University of California, Irvine

Department of Electrical Engineering and Computer Science Industrial and Power Electronics

EECS166A and EECS267A Winter 2015

Instructor: K. Smedley TA: Roozbeh Naderi Grader: Yiming Ma Office: EH3432 Phone: 824-6710 Email: smedley@uci.edu, Lecture Schedule: Tue and Thursday 2:30-1:50PM, PSCB120 Discussion Session: Wednesday 1:00-1:50PM, ET201 Prof’s Office Hour: Tuesday 2-3PM (in class or at Office EH3432) Lab Schedule: Tuesday 6:00-7:50PM, Thursday 6:00-7:50PM, Friday2:00-

3:50PM TA’s Office Hour: Wednesday 2:00-3:00PM Midterm: Thursday Feb 12, in class, closed book Final: Friday, Mar 20, 10:30-12:30 pm, closed book Text: R. Erickson, Fundamental of Power Electronics, Kluwer Academic Publishing latest edition.

Course Syllabus Industrial and Power Electronics is a branch of electronics that studies how to use semiconductors to efficiently and precisely process power for industrial applications such as transmitting signals, driving motors, performing process control, etc. as well for renewable power generation such as converting raw solar and wind power to useful power. This course introduces high-frequency pulse-width modulation (PWM) power electronic circuits for power processing. You will learn basic circuit topologies, magnetic design, and control methods. You will also have the opportunity to design and build a power electronic circuit as well as to test its steady-state and dynamic properties as a lab project. I. Converters In Steady State (Ch1-6) II. Magnetics (Class notes) III. Converter Dynamics and Control (Class notes) Homework assignments (10%), Midterm (30%), Lab (30%), and Final (30%). ___________________________________________ * EECS166A students will get one step advantage in grade over EECS267A students. ** All graduate students will be given a grade according to their overall score (Not necessarily ≥ B).

Industrial and Power Electronics Laboratory ECE166A/267A Lab

Course Instructor: Professor Keyue Smedley Lab Teaching Assistant: Bin Wu

Time: Tue, Thu 6:00-7:50pm, Fri. 2-3:50PM Room: EH 1121(experiment) EH 1141(simulation)

Introduction This is the general introduction to the ECE 166A/267A lab. It contains information regarding the administration of the lab, the lab report format and the lab schedule. There are seven lab sessions all together. Lab 1 and Lab 2 are dedicated to the computer simulation of Buck Converter and Boost Converter. In Lab 3, Lab 4, Lab 5, Lab 6 and Lab 7 you will design and construct your own Boost Converter. You need to achieve the milestones in each lab session. We suggest 3 students to form a group. Group members should distribute the work and exhibit team work spirit. We’ll assign the final grade according to the quality of the work weighted by your contribution to the project, thus please mark team members contribution in each report, such as 30, 50%, 20%, which add up to 100%. 1. Lab Schedules: Week 3. Lab 1: PSPICE simulation of Buck Converter Week 4. Lab 2: PSPICE simulation of Boost Converter Week 5. Lab 3: Boost Converter Project: Design (schematics, PWM chip, and inductor) Week 6. Lab 4: Boost Converter project: build up the converter Week 7. Lab 5: Boost Converter project: open-loop test Week 8. Lab 6: Boost Converter project: closed-loop test Week 9. Lab 7: Boost Converter project: continue the test Location: Lab 1~2 at EH1141 Lab 3~7 at EH1121 2. Lab rules: Safety number one! All panels in the lab are always energized and the available high voltage utility outlets present a real danger to people and equipment.

Check the connection before switching on the power. Switch off the power before changing components and connections Make sure the polarity of the electrolytic capacitors and other components are correct Use appropriately sized conductors and resistors for the expected currents. No food and drinks are allowed in the lab at any time Clean your work space and return all equipment, hook-up wires and tools to their

original locations before leaving the lab Never leave any power supplies, scopes, meters or soldering irons on unattended

3. Pre-lab Requirement Pre-labs are required for the first three labs. Each group should submit a pre-lab report at the beginning of each lab. The pre-lab assignment will consist of the work that needs to be prepared in order to perform the experiment. Circuit diagrams, equations, simulation block diagrams and necessary calculations should all be done before the lab sessions and should be included in the pre- lab report. It will be graded by the lab TA as 30% of each lab report. 4. Lab Report

Lab reports are required for the first, second sessions and a final report is due after completion of all sessions. Each group should turn in the lab report at the beginning of

the next lab session. All reports should be formal and written as a technical report: technically correct, complete and concise. While completeness is important, it is not necessary to fatten up the report with superfluous writing. You should not spend extra time repeating the lab procedures, describing the equipment and so on. Please also be honest with the experimental results: get the data from your own simulation or circuit board.

General Lab Report Format: 4.1) TitlePage The title page should contain the lab session number, title, date, student names and ID numbers. Both group members should sign the lab report on the title page. 4.2) Introduction Explain the objective of the experiment, the problems being investigated and the method of the investigation. 4.3) Body The body part should contain the calculated and experimental results, graphs, tables, plots, measured waveforms. All analysis of the data should be done in this part. 4.4) Discussion and conclusion Discuss the problems encountered and solutions here. You can also include your valuable thoughts here. Write a short conclusion to summarize the lab reports. 6. Lab Grading: Lab Total: 100 points Lab1+Prelab：15 points, Lab2+Prelab： 15 points, Lab3 pre-lab：10 points Final report ：60 points Absence from each lab session will result in -10 points.

Final Report and Report Grading Criteria: 1. (1 points) Title of project, names and IDs of group members 2. (1 points) List of specifications of the project. 3. (8 points) Brief description of the functions of the major blocks (for example, the power

stage, the control stage) in the boost converter and, brief design and calculation of the major components in the blocks.

4. (3 points) Simulation result for this boost converter at 30V input and 20W rated output power 1. (can be extracted from your Lab2 report)

5. (2 points) System schematics, including open-loop and closed-loop 6. (3 points) Bill of material, list of the components used. 7. (20 points) Scope captures, including driving signals, inductor current (represented by the

voltage on the resistor in series with the inductor), and others you think are important. Analyze the ripple current, related with your inductor and switching frequency. Draw the Vds waveform on the MOSFET.

8. (15 points) Data collection and processing/plotting, including the efficiency vs load (for 2. Vg=20V and 40V), and other data you think is important to reflect the system quality.

9. (5 points) Write about the debugging and testing process, such as problem encountered, interesting findings.

10. (2 points) Suggestions to improve the project.