Bài viết Nghiên cứu xác định điềm công suất cực đại của hệ thống biến đổi năng lượng giá sử dụng kỹ thuật Logic mở trình bày kết quả mô phỏng đã cho thấy: đây là kỹ thuật điều khiển tối ưu, hiệu quả cải thiện hiệu suất của máy phát điện gió khi tốc độ gió thay đổi, áp dụng cho loại máy phát điện không đồng bộ roto lồng sóc, bộ điều khiển đã cho phép khai thác tối đa điện năng từ nguồn năng lượng gió. | STUDY OF MAXIMUM POWER POINT TRACKING OF A WIND ENERGY CONVERSION SYSTEM USING FUZZY LOGIC 1 Pham Ngoc Hung , Trinh Trong Chuong 1 2 Electric Power University, Hanoi University of Industry 1. INTRODUCTION1 Huge exhaustion of fuel and growing concern in environment protection from using fossil fuel and nuclear energy 1 2 sources. A lot of renewable power generation sources like wind energy, solar energy, wave energy, hydro power and more developed systems depend on hydrogen. Wind energy conversion systems is the fastest growing energy technology in the world. Wind energy changes throughout the day. The performance output power depends on the accuracy of tracking the peak power points by the maximum power point tracking MPPT) controller. In the last years, there is significant research effort in control design for wind energy conversion systems [1], [2]. Fuzzy logic control of generator speed was used [3]. The advantages in using fuzzy logic controller against conventional PI controllers are pointed out in better response to frequently changes in wind speed. Ref. [1] shows the problem of output power regulation of fixed-pitch variable-speed wind energy conversion systems. Ref. [2] introduced an integral fuzzy sliding mode control. Ref. [3] maximize energy capture by determining the optimal rotor speed. In [2] pitch control was employed to capture a maximum energy from the wind. In this paper we will deal with variable-speed wind energy conversion systems (VSWECS) with induction generator [4, 5], squirrel cage induction generator (SCIG) [6, 7, 8], which we will control on it to maximize the power efficiency. To achieve this goal the tip-speed-ratio of turbine must be keep at its desired value, in spite of, variations of wind. We deal with how can extract maximum power from available wind by suitable algorithm. and there is no methodical way for finding sufficient stability condition and good performance. This paper is organized as follows. In section II, we
