Design of a sliding mode control for a DC-to-DC buck-boost converter

Salazar, Pablo D. Paz; Ayala, Paúl; Jiménez, Susset Guerra; Fernández, A. Guillermo

doi:10.1109/ccdc.2013.6561777

Cited by 5 publications

(4 citation statements)

References 1 publication

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“…Additionally, the value of the capacitor should be chosen to minimize the ripple voltage (∆V C ). The specific values for the inductor (L) and output capacitor (C b ) can be determined using Equations ( 40) and ( 41) [37][38][39][40].…”

Section: Mg Subsystemmentioning

confidence: 99%

Energy Internet-Based Load Shifting in Smart Microgrids: An Experimental Study

Jasim

Mohseni

et al. 2023

Energies

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This study investigated a grid-connected smart microgrid (MG) system integrating solar photovoltaic (PV) panels and a battery energy storage system (BESS) as distributed energy resources (DERs) to locally serve residential loads. The load-shifting demand-side management (DSM) technique was employed to effectively manage the load appliances. The proposed load-shifting algorithm relies on minimum price incentives to allow customers to allocate their load appliances economically during minimum price periods. The algorithm considers the waiting times and minimum tariff periods for appliances, calculates precise operating durations for each appliance, and prioritizes powering the appliances from the MG first, followed by the main grid. The system comprises two non-shiftable and three shiftable loads. When the MG power is insufficient to activate all shiftable loads, the system transfers the remaining unsupplied shiftable appliances to periods with low-priced energy. The Energy Internet concept is adopted to manage energy and monitor usage when a customer is unable to check the accuracy of their energy meter by supervising the system’s features on-site. The proposed comprehensive system enables load management, continuous monitoring, customer awareness, and energy cost saving. Six cases were studied, both numerically and experimentally, with varying MG power generation and load pre-scheduling periods, with and without DSM application. In all adopted cases, the implemented system save energy costs by at least 50%.

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Section: Mg Subsystemmentioning

confidence: 99%

Energy Internet-Based Load Shifting in Smart Microgrids: An Experimental Study

Jasim

Mohseni

et al. 2023

Energies

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“…The magnitude of the output voltage of the BB may be less or greater than the mag nitude of the input voltage and have the opposite polarity, depending on the arrangemen of the components used to implement the BB circuit. The output voltage can be varied linearl between 0 and (+/−)V by adjusting the MOSFET's duty cycle [39,40]. Figure 3 It is understood that the controller's robustness over time to variations in line an load is the result of the nonlinear nature of the SMC, which has been built by additiona 𝛽𝑣 𝑜 components for BB converters, where 𝛽𝑣 𝑜 is the instantaneous output voltage.…”

Section: Sliding Coefficient Ratiosmentioning

confidence: 99%

“…The magnitude of the output voltage of the BB may be less or greater than the magnitude of the input voltage and have the opposite polarity, depending on the arrangement of the components used to implement the BB circuit. The output voltage can be varied linearly between 0 and (+/−)V by adjusting the MOSFET's duty cycle [39,40]. Figure 3 depicts the graphical diagram of the fixed-frequency PWM-based SMC buck-boost converter.…”

Section: Sliding Coefficient Ratiosmentioning

confidence: 99%

A New Decentralized PQ Control for Parallel Inverters in Grid-Tied Microgrids Propelled by SMC-Based Buck–Boost Converters

Jasim

Neagu

2022

Electronics

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Nowadays, the microgrid (MG) concept is regarded as an efficient approach to incorporating renewable generation resources into distribution networks. However, managing power flows to distribute load power among distribution generators (DGs) remains a critical focus, particularly during peak demand. The purpose of this paper is to control the adopted grid-tied MG performance and manage the power flow from/to the parallel DGs and the main grid using discrete-time active/reactive power (PQ) control based on digital proportional resonant (PR) controllers. The PR controller is used to eliminate harmonics by acting as a digital infinite-impulse response (IIR) filter with a high gain at the resonant frequency. Additionally, the applied PR controller has fast reference signal tracking, responsiveness to grid frequency drift, and no steady-state error. Moreover, this paper describes the application of robust nonlinear sliding mode control (SMC)-technique-based buck–boost (BB) converters. The sliding adaptive control scheme is applied to prevent the output voltage error that occurs during DG failure, load variations, or system parameter changes. This paper deals with two distinct case studies. The first one focuses on applying the proposed control for two parallel DGs with and without load-changing conditions. In the latter case, the MG is expanded to include five DGs (with and without DG failure). The proposed control technique has been compared with the droop control and model predictive control (MPC) techniques. As demonstrated by the simulation results in MATLAB software, the proposed method outperformed the others in terms of both performance analysis and the ability to properly share power between parallel DGs and the utility grid.

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“…Authors in [15] have presented a unified approach to design PWM-based SMCs for DC/DC converters with resistive load and operating in CCM, wherein the switching function is in PID form. The control of a buck-boost converter with resistive load using the simple switching function in the current and voltage modes is presented in [16] and [17], respectively. A PWM-based SMC for a buck-boost converter with resistive load is proposed in [18], wherein the ideal sliding mode is generated in an auxiliary observer loop to prevent the chattering phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Mitigation of Negative Impedance Instabilities in a DC/DC Buck-Boost Converter with Composite Load

Singh¹,

Rathore²,

Fulwani³

2016

Journal of Power Electronics

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A controller to mitigate the destabilizing effect of constant power load (CPL) is proposed for a DC/DC buck-boost converter. The load profile has been considered to be predominantly of CPL type. The negative incremental resistance of the CPL tends to destabilize the feeder system, which may be an input filter or another DC/DC converter. The proposed sliding mode controller aims to ensure system stability under the dominance of CPL. The effectiveness of the controller has been validated through real-time simulation studies and experiments under various operating conditions. The controller has been demonstrated to be robust with respect to variations in supply voltage and load and capable of mitigating instabilities induced by CPL. Furthermore, the controller has been validated using all possible load profiles, which may arise in modern-day DC-distributed power systems.

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Design of a sliding mode control for a DC-to-DC buck-boost converter

Cited by 5 publications

References 1 publication

Energy Internet-Based Load Shifting in Smart Microgrids: An Experimental Study

Energy Internet-Based Load Shifting in Smart Microgrids: An Experimental Study

A New Decentralized PQ Control for Parallel Inverters in Grid-Tied Microgrids Propelled by SMC-Based Buck–Boost Converters

Mitigation of Negative Impedance Instabilities in a DC/DC Buck-Boost Converter with Composite Load

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