Electrical Engineering North China Electric Power University Li Yonggang

"Electrical Engineering" at North China Electric Power University is a major professional basic course in the electrical engineering discipline. It is highly theoretical and closely related to engineering practice. This course takes four typical motors: transformers, synchronous motors, asynchronous motors, and DC motors as the learning objects. The content covers: the basic structure, working principle and operating characteristics of the motor; the basic electromagnetic relations and basic analysis methods of the motor, including: electromotive force equation, magnetic motion Potential balance relationship, power and torque balance equations, equivalent circuits, phasor diagrams; properties of electromotive force and magnetomotive force of motors and their relationship with time and space; basic experimental methods of motors. Through the study of this course, you can master the basic theory and basic analysis methods of electric motors, laying a solid foundation for further studying professional courses and engaging in professional work.

• Chapter 1：Introduction 1 (40 minutes and 48 seconds)

• Chapter 2：Introduction 2 (39 minutes and 53 seconds)

• Chapter 3：Introduction 3 (44 minutes and 49 seconds)

• Chapter 4：Basic working principle and structure of transformer 1 (40 minutes and 13 seconds)

• Chapter 5：Transformer operation analysis 1 (47 minutes and 55 seconds)

• Chapter 6：Transformer Operation Analysis 2 (42 minutes and 47 seconds)

• Chapter 7：Transformer Operation Analysis 3 (50 minutes and 22 seconds)

• Chapter 8：Transformer Operation Analysis 4 (45 minutes and 34 seconds)

• Chapter 9：Transformer operation analysis 5 (48 minutes and 51 seconds)

• Chapter 10：Transformer Operation Analysis 6 (30 minutes and 36 seconds)

• Chapter 11：Transformer Operation Analysis 7 (49 minutes and 41 seconds)

• Chapter 12：Transformer Operation Analysis 8 (38 minutes and 12 seconds)

• Chapter 13：Three-phase transformer (1) (45 minutes and 46 seconds)

• Chapter 14：Three-phase transformer (2) (51 minutes and 22 seconds)

• Chapter 15：Three-phase transformer (3) (46 minutes and 58 seconds)

• Chapter 16：Three-phase transformer (4) (32 minutes and 37 seconds)

• Chapter 17：Three-phase transformer (5) (48 minutes and 26 seconds)

• Chapter 18：Three-phase transformer (6) (41 minutes and 18 seconds)

• Chapter 19：Transformer Exercise Lesson (1) (51 minutes and 17 seconds)

• Chapter 20：Transformer Exercise Lesson (2) (44 minutes and 12 seconds)

• Chapter 21：Three-winding transformers, autotransformers and transformers (1) (41 minutes and 18 seconds)

• Chapter 22：Three-winding transformers, autotransformers and transformers (2) (51 minutes and 27 seconds)

• Chapter 23：Parallel operation of transformers 1 (47 minutes and 27 seconds)

• Chapter 24：Parallel operation of transformers 2 (49 minutes and 33 seconds)

• Chapter 25：Transformer transient process 1 (48 minutes and 48 seconds)

• Chapter 26：Transformer transient process 2 (46 minutes and 42 seconds)

• Chapter 27：Transformer part summary 1 (45 minutes and 8 seconds)

• Chapter 28：Transformer Part Summary 2 (52 minutes and 9 seconds)

• Chapter 29：Basic knowledge and structure of synchronous motor (1) (42 minutes and 21 seconds)

• Chapter 30：Basic knowledge and structure of synchronous motor (2) (40 minutes and 28 seconds)

• Chapter 31：Windings and electromotive force of AC motors (1) (40 minutes and 28 seconds)

• Chapter 32：Windings and electromotive force of AC motors(2) (44 minutes and 4 seconds)

• Chapter 33：Windings and electromotive force of AC motors(3) (46 minutes and 21 seconds)

• Chapter 34：Magnetomotive force of AC winding (1) (44 minutes and 59 seconds)

• Chapter 35：Magnetomotive force of AC winding (2) (47 minutes and 22 seconds)

• Chapter 36：Magnetomotive force of AC winding (3) (45 minutes and 22 seconds)

• Chapter 37：Magnetomotive force of AC winding (4) (47 minutes and 39 seconds)

• Chapter 38：Magnetomotive force of AC winding (5) (47 minutes and 15 seconds)

• Chapter 39：Magnetomotive force of AC winding (6) (46 minutes and 15 seconds)

• Chapter 40：Basic electromagnetic relations of synchronous generators (1) (39 minutes and 19 seconds)

• Chapter 41：Basic electromagnetic relations of synchronous generators (2) (38 minutes and 20 seconds)

• Chapter 42：Basic electromagnetic relations of synchronous generators (3) (39 minutes and 55 seconds)

• Chapter 43：Basic electromagnetic relations of synchronous generators (4) (45 minutes and 39 seconds)

• Chapter 44：Basic electromagnetic relations of synchronous generators (5) (42 minutes and 28 seconds)

• Chapter 45：Basic electromagnetic relations of synchronous generators (6) (47 minutes and 50 seconds)

• Chapter 46：Basic electromagnetic relations of synchronous generator(7) (37 minutes and 9 seconds)

• Chapter 47：Basic electromagnetic relations of synchronous generator(8) (34 minutes and 11 seconds)

• Chapter 48：Basic electromagnetic relations of synchronous generator(9) (40 minutes and 58 seconds)

• Chapter 49：Basic electromagnetic relations of synchronous generators(10) (38 minutes and 25 seconds)

• Chapter 50：Parallel operation of synchronous generators(1) (47 minutes and 5 seconds)

• Chapter 51：Parallel operation of synchronous generators(2) (46 minutes and 25 seconds)

• Chapter 52：Parallel operation of synchronous generators(3) (47 minutes and 0 seconds)

• Chapter 53：Parallel operation of synchronous generators(4) (49 minutes and 39 seconds)

• Chapter 54：Parallel operation of synchronous generators(5) (49 minutes and 35 seconds)

• Chapter 55：Parallel operation of synchronous generators(6) (49 minutes and 50 seconds)

• Chapter 56：Synchronous motors and synchronous condensers(1) (49 minutes and 54 seconds)

• Chapter 57：Synchronous motors and synchronous condensers(2) (48 minutes and 31 seconds)

• Chapter 58：Asymmetric operation of synchronous generators 1 (45 minutes and 4 seconds)

• Chapter 59：Asymmetric operation of synchronous generators 2 (48 minutes and 25 seconds)

• Chapter 60：Asymmetric operation of synchronous generators 3 (40 minutes and 8 seconds)

• Chapter 61：Asymmetric operation of synchronous generators 4 (47 minutes and 27 seconds)

• Chapter 62：Asymmetric operation of synchronous generators 5 (29 minutes and 47 seconds)

• Chapter 63：Asymmetric operation of synchronous generators 6 (48 minutes and 27 seconds)

• Chapter 64：Asymmetric operation of synchronous generators 7 (48 minutes and 23 seconds)

• Chapter 65：Asymmetric operation of synchronous generators 8 (49 minutes and 20 seconds)

• Chapter 66：The basic structure and basic working principle of three-phase asynchronous motor 1 (47 minutes and 17 seconds)

• Chapter 67：The basic structure and basic working principle of three-phase asynchronous motor 2 (31 minutes and 53 seconds)

• Chapter 68：Operating principle of three-phase asynchronous motor 1 (42 minutes and 50 seconds)

• Chapter 69：Operating principle of three-phase asynchronous motor 2 (47 minutes and 23 seconds)

• Chapter 70：Operating principle of three-phase asynchronous motor 3 (42 minutes and 26 seconds)

• Chapter 71：Operating principle of three-phase asynchronous motor 4 (45 minutes and 41 seconds)

• Chapter 72：Operating principle of three-phase asynchronous motor 5 (42 minutes and 11 seconds)

• Chapter 73：Operating principle of three-phase asynchronous motor 6 (46 minutes and 55 seconds)

• Chapter 74：Exercise explanation 1 (48 minutes and 1 seconds)

• Chapter 75：Exercise explanation 2 (41 minutes and 44 seconds)

• Chapter 76：Power, torque and operating characteristics of asynchronous motors1 (36 minutes and 11 seconds)

• Chapter 77：Power, torque and operating characteristics of asynchronous motors 2 (45 minutes and 33 seconds)

• Chapter 78：Power, torque and operating characteristics of asynchronous motors 3 (43 minutes and 35 seconds)

• Chapter 79：Power, torque and operating characteristics of asynchronous motors 4 (43 minutes and 1 seconds)

• Chapter 80：Starting of three-phase asynchronous motor 1 (42 minutes and 19 seconds)

• Chapter 81：Starting of three-phase asynchronous motor 2 (39 minutes and 3 seconds)

• Chapter 82：Speed ​​regulation of three-phase asynchronous motor 1 (36 minutes and 40 seconds)

• Chapter 83：Speed ​​regulation of three-phase asynchronous motor 2 (44 minutes and 51 seconds)

• Chapter 84：Other operating modes of asynchronous motors 1 (39 minutes and 35 seconds)

• Chapter 85：Other operating modes of asynchronous motors 2 (34 minutes and 56 seconds)

• Chapter 86：Operation of three-phase asynchronous motors and single-phase asynchronous motors under asymmetric voltage 1 (39 minutes and 35 seconds)

• Chapter 87：The basic working principle and basic structure of DC motor (44 minutes and 30 seconds)

• Chapter 88：Common problems with DC motors (47 minutes and 58 seconds)

• Chapter 89：DC generator 1 (41 minutes and 49 seconds)

• Chapter 90：DC generator 2 (25 minutes and 7 seconds)

• Chapter 91：DC motor1 (45 minutes and 34 seconds)

• Chapter 92：DC motor 2. (44 minutes and 31 seconds)