Sliding Mode Control: Overview of Its Applications in Power Converters

Kömürcügil, Hasan; Biricik, Samet; Bayhan, Sertaç; Zhang, Zhen

doi:10.1109/mie.2020.2986165

Cited by 123 publications

(46 citation statements)

References 66 publications

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“…For stability reasons, the following existence condition should be ensured [12]:

\begin{equation}\sigma \dot \sigma &lt; 0\end{equation}

…”

Section: Design Of Proposed Control Methodsmentioning

confidence: 99%

“…However, there is no analytical/heuristic approach to determine the values of these control gains. The design of the sliding mode control for multilevel inverter-based DVR in which control of DC capacitor voltages as well as ac inductor current is essential (see Section 3), using single sliding surface function is not possible [12][13][14][15]. Even though two sliding surface functions are combined in a single sliding surface function, a weighting factor (WF) [16], hysteresis band [17], and a suitable gain [18] are needed in SMC approaches.…”

Section: Introductionmentioning

confidence: 99%

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A simplified sliding‐mode control method for multi‐level transformerless DVR

Kömürcügil

Bayhan

Güler

et al. 2022

IET Power Electronics

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Here, a finite‐control‐set sliding‐mode control (FCS‐SMC) method is proposed for single‐phase three‐level T‐type inverter‐based transformerless dynamic voltage restorers (TDVRs). The inherent advantages of SMC (fast dynamic response and high robustness) are combined with FCS concept to increase the effectiveness of the method in achieving the desired control objectives. First, the use of FCS eliminates the modulator requirement, which reduces the design complexity in the practical implementation. Second, an effective method based on charging/discharging conditions of DC capacitors is proposed for balancing capacitor voltages using relevant switching state rather than combining DC voltage error with the inductor current error through a suitable weighting factor in forming the cost function. Therefore, the weighting factor necessity in the control algorithm is eliminated. Finally, the steady‐state error in the compensation voltage is eliminated by the proportional‐resonant (PR) controller. The studied T‐type inverter‐based TDVR topology offers an alternative solution to the existing DVR topologies. Experimental results are carried out to demonstrate the effectiveness of the proposed FCS‐SMC method in maintaining the load voltage at the desired level despite the voltage sags, swells, and distortions occurring in the grid voltage.

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“…For stability reasons, the following existence condition should be ensured [12]:

\begin{equation}\sigma \dot \sigma &lt; 0\end{equation}

…”

Section: Design Of Proposed Control Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A simplified sliding‐mode control method for multi‐level transformerless DVR

Kömürcügil

Bayhan

Güler

et al. 2022

IET Power Electronics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Therefore, the capacitor voltages are selfbalanced without using their references. Taking derivative of x 1 and x 2 using Equations ( 6), ( 9), ( 10) and (20), one can obtain…”

Section: Derivation Of Lyapunov Energy Functionmentioning

confidence: 99%

“…To control power converters, many powerful nonlinear control techniques like sliding mode control (SMC) [20] and model predictive control (MPC) [21] are developed for power converters. However, the control of three‐level T‐type rectifiers is not studied extensively.…”

Section: Introductionmentioning

confidence: 99%

An enhanced finite control set model predictive control method with self‐balancing capacitor voltages for three‐level T‐type rectifiers

Bayhan

Kömürcügil

Güler

2022

IET Power Electronics

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An effective finite control set model predictive control (FCS‐MPC) is introduced for single‐phase three‐level T‐type rectifiers supplying resistive as well as constant power loads (CPL). The main problem of CPL is the negative resistance phenomenon that endangers the rectifier's stability. Hence, the proposed FCS‐MPC method is based on Lyapunov's stability theory such that the stability of the rectifier is guaranteed under all operating points. Unlike the existing FCS‐MPC methods, the cost function design in the proposed control method is formulated on the rectifier's stability. According to Lyapunov's stability theory, the rectifier stays stable provided that the rate of change of Lyapunov function is negative. In this case, the derivative of the Lyapunov function can be used as the cost function without utilizing any weighting factor. Therefore, contrary to the existing FCS‐MPC methods, the weighting factor requirement is eliminated which leads to easiness in the design and implementation of the controller. Experimental results reveal that the proposed control approach exhibits very good performance with undistorted and distorted grid voltage conditions when the rectifier feeds resistive and CPL loads.

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“…For this reason, the model predictive control (MPC) and sliding mode control (SMC) methods have gained great attention in the last decade [18][19][20] . The performance of the SMC method is independent of the system parameters [21] . Besides this advantage, the chattering and determining the controller gain are the key challenges [22] .…”

Section: Introductionmentioning

confidence: 99%