Overcoming the Detectability Obstacle in Adaptive Output Feedback Control of DC–DC Boost Converter With Unknown Load

Tavan, Mehdi; Sabahi, Kamel; Hajizadeh, Amin; Soltani, Mohsen; Jessen, Kasper

doi:10.1109/tcst.2020.3044378

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…where (25) has been used to get the last identity. Now, regarding ( 20)-( 21), an asymptotic estimation of E and ρ can be obtained by…”

Section: Estimator Designmentioning

confidence: 99%

“…A PE-like assumption on the states and control input is needed to guarantee the state and the parameter estimation in [23]. The detectability obstacle is tackled by an immersion and invariance (I&I) based observer design for a DC-DC boost converter with unknown load conductance in [25] which is extended to a class of DC-DC converters in [26]. Both of these works need to sense the input and output voltage.…”

Section: Introductionmentioning

confidence: 99%

“…In [27], an output feedback controller is proposed for the DC-DC boost converter, which requires knowledge about output load conductance. The proposed algorithms in [25], [26], and [27] are based on a lossless model of the converter with considering the saturation of the control input. A generalized parameter estimation-based observer (GPEO) is designed for a class of converters, including boost converters, under a weaker convergence condition than PE in [28].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Sensorless Control of a Single-Phase AC–DC Boost Converter Without Measuring Input Voltage and Current

et al. 2023

Self Cite

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It is well-known that the accurate measurement of input voltage and current, as the feedforward and feedback terms, plays a crucial role in the nonlinear controller design for power factor compensation of an AC-DC boost converter. This paper addresses the problem of the simultaneous estimation of the input voltage and current from the output voltage in a full-bridge AC-DC boost converter. In the lossless model of the system, those variables are unobservable from the output voltage when the control input is zero. To overcome this, the system dynamics are immersed in a proper form by a new filtered transformation. The phase and amplitude of the input voltage, along with the input current, are globally estimated from the output voltage by a fifth-dimensional estimator. Unlike some existing results, the stability of the proposed estimator does not rely on a priori knowledge about the parasitic resistances and is guaranteed exponentially under the persistence of excitation conditions on the control signal. An application of the proposed estimator is presented in conjunction with a dynamic controller to form a sensorless control algorithm that does not require any sensor on the input side and controls the system only by the feedback from the output voltage. Processor-in-the-loop (PIL) studies conducted by OPAL-RT OP 5700 are used to assess the performances of the proposed estimator and controller.

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“…where (25) has been used to get the last identity. Now, regarding ( 20)-( 21), an asymptotic estimation of E and ρ can be obtained by…”

Section: Estimator Designmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sensorless Control of a Single-Phase AC–DC Boost Converter Without Measuring Input Voltage and Current

et al. 2023

Self Cite

View full text Add to dashboard Cite

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“…Besides, the original state

x false(t false)

will settle down to the desired equilibrium points with a dynamic behavior converging to that of the target dynamics. This scheme applies to practical control design problems for many types of systems such as power systems [23–27], antagonistic joint with nonlinear mechanical stiffness [28], a moving‐mass flight vehicle [29], an induction motor [30], Quadrotors [31], DC‐DC converter [32], unmanned aerial vehicle (UAV) [33], elastic drives, [34], flywheel energy storage system [35], and so on. The interested reader is referred to [21] for more details and other real applications.…”

Section: Nonlinear Control Designmentioning

confidence: 99%

Congestion tracking control for wireless TCP/AQM network via immersion and invariance

Poonyanirun

Kanchanaharuthai

2022

Asian Journal of Control

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This paper deals with an immersion and invariance (I&I) control design for wireless Transmission Control Protocol (TCP) network to solve Active Queue Management (AQM) problems. With the help of this strategy, the developed control law can be used to cope with congestion tracking problems for a nonlinear wireless network model. Besides, the nonlinear congestion control law is proposed to assure that the queue length is able to track the desired queue length despite having sudden changes. The developed control design is validated in the MATLAB environment. The effectiveness of the developed control is verified through a simulation and compared with integral backstepping design, backstepping design, sliding mode design, and synergetic control design. The simulation results demonstrated that the presented strategy is not only able to solve the desired congestion tracking control problem but also provide improved transient performances.

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“…To improve the transient performances of the DC/DC converters, various nonlinear control methods have been proposed, such as sliding mode control, 30 adaptive control, 31 and one‐cycle control (OCC) 32 . OCC can reject disturbances in the input of the DC/DC converter within one switching period and the dynamic performance of the converter can be improved obviously.…”

Section: Introductionmentioning

confidence: 99%

One‐cycle controllability of high step‐up Boost converter with coupled inductor

Song

Chang

Liu

et al. 2023

Circuit Theory & Apps

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Comparing with traditional pulse width modulation technique, the transient performances of the high step-up DC/DC converters can be significantly improved by one-cycle control (OCC) technique, which is an appropriate control strategy for interface converters directly connecting the renewable energies to the DC microgrid. However, the suitability of OCC for these converters is rarely studied. One-cycle controllability of the high step-up DC/DC Boost converter with coupled inductor is studied with theoretical researches and experimental verifications. First, with the analysis on the operating modes of the converter, its periodic switched linear system model and the criterion for OCC are established. Furthermore, one-cycle controllability of the converter is calculated in detail. Final, a prototype of the high step-up converter from 48 to 380 V is prepared. Experimental results indicate that the disturbances in the input of the high step-up converter can be depressed within only one switching cycle. Ideal dynamic characteristic for the converter under disturbance in the output is also achieved. Results of this paper are meaningful for investigations on the transient characteristics of high step-up DC/DC converters applied to DC microgrid.

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Overcoming the Detectability Obstacle in Adaptive Output Feedback Control of DC–DC Boost Converter With Unknown Load

Cited by 8 publications

References 27 publications

Sensorless Control of a Single-Phase AC–DC Boost Converter Without Measuring Input Voltage and Current

Sensorless Control of a Single-Phase AC–DC Boost Converter Without Measuring Input Voltage and Current

Congestion tracking control for wireless TCP/AQM network via immersion and invariance

One‐cycle controllability of high step‐up Boost converter with coupled inductor

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