Development of Sliding Mode Controller for a Modified Boost Ćuk Converter Configuration

The special issue “Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid” on MDPI Energies presents 20 accepted papers, with authors from North and South America, Asia, Europe and Africa, related to the emerging trends in energy storage and power conversion electronic circuits and systems, with a specific focus on transportation electrification and on the evolution of the electric grid to a smart grid. An extensive exploitation of renewable energy sources is foreseen for smart grid as well as a close integration with the energy storage and recharging systems of the electrified transportation era. Innovations at both algorithmic and hardware (i.e., power converters, electric drives, electronic control units (ECU), energy storage modules and charging stations) levels are proposed.

Section: Review Of the Contributionsmentioning

confidence: 99%

“…The proposed special issue has invited submissions related to energy storage, power converters and e-drive systems for electrified transportation and smart grid [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20]. The particular topics of interest include: Integration of Internet of Things (IoT) into E-transportation.…”

Section: Introductionmentioning

confidence: 99%

Energy Storage Systems and Power Conversion Electronics for E-Transportation and Smart Grid

Saponara

Mihet‐Popa

2019

“…In this section, to solve the output imbalance between the two flybacks caused by coupling, parameter inconsistency and disturbance, a novel sliding mode control (SMC) current controller is designed, since the SMC would realize good dynamic response, strong robustness and good regulation performance [42][43][44][45]. In this paper, the SMC current sharing controller is constructed based on the presented accurate fourth-order mathematical model, and the target of current sharing is realized by controlling the primary currents of dual-flyback converters to regulate the duty cycles of switches Q 1 and Q 2 .…”

Section: Current Controller Using Sliding Mode Controlmentioning

confidence: 99%

Model-Based Current Sharing Approach for DCM Interleaved Flyback Micro-Inverter

Dong

Tian

et al. 2018

Current sharing control is a challenge for a discontinuous conduction mode (DCM) micro-inverter based on interleaved flyback topology. To solve this problem, this study proposes a novel and systemic model-based approach. Firstly, an accurate fourth-order model is presented for the interleaved flyback circuit, which takes the two flybacks' parameter mismatch and coupling into account. Secondly, based on the presented model, a continuous time sliding mode current controller is proposed to tackle the output imbalance caused by parameter mismatch, coupling and disturbance. The proposed controller is derived from the Lyapunov function without switching conditions. Finally, the effectiveness of the proposed model and control method is validated by simulation tests using MATLAB/SIMULINK. Simulation results show that the proposed approach improves the current sharing for the interleaved flyback micro-inverter when compared to the conventional current sharing approach.

“…To date, multiple large-signal modeling methods have been formulated [11][12][13][14]. Large-signal models of DC/DC converters are often nonlinear, and system analysis and synthesis require nonlinear control theory such as feedback linearization, Lyapunov control, sliding-mode control, passivity-based control, and optimal control [15][16][17][18][19][20][21][22][23][24]. Analysis and design of a control system using nonlinear theory involve a relatively constrained mathematical basis and complex mathematical transformations often lead to unclear physical meaning.…”

Section: Introductionmentioning

confidence: 99%

Inverse-System Decoupling Control of DC/DC Converters

Zhu

Huang

et al. 2019

Existing large-signal control schemes for DC/DC converters formulate control strategies based primarily on nonlinear control theory, and the associated design and implementation are relatively complex. In this work, a decomposition modeling and inverse-system decoupling control method is proposed for DC/DC converters that operate under large-signal disturbances. First, a large-signal circuit-averaged model for DC/DC converters is established. The proposed control system has a double closed-loop control structure composed of a voltage loop and a current loop. Then, the voltage-loop and current-loop controlled subsystems are decoupled and compensated to first-order integral elements using the inverse system method. Several linear feedback controllers are designed for first-order integral systems under various optimization criteria using the optimal control theory. Simulation and experiment were performed on buck–boost converters with resistive and constant power loads. The results show that under the control of the proposed controller, all systems exhibited excellent dynamic and steady-state performance. The proposed method allows the disturbance control of the DC/DC converter, the dynamic behavior control of the voltage loop, and the current loop to become independent processes. The local controller design follows the classical linear control design method and is a simple and effective large-signal control strategy.