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Academics

Electrical Engineering ( M.S. )

 Nanjing Normal University   April 11, 2016

1. Training/Research Orientation

  • Power System and Automation
  • Power Electronics and Electric Drives
  • Electrical Theory and New Technology

2. Program Duration and Credit

Three years generally, the maximum school years are not longer than 5 years (including the extension time) .
32 redits of courses in total, at least 20 credits of academic courses.

3. Core Courses and Introduction

Electrical Network Theory
Network theory is one of the main theoretical foundations of the discipline of electrical engineering. By studying this course， the graduate students can complement and extend electrical circuit theory, understand and master the applications of graph theory in circuit analysis, large and complex network analysis, active and passive electrical network synthesis methods, nonlinear network analysis method and so on. Through experiments and teaching cases, students can get further knowledge of computer application in electrical network analysis and synthesis. Main content of the course includes analysis and synthesis of electric networks. Network analysis mainly introduces the systematic analysis method of complex circuit, including envelope diagram on the basis of science and technology, networking equation methods, network analysis, network analysis of state variable, multi-and multi-port network, source, source-free formula. Comprehensive part focuses on the realization of the function of network analysis and second-order energy-saving way, including network based passive port network properties and synthesis, properties and synthesis of passive two-port networks, properties and synthesis of active networks, approximation and sensitivity analysis. Moreover, the curriculum also includes content analysis for nonlinear electric network.

Power System Stability and Control
By discussing the dynamic characteristics and stability control method of power system in the case of disturbance, graduate students are normally expected to master the methods of modeling and stability analysis of power system. And graduate students will obtain the ability of scientific thinking, theoretical research, as well as to solve practical problems with the practice of power system simulation and design. The contents include:

  • Teachers introduce the basic theory of power system stability and control, such as mathematical model, numerical simulation method, dynamic equivalence, static stability analysis of power system, transient stability analysis, low frequency oscillation in power system, power system voltage stability.

  • Modeling and simulation analysis of power system stability of wind power, photovoltaic or single machine infinite bus power system.

  • Group discussion and communication of “August 14 North America power grid blackout”.

Power Electronics
The Power Electronics is the electronics applied in power technique. It is usually called the Power Electronic Technique in practical engineering applications. It studies the electric energy conversion and is controlled by using different power electronic devices, circuit topologies and control methods. So it is an edge subject that has the close relationship to electronics, automatic control and electric power. The Modern Power Electronic Technique focuses on the application of lately developed full-controlled power electronic device such as the Power-MOSFET, IGBT, MCT, PIC, etc., which has the promising future in this field. The basic structure and principle of those power electronic devices, their main parameters, application features, as well as their driving circuits and protection methods will be explained in detail. Moreover, some important basic converter circuits, such as DC to DC, DC to AC, AC to AC, AC to DC converters, including their principle and features, the current and voltage wave analysis, the load influence on circuit running, as well as the essential design and calculation of the converter circuits under hard PWM and soft PWM switching modes will be separately introduced. After learning this subject, students should have an acquaintance with some important full-controlled power electronic devices and their features and applications, and be familiar with the structure and principle of the basic power converter circuits and their control methods. They should get the basic theories of power electronic technique, and gain mastery of the basic analysis methods and the skills, so that they can have the fundament for the work in engineering technique and scientific research related to the power electronic technique.

Technology and Application of Embedded System
This course is a concrete understanding and application of digital control technology based on previous related courses. Through the study of the basic concept, hardware structure, operating system, engineering module and development process of embedded system（ARM or DSP), foundation has been made for future related research and development work. Through the study of the course, firstly, students can understand the basic concepts, characteristics and classification of embedded system technology and then grasp the basic methods of the embedded system software and hardware design. Students can either learn how to analyze current popular ARM-based embedded microprocessor and open-source code real-time operating systems C/OS in detail or have a basic understanding of the DSP chip technology, hardware structure, instruction system and special instructions by learning this course thoroughly. Students can also be familiar with the development process of digital signal processing and controller design using DSP chips. Finally, combined with the specific development experiment of embedded system, students can grasp the design and the development methods of the embedded systems.

AC/DC Motor Drive Control System
This course introduces different kinds of speed control systems widely used in present industrial production. Based on the automatic control theory, and targeted at the AC/DC motor, this course can help students master the compositions, principles, characteristics and design methods of AC/DC electric drive control system. This course is a significant way to develop students' abilities of logical thinking and synthetic analysis.
This course includes both AC and DC electric drive control systems. This course is beginning with the easily understood DC electric drive control system. Students study the basic knowledge of single closed-loop and speed-current double closed-loop DC speed control system, and master static and dynamic performances analysis methods of negative feedback close loop control systems. The design and adjustment methods of PID regulator are the emphases of this part. Students establish a solid foundation in analysis and design of control system form the learning of DC speed control system. On this basis, students study the AC speed control system further, which contains the static and dynamic models of asynchronous motor, and speed adjustment methods of variable voltage variable frequency(VVVF) control, slip frequency control, vector control(VC) and direct torque control(DTC). The static and rotational coordinate transformation methods are the emphases of this part. The methods used in asynchronous motor can also extend to synchronous motor. Students can obtain comprehensive abilities of theoretical analysis and systematic design of AC/DC electric drive control system form this course.

Engineering Electromagnetic Field
Magnetic field engineering(EMF) course is one the the basic theoretic courses of electrical engineering.Through learning this course,students get a hang of the primitive principles of electromagnetic field, and meanwhile grip the elementary EMF analytical methods, which they can link together with relative theory to handle real life EMF engineering problems. Also, in combination with experiments and teaching cases, learners can further acquaint themselves the real applications.
This course consists of three parts,namely EMF basic theory、EMF numerical analysis、EMF application.EMF basic theory covers EMF elementary equation，low frequency EMF theory，high frequency electromagnetic pulse theory,in the meantime presents in details the vector analysis，static electric field，constant magnetic field and time-variant field. Wereas numerical analysis presents the mathematical algorithms in applications of EMF. EMF application mainly talks about real life cases and their analysis.

4. Supervisors

Enrong Wang, Yang Zhao, Pindong Sun, Xueli Chen, Jinlong Zhang, Yunong Shen, Huaren Wu, Caihong Zhao, Qi Wang, Yong Ju, Xiaohui Li, Gang Ma, Jianfei Yang, Jiquan Yang, Rong Ju, Tongzhou Ji.