procedure is developed to select the controller gains to achieve a satisfactory output response. Using simulation, the effectiveness of the proposed controller is validated and compared to a recent robust nonlinear controller.

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“…Furthermore, it has been reported that a CPL can destabilize the dynamics of the Boost converter in any conduction mode. Recently developed control strategies considered a CPL with single conduction modes or linearized models [ 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 ]. Unfortunately, it is not difficult to achieve DCM to CCM changes in a Boost converter, with both a resistive load or a CPL and in addition, with a CPL, the conduction mode depends on their power level and output voltage/current.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Stabilization Controller for the Boost Converter with a Constant Power Load in Both Continuous and Discontinuous Conduction Modes

et al. 2021

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The operation of Boost converters in discontinuous conduction mode (DCM) is suitable for many applications due to the, among other advantages, inductor volume reduction, high efficiency, paralleling, and low cost. Uses in biomedicine, nano/microelectromechanical, and higher power systems, where wide ranges of input/output voltage and a constant power load (CPL) can coexist, are well-known examples. Under extremely wide operating ranges, it is not difficult to change to a continuous conduction mode (CCM) operation, and instability, chaos, or bifurcations phenomena can occur regardless of the conduction mode. Unfortunately, existing control strategies consider a single conduction mode or linearized models because only slight resistive/CPL power level or input/output voltage variations (and no conduction mode changes) were expected. In this paper, new mathematical models for the Boost converter (with resistive or CPL) that are conduction mode independent are presented and validated. Since the open-loop dynamics of the proposed CPL model is unstable, a nonlinear control law capable of stabilizing the boost converter regardless of the conduction mode is proposed. A stability analysis based on a common-Lyapunov function is provided, and numerical and experimental tests are presented to show the proposal’s effectiveness.

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PWM Nonlinear Control With Load Power Estimation for Output Voltage Regulation of a Boost Converter With Constant Power Load

Cited by 35 publications

References 38 publications

Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

Sliding-Mode Control of a Quadratic Buck Converter With Constant Power Load

UDE-Based Robust Nonlinear Control of the Boost Converter with Constant Power Load

Nonlinear Stabilization Controller for the Boost Converter with a Constant Power Load in Both Continuous and Discontinuous Conduction Modes

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