Control and Tuning Methods in Switched Mode Power Converters

By Prof. Santanu Kapat   |   IIT Kharagpur
Learners enrolled: 764
Switch mode power converters (SMPCs) play the central role in energy-efficient power conversion in emerging applications, such as electric vehicles, data centers, renewable energy, industrial automation, etc. In this context, selection of suitable control and modulation techniques of SMPCs is very important to meet challenging requirements in terms of transient performance, efficiency, line and load regulation, disturbance rejection, etc. While majority of commercial controller implementations are based on pulse width modulation and small-signal analysis, increasing switching frequencies, linking in part to wide bandgap devices, provide the opportunity to increase operating bandwidth and enhance performance. This course (i) presents an overview of conventional modulation and control methods, (ii) identifies small-signal performance limits, (iii) discusses large-signal based control approaches and (iv) compares strategies for controller tuning. Comparison among tuning methods illustrate how large-signal based control tuning methods can significantly improve performance and efficiency of SMPCs followed by the need for digital and mixed-signal control implementation for future power electronics converters.

INTENDED AUDIENCE  :M.Tech, Ph.D. as well as final year B.Tech students from AICTE approved institutes, design engineers from power management and power electronics industries, such as TI, STMicroelectronics, INTEL, Qualcomm, GE, NXP, Mahindra Electric, HCL, TCS, etc.

PREREQUISITES  :Qualification (i) BE/B.Tech in Electrical/Electronics Engg. (degree completed or final year UG students) or (ii) PG M.Tech in Power Electronics or Power Systems or Control Systems (degree enrolled or completed) or (iii) one year or more experience in power electronics or power management converters.

INDUSTRY SUPPORT  :TI, STMicroelectronics, INTEL, Qualcomm, GE, NXP, Mahindra Electric, TCS, HCL Technology, Microchip Technology
Course Status : Upcoming
Course Type : Elective
Duration : 12 weeks
Start Date : 26 Jul 2021
End Date : 15 Oct 2021
Exam Date : 24 Oct 2021
Enrollment Ends : 02 Aug 2021
Category :
  • Electrical, Electronics and Communications Engineering
  • Power Systems and Power Electronics
Credit Points : 3
Level : Undergraduate/Postgraduate

Course layout

Week 1: Switched mode power converters and MATLAB simulation
Week 2: Modulation techniques in SMPCs
Week 3: Fixed frequency control methods
Week 4: Variable frequency control methods
Week 5: Modeling and Analysis techniques in SMPCs
Week 6: Small-signal performance analysis
Week 7: Small-signal design and tuning of PWM voltage mode control
Week 8: Small-signal design of current mode control
Week 9: Large-signal model and nonlinear control
Week 10: Boundary control for time optimal recovery
Week 11: Large-signal controller tuning method
Week 12: Performance comparison and simulation

Books and references

[1] S. Kapat and P. T. Krein, “A Tutorial and Review Discussion of Modulation, Control and Tuning of High-Performance DC-DC Converters based on Small-Signal and Large-Signal Approaches”, IEEE Open Journal of Power Electronics, vol. 1, pp. 339 - 371, Aug. 2020.
[2] R. W. Erickson and D. Maksimovic, Fundamentals of Power Electronics, 3rd Ed., Springer, 2020.
[3] P. T. Krein, Elements of Power Electronics, Indian Edition, Oxford University Press, 2012.

Instructor bio

Prof. Santanu Kapat

IIT Kharagpur
Dr. Santanu Kapat received the M.Tech. and Ph.D. degrees in Electrical Engineering (EE) from IIT Kharagpur, India, in 2006 and 2010, respectively. He was a Visiting Scholar with the ECE Department, University of Illinois at Urbana-Champaign, USA during 2009 to 2010, and a Research Engineer with GE Global Research, Bengaluru from 2010 to 2011. Since August 2011, he has been with the EE Department (EED), IIT Kharagpur, where he is presently an Associate Professor. From July to November 2019, he was with the EED, IIT Delhi (on LIEN from IIT Kharagpur). His research interests include power management converters and high-performance digital control, applications to 48V-to Direct converters, data center, LED drivers, DC micro-grid, fast chargers and BMS. Dr. Kapat was the recipient of the INSA Young Scientist and INAE Young Engineering Award in 2016, and DAE Young Scientist Research Award in 2014. He has been serving as the Associate Editor, IEEE Trans. Power Electronics, IEEE Trans. Circuits and Systems-II, and IEEE Journal of Emerging and Selected Topics in Power Electronics.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 24 October 2021 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Kharagpur .It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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