Shareable Certificate. Power Electronics Specialization. Intermediate Level. Hours to complete. Available languages. What you will learn Understand what a switched-mode converter is and its basic operating principles. Know how to derive an averaged equivalent circuit model and solve for the converter efficiency.
Instructor rating. Offered by. University of Colorado Boulder CU-Boulder is a dynamic community of scholars and learners on one of the most spectacular college campuses in the country. Start working towards your Master's degree. If you are admitted to the full program, your courses count towards your degree learning.
Learn More. Week 1. An introduction to power electronics and to the Coursera specialization. Video 5 videos. Applications and Examples of Power Electronics 1m. Reading 4 readings. Entering formulas in homework assignments 10m. If you have problems with the Coursera system 10m. Buck converter simulation files 10m. Materials for the LTspice simulation assignment 10m. Quiz 1 practice exercise. Homework Assignment 1: Ch.
Week 2. How to find the ideal steady-state voltages and currents of a switched-mode converter. Video 4 videos. Reading 1 reading. Sample problems with solutions 10m. Homework Assignment 2: Ch. Week 3. Video 6 videos. Homework Assignment 3: Ch. Reviews 4. About the Power Electronics Specialization. Frequently Asked Questions When will I have access to the lectures and assignments? If you don't see the audit option: The course may not offer an audit option.
You can try a Free Trial instead, or apply for Financial Aid. The course may offer 'Full Course, No Certificate' instead.
This option lets you see all course materials, submit required assessments, and get a final grade. This also means that you will not be able to purchase a Certificate experience. What will I get if I subscribe to this Specialization? What is the refund policy? Is financial aid available? Learn Anywhere. We have already discussed that power electronic devices are a combination of converter and controller where the converter functions according to the control signal generated by the controller.
A power electronic converter is composed of power semiconductor devices controlled by integrated circuits. An important aspect of converters is signal conditioning. Signal conditioning offers signals of the pure form i. In a general way, it is said that getting an absolutely clear signal is impossible.
But we can reduce harmonics to some extent using a simple low pass LC filter. Static Power converters execute power conversion quite efficiently. Power electronic switches have solid-state devices with components like inductors and capacitors. Generally, inductors and capacitors exhibit negligible power loss characteristics in comparison to resistors.
The classification of power converters are as follows :. We have already learned in basic electronics that the devices that convert the AC signal into DC signal are known as rectifiers. Diode Rectifiers : This rectifier circuit changes applied ac input voltage into a fixed dc voltage.
Either a single-phase or three-phase ac signal is applied at the input. These are mainly used in electric traction and in electrochemical processes like electroplating along with in battery charging and power supply. These are also used in welding and UPS related services. Phase Controlled Rectifiers : Unlike diode rectifiers, phase-controlled rectifiers are designed to convert a fixed value of ac signal voltage into a variable dc voltage.
Here line voltage operates the rectifier hence these are sometimes known as line commutated ac to dc converters. Similar to diode rectifiers, here also the applied ac signal can be a single-phase or three-phase ac signal. Its major applications are in dc drives, HVDC systems, compensators, metallurgical and chemical industries as well as in excitation systems for synchronous machines.
The converters that convert the dc signal of fixed frequency present at the input into a variable dc signal at the output are also known as choppers. Here the achieved output dc voltage may have a different amplitude than the source voltage. The output is controlled by a low power signal that controls these semiconductor devices from a control unit.
Here forced commutation is required to turn off the semiconductor device. Generally, in low power circuits power transistors are used while in high power circuits thyristors are used. Choppers are classified on the basis of the type of commutation applied to them and on the basis of the direction of power flow.
Some major uses of choppers are in dc drives, SMPS, subway cars, electric traction, trolley trucks, vehicles powered by battery, etc. The devices that are designed to convert the dc signal into ac signal are known as inverters. The applied input is a fixed dc voltage that can be obtained from batteries but the output obtained is variable ac voltage.
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