Description
hardware flow control. It is an ideal choice in the field of industrial automation.
There is no doubt that power system is a very traditional major in electrical engineering
. After graduation, you are more likely to enter power companies at all levels affiliated to the
State Grid or China Southern Power Grid Co., Ltd. Have you seen that there are many people in
this forum who talk about electricity? The salary is high, so it can be regarded as an iron rice bowl
with guaranteed income regardless of drought or flood; while power electronics and power transmission are a brand-new
major, which is an interdisciplinary subject of electricity, electronics and control theory, involving circuit topology,
automatic theory, analogue, digital and electrical synthesis. Knowledge, practical ability and practical experience determine
the success or failure of the project to some extent. After graduation, students majoring in power electronics generally enter
companies or research institutes, such as the world”s top power electronics companies, such as Emerson, GE, Simens, ABB
, Philips, Oslang, etc., and of course a bunch of domestic companies, generally engaged in switching power supplies and UPS. ,
frequency converter, reactive power compensation, and active filtering, etc. To sum up, if you want to have a good iron job at least for
now, study power systems; if you want to engage in a cutting-edge and challenging sunrise industry, and are not afraid of hardship,
I hope you can study power electronics and electric transmission
after all the hardships. If you don”t get an official position in a power company after three or five years after studying power systems,
your salary at that time may not be as good as that of students who work in power electronics. Power electronics and electric transmission are a brand-new subject. Most of the teachers in China have a background in electrical machinery and may not be able to provide practical guidance.
However, the importance of a mentor is to provide you with broad research resources and lead you into the door of this subject. There are
still some domestic institutions with strong strengths in this subject: the first is undeniably Zhejiang University, with professors Xu Dehong,
Qian Zhaoming, Lu Zhengyu, etc.; the second is Xi”an Jiaotong University, with the highly respected teacher Wang Zhaoan and his two
disciples Liu Jin Jin, Yang Xu; the last one is Yan Yangguang from Nanjing University of Aeronautics and Astronautics and his student
Professor Ruan Xinbo. Of course, the most awesome school in the world is the National Power Electronics Systems Research Center
at Virginia Tech in the United States, where the most awesome Professor Fred.C.Lee Zeyuan Li is located; Of course, the University of
Colorado at Boulder in the United States is not weak either, especially in the direction of digital control of power electronics. Erickson and
Maksimovic, authors of the famous power electronics textbook Fundamental of Power Electronics, are leading figures here. Students who
are interested in engaging in power electronics research abroad can apply to these two schools. In addition, the FREEDM Research Center
of North Carolina State University is also conducting research on power electronics and power electronic devices. There is Professor Alex Q.
Huang [1], the first domestic IGBT manufacturer, and IGBT experts. Inventor Jayant Baliga. However, it is a pity that power electronics is currently
only a technology and cannot be called a scientific subject. That is because a complete and accurate theoretical basis has not yet been formed.
Because if there is no profound theoretical foundation, it cannot be called science. This discipline is currently mainly engaged in the research of
circuit topology and application technology. The current theoretical basis is linear control method and circuit engineering. However, power
electronics should not be regarded as a linear system, because power devices work in a switching state, which is a strongly pathological
nonlinear system. Therefore, it can be said that the current power electronic system based on linear control theory is completely insufficient
and can even lead to some wrong conclusions in some cases. There are currently several research directions in power electronics technology:
High-frequency switching power supply
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149992-01 3500/33 Spare 16-Channel Relay Output Module
9199-00002 A6120 EMERSON Control card piece
135489-01 3500/42M I/O module
125840-01 3500/15 High Voltage AC Power Input Module
330130-045-00-00 3300 XL Extension Cable
135489-03 3500/42M I/O Module with Internal Barriers (4 Velomitor channels) and Internal Terminations
9199-00003 A6210 EMERSON I/O/DO module
125840-01 3500/15 High Voltage AC Power Input Module
125768-01 3500/20 RIM I/O Module
149992-01 Spare 16-Channel Relay Output Module
A3120/022-000 CSI3120 EMERSON Bearing-Vibration Monitor
3500/60 Resistance temperature detector
1900/55 General Purpose Equipment Monitor
3500/33 16 Channel Relay Module
330101-00-25-10-02-00 3300 XL 8 mm Proximity Probes, Metric
330130-040-00-00 3300 XL Standard Extension Cable
330130-085-00-05 3300 XL Standard Extension Cable
330180-X1-05 Modified Proximitor Sensor
A6110 9199-00001 EMERSON I/O/DO module
3500/25 Enhanced Keyphasor Module
3500/20 Rack Interface Module
3500/93 series system display
3500/42M Position Monitor
3500/53M Electronic Overspeed Detection System
A6140 9199-00058 emerson Digital I/O module
3500/32 4-channel relay module
3500/45 4-channel Position Monitor
3500/05-02-02 Axial displacement probe
A6220 9199-00009 EMERSON Ethernet module
135489-04 I/O Module With Internal Barriers And Internal Terminations
136703-01 3500/50 I/O Module with Internal Barriers and Internal Termination
135473-01 Proximitor/Seismic Monitor Module
125840-01 High Voltage AC Power Input Module
133396-01 Overspeed Detection I/O Module
138708-01 Shaft Absolute I/O Module with Internal Terminations
125760-01 Data Manager I/O Module
A6370D EMERSON Analog quantity input card
125680-01 Proximitor I/O Module
330980-51-05 XL NSv Proximitor Sensor
330850-90-05 3300 XL 25 mm Proximitor Sensor
136180-01 Communication Gateaway Module
149369-01 Enhanced Keyphasor Module
133388-01 3500/53 Overspeed Detection Module
A6410 EMERSON Output module
127610-01 3500/15 AC Power Supply Module
176449-02 Proximitor/Seismic Monitor
125744-02 Rack Interface Module
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