2 research outputs found

    Fuzzy second order sliding mode control of a unified power flow controller

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    Purpose. This paper presents an advanced control scheme based on fuzzy logic and second order sliding mode of a unified power flow controller. This controller offers advantages in terms of static and dynamic operation of the power system such as the control law is synthesized using three types of controllers: proportional integral, and sliding mode controller and Fuzzy logic second order sliding mode controller. Their respective performances are compared in terms of reference tracking, sensitivity to perturbations and robustness. We have to study the problem of controlling power in electric system by UPFC. The simulation results show the effectiveness of the proposed method especiallyin chattering-free behavior, response to sudden load variations and robustness. All the simulations for the above work have been carried out using MATLAB / Simulink. Various simulations have given very satisfactory results and we have successfully improved the real and reactive power flows on a transmission lineas well as to regulate voltage at the bus where it is connected, the studies and illustrate the effectiveness and capability of UPFC in improving power.Π’ настоящСй ΡΡ‚Π°Ρ‚ΡŒΠ΅ прСдставлСна ΡƒΡΠΎΠ²Π΅Ρ€ΡˆΠ΅Π½ΡΡ‚Π²ΠΎΠ²Π°Π½Π½Π°Ρ схСма управлСния, основанная Π½Π° Π½Π΅Ρ‡Π΅Ρ‚ΠΊΠΎΠΉ Π»ΠΎΠ³ΠΈΠΊΠ΅ ΠΈ Ρ€Π΅ΠΆΠΈΠΌΠ΅ скольТСния Π²Ρ‚ΠΎΡ€ΠΎΠ³ΠΎ порядка ΡƒΠ½ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π° ΠΏΠΎΡ‚ΠΎΠΊΠ° мощности. Π”Π°Π½Π½Ρ‹ΠΉ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€ ΠΎΠ±Π»Π°Π΄Π°Π΅Ρ‚ прСимущСствами с Ρ‚ΠΎΡ‡ΠΊΠΈ зрСния статичСской ΠΈ динамичСской Ρ€Π°Π±ΠΎΡ‚Ρ‹ энСргосистСмы, Π½Π°ΠΏΡ€ΠΈΠΌΠ΅Ρ€, Π·Π°ΠΊΠΎΠ½ управлСния синтСзируСтся с использованиСм Ρ‚Ρ€Π΅Ρ… Ρ‚ΠΈΠΏΠΎΠ² ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€ΠΎΠ²: ΠΏΡ€ΠΎΠΏΠΎΡ€Ρ†ΠΈΠΎΠ½Π°Π»ΡŒΠ½ΠΎ-ΠΈΠ½Ρ‚Π΅Π³Ρ€Π°Π»ΡŒΠ½ΠΎΠ³ΠΎ, ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π° ΡΠΊΠΎΠ»ΡŒΠ·ΡΡ‰Π΅Π³ΠΎ Ρ€Π΅ΠΆΠΈΠΌΠ° ΠΈ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π° ΡΠΊΠΎΠ»ΡŒΠ·ΡΡ‰Π΅Π³ΠΎ Ρ€Π΅ΠΆΠΈΠΌΠ° Π½Π΅Ρ‡Π΅Ρ‚ΠΊΠΎΠΉ Π»ΠΎΠ³ΠΈΠΊΠΈ Π²Ρ‚ΠΎΡ€ΠΎΠ³ΠΎ порядка. Π˜Ρ… ΡΠΎΠΎΡ‚Π²Π΅Ρ‚ΡΡ‚Π²ΡƒΡŽΡ‰ΠΈΠ΅ характСристики ΡΡ€Π°Π²Π½ΠΈΠ²Π°ΡŽΡ‚ΡΡ с Ρ‚ΠΎΡ‡ΠΊΠΈ зрСния отслСТивания эталонов, Ρ‡ΡƒΠ²ΡΡ‚Π²ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΡΡ‚ΠΈ ΠΊ возмущСниям ΠΈ надСТности. НСобходимо ΠΈΠ·ΡƒΡ‡ΠΈΡ‚ΡŒ ΠΏΡ€ΠΎΠ±Π»Π΅ΠΌΡƒ управлСния ΠΌΠΎΡ‰Π½ΠΎΡΡ‚ΡŒΡŽ Π² энСргосистСмС с ΠΏΠΎΠΌΠΎΡ‰ΡŒΡŽ ΡƒΠ½ΠΈΡ„ΠΈΡ†ΠΈΡ€ΠΎΠ²Π°Π½Π½ΠΎΠ³ΠΎ ΠΊΠΎΠ½Ρ‚Ρ€ΠΎΠ»Π»Π΅Ρ€Π° ΠΏΠΎΡ‚ΠΎΠΊΠ° мощности (UPFC). Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ модСлирования ΠΏΠΎΠΊΠ°Π·Ρ‹Π²Π°ΡŽΡ‚ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ ΠΌΠ΅Ρ‚ΠΎΠ΄Π°, особСнно Π² ΠΎΡ‚Π½ΠΎΡˆΠ΅Π½ΠΈΠΈ отсутствия Π²ΠΈΠ±Ρ€Π°Ρ†ΠΈΠΈ, Ρ€Π΅Π°ΠΊΡ†ΠΈΠΈ Π½Π° Π²Π½Π΅Π·Π°ΠΏΠ½Ρ‹Π΅ измСнСния Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ ΠΈ устойчивости. ВсС расчСты для Π²Ρ‹ΡˆΠ΅ΡƒΠΊΠ°Π·Π°Π½Π½ΠΎΠΉ Ρ€Π°Π±ΠΎΡ‚Ρ‹ Π±Ρ‹Π»ΠΈ Π²Ρ‹ΠΏΠΎΠ»Π½Π΅Π½Ρ‹ с использованиСм MATLAB/Simulink. Π Π°Π·Π»ΠΈΡ‡Π½Ρ‹Π΅ расчСтныС исслСдования Π΄Π°Π»ΠΈ вСсьма ΡƒΠ΄ΠΎΠ²Π»Π΅Ρ‚Π²ΠΎΡ€ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Π΅ Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹, ΠΈ ΠΌΡ‹ ΡƒΡΠΏΠ΅ΡˆΠ½ΠΎ ΡƒΠ»ΡƒΡ‡ΡˆΠΈΠ»ΠΈ ΠΏΠΎΡ‚ΠΎΠΊΠΈ Ρ€Π΅Π°Π»ΡŒΠ½ΠΎΠΉ ΠΈ Ρ€Π΅Π°ΠΊΡ‚ΠΈΠ²Π½ΠΎΠΉ мощности Π½Π° Π»ΠΈΠ½ΠΈΠΈ элСктропСрСдачи, Π° Ρ‚Π°ΠΊΠΆΠ΅ Ρ€Π΅Π³ΡƒΠ»ΠΈΡ€ΠΎΠ²Π°Π½ΠΈΠ΅ напряТСния Π½Π° шинС, ΠΊ ΠΊΠΎΡ‚ΠΎΡ€ΠΎΠΉ ΠΎΠ½Π° ΠΏΠΎΠ΄ΠΊΠ»ΡŽΡ‡Π΅Π½Π°, Ρ‡Ρ‚ΠΎ позволяСт ΠΈΠ·ΡƒΡ‡ΠΈΡ‚ΡŒ ΠΈ ΠΏΡ€ΠΎΠΈΠ»Π»ΡŽΡΡ‚Ρ€ΠΈΡ€ΠΎΠ²Π°Ρ‚ΡŒ ΡΡ„Ρ„Π΅ΠΊΡ‚ΠΈΠ²Π½ΠΎΡΡ‚ΡŒ ΠΈ возмоТности UPFC для увСличСния мощности

    Intelligent nonsingular terminal sliding-mode control via perturbed fuzzy neural network

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    [[abstract]]In this paper, an intelligent nonsingular terminal sliding-mode control (INTSMC) system, which is composed of a terminal neural controller and a robust compensator, is proposed for an unknown nonlinear system. The terminal neural controller including a perturbed fuzzy neural network (PFNN) is the main controller and the robust compensator is designed to eliminate the effect of the approximation error introduced by the PFNN upon the system stability. The PFNN is used to approximate an unknown nonlinear term of the system dynamics and perturbed asymmetric membership functions are used to handle rule uncertainties when it is hard to exactly determine the grade of membership functions. In additional, Lyapunov stability theory is used to discuss the parameter learning and system stability of the INTSMC system. Finally, the proposed INTSMC system is applied to an inverted pendulum and a voice coil motor actuator. The simulation and experimental results show that the proposed INTSMC system can achieve favorable tracking performance and is robust against parameter variations in the plant
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