Event Trigger Super Twisting Sliding Mode Control for DC Micro Grid With Matched/Unmatched Disturbance Observer

Kumar, Vivek; Mohanty, Soumya R.; Kumar, Shashank

doi:10.1109/tsg.2020.2990451

Cited by 68 publications

(22 citation statements)

References 34 publications

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“…The controller's performance is evaluated under a variety of circumstances, including variations in solar irradiation and load fluctuations. The performance of the developed controller is also compared to existing control approach 1 in [33] and existing control approach 2 in [30] to demonstrate its superiority. When there is a power shortage, the BESS will deliver the necessary power to the load; when power is sufficient, the BESS will absorb the surplus power from the DC-bus.…”

Section: Simulation Results and Discussionmentioning

confidence: 99%

“…The nonlinear sliding mode control (SMC) scheme, as detailed in [33,34], is a viable solution for overcoming the limitations of BSCs and FBLCs. In [35,36], a nonlinear SMC for DC-DC converters was described to manage the bidirectional power flow between DCMG components and the DC-bus.…”

Section: Literature Reviewmentioning

confidence: 99%

“…However, due to the high-frequency fluctuation near the sliding surface, known as the "chattering effect", standard SMC is not a suitable control system for practical applications. Thus, current research has offered a number of ways to reduce chattering, including super-twisting SMC [33], nonsingular fast terminal SMC [39], and reaching law-based methodology [40]. The reaching law-based technique might be able to successfully address the chattering problem since it works directly on the reaching phase of SMC schemes.…”

Section: Literature Reviewmentioning

confidence: 99%

See 2 more Smart Citations

Design of Robust Integral Terminal Sliding Mode Controllers with Exponential Reaching Laws for Solar PV and BESS-Based DC Microgrids with Uncertainties

2022

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In this paper, an integral terminal sliding mode controller (ITSMC) based on a modified exponential reaching law (MERL) is developed for providing large-signal DC-bus voltage stability while smoothing power flow in DC microgrids (DCMGs). It is worth mentioning that this control approach is not employed in DCMG applications yet to adjust the DC-bus voltage while preserving power balance. The proposed DCMG is made up of a solar photovoltaic (PV) unit, a battery energy storage system (BESS), and DC loads. A DC-DC boost converter (DDBC) and a bidirectional DC-DC converter (BDDC) are employed to connect the solar PV and BESS, respectively, with the DC-bus, which not only controls the output power of these units but also regulates the DC-bus voltage. First, a detailed dynamical model including external disturbances is developed for each component, i.e., the solar PV and BESS. Then, the proposed control approach is employed on these units to get their corresponding control signals. Afterward, the overall stability of each unit is ensured using the Lyapunov stability theory. Moreover, to ensure the robustness of the proposed controller, external disturbances are also bounded based on the value of user-defined constants. Finally, simulation results are used to evaluate the effectiveness of the proposed control approach in a variety of operational scenarios. Additionally, simulation results of the proposed control strategy are compared to those of existing controllers to demonstrate its superiority.

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Section: Simulation Results and Discussionmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

Section: Literature Reviewmentioning

confidence: 99%

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Design of Robust Integral Terminal Sliding Mode Controllers with Exponential Reaching Laws for Solar PV and BESS-Based DC Microgrids with Uncertainties

2022

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“…where d 1 (t) and d 2 (t) represent unmodeled dynamics and external disturbances. To design the proposed controller, the following assumptions must be met [25,26]: Assumption 1: All state variables are measurable. Assumption 2: The functions f 1 , f 2 , g 1 and g 2 have uncertainty.…”

Section: Power Sharing Using Dbsmc Controlmentioning

confidence: 99%

Robust, Accurate, and Fast Decentralized Power Sharing Mechanism for Isolated DC Microgrid Using Droop-Based Sliding-Mode Control

Veysi

Aghaei

Soltanpour

et al. 2022

IEEE Trans. Smart Grid

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In this paper, a droop-based sliding mode controller (DBSMC) is designed for power sharing in an isolated DC microgrid (DC MG), with improved nonlinear droop model, in the presence of bounded structured uncertainties and external disturbances. The proposed DBSMC strategy does not require any communication link. The design process of the proposed controller is such that the trade-off between the two factors proportional power sharing and precise voltage regulation reaches the minimum possible. The creative design of the controller greatly reduced the control action stress, in such a way that, the occurrence of various uncertainties in the nonlinear droop model is compensated by applying small intelligent changes in the control parameters, using a fuzzy approximator. To evaluate the efficiency of the designed DBSMC controller, simulations are performed on an isolated DC MG with DC-DC buck configuration in MATLAB software. Finally, the real-time digital simulation results utilizing real-time digital power system simulator (RTDS) corroborate the performance of the proposed DBSMC controller. The simulation results obtained from MATLAB and the RTDS verify the robust, accurate and fast function of the proposed droop-based controller in power sharing of the isolated DC MG in the presence of variable operating conditions, parametric uncertainties and external disturbances.

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“…However, this method attenuates the chattering by sacrificing precision of the DC voltage and power tracking. A disturbance-observer-based sliding-mode controller is proposed in [22]; however, the control method can only weaken the chattering but not eliminate that. Therefore, the chattering-free control performance of SMC needs to be further improved.…”

Section: Introductionmentioning

confidence: 99%

Full-Order Terminal Sliding-Mode Control for Soft Open Point

Zhou

et al. 2022

Energies

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In this paper, a full-order terminal sliding-mode control method is proposed for the rectifier side and the inverter side of the soft open point (SOP). The rectifier-side DC voltage control system consists of the voltage- and current-loops with controllers which are designed using full-order sliding-mode (FOSM) to enhance the dynamic performances and anti-disturbance. The integral type virtual control signal without chattering is designed to compensate for the unmatched uncertainties including external disturbances and some parameter perturbations. The full-order terminal sliding-mode (FOTSM) controller for the current-loop can force the current response to track its reference in finite time. The inverter side power control system is designed to regulate the power. The FOTSM controller for the power-loop ensures the power-tracking accuracy under a disturbed condition. Finally, the simulations demonstrate the effectiveness of the proposed controllers for the rectifier and inverter sides in the soft open point (SOP).

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Event Trigger Super Twisting Sliding Mode Control for DC Micro Grid With Matched/Unmatched Disturbance Observer

Cited by 68 publications

References 34 publications

Design of Robust Integral Terminal Sliding Mode Controllers with Exponential Reaching Laws for Solar PV and BESS-Based DC Microgrids with Uncertainties

Design of Robust Integral Terminal Sliding Mode Controllers with Exponential Reaching Laws for Solar PV and BESS-Based DC Microgrids with Uncertainties

Robust, Accurate, and Fast Decentralized Power Sharing Mechanism for Isolated DC Microgrid Using Droop-Based Sliding-Mode Control

Full-Order Terminal Sliding-Mode Control for Soft Open Point

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