1. Fuzzy Logic Controller Base on Direct Torque Control Fuzzy Logic Controller Base on Direct Torque Control Fuzzy Logic Controller Base on Direct Torque Control Fuzzy Logic Controller Base on Direct Torque Control Pedro Ponce * Juan C. Ramírez ** * Departamento de Ingeniería Eléctrica, Instituto Tecnológico de Estudios Superiores de Monterrey. ** Section of Graduate Studies and Research, College of Electrical and Mechanical Engineering National Polytechnic Institute

2. Schematic of Conventional DTC Induction Motor Drive With Voltage Source Inverter (VSI)

3. Voltage Space Vectors Table 1. Space vector voltage influence on torque and stator flux space vector.

4. Stator Flux Vector Problems Stator flux response in constant-torque region.

5. Conventional DTC Responses

6. Performance Of Dtc Using Variable Switching Sectors Proposed DTC scheme

7. The space vector model of induction motor in rotating reference framework, can be describe The stator voltage components (Vsx-Vsy) are given by :

8. Vsx and Vsy per unit values versus stator flux position Fuzzy Logic Angle Controller.

9. Space Vector Modulation

10. B=120° & A+C=60° T 1 + T 2 + T 0 = T T 0 = T- T 1 - T 2

11. Transient Conditions

12. Simulation Results A   = 0; B  = 30 0, and C  Reference (A) A   = 0; B   = 15 0 ; C   = 25 0 and D   = 30 0 (B) Torque (A) and stator flux response (B).

13. Stator flux locus Stator flux response in constant-torque and Field weakening regions for  =30 0 and HB=0.002.

14. Stator flux response Stator flux locus

15. Stator Currents Current Spectrum

16. Switching Frequency