Learning objectives
1) Knowledge and understanding
-knowledge of architectures and circuit operation for static energy conversion
-knowledge of operational amplifier as single device, limitations, and applications.
-understanding of benefits and limitations of negative feedback in opamp-based circuits
-knowledge of circuit simulator and simulation techniques of opamp-based analog circuits and power converters.
2) Applying knowledge and understanding
-analysis and design of a basic power converter
- analysis and design of an analog circuit with opamp.
-simulation of opamp-based analog circuits and power converters
Prerequisites
Analysis of electric circuits (Elettrotecnica)
Continuous-time Signals (Segnali e sistemi)
Course unit content
Power Electronics
1 Introduction
1.1 Applications and history. Short review on semiconductor power devices; classification of power converters. Specs: input and output distortion, efficiency, regulation.
2 Single-phase rectifiers
2.1 Single-wave rectifiers; full-bridge rectifiers.
2.2 Low-pass filters
2.3 Full-wave rectifiers with center-tapped transformer
3 Switching DC/DC regulators
3.1 Buck, Boost, Buck-boost in continuous mode
3.2 Brief notes on discontinuous mode.
3.2 Introduction to converter control with PWM
4 Single-phase DC/AC converters (inverters)
4.1 Half and full-bridge inverter
4.2 Introduction to converter control with PWM
5 Simulation of power converters with a circuit simulator.
Analog Electronics
1. Introduction
1.1 Analog and digital signals
1.2 Linearity and non-distortion conditions
2 Ideal Operational Amplifier (opamp)
2.1 Definitions and specs
2.2 Condition of virtual short circuit at the opamp inputs
2.3 Opamp applications: inverting and non-inverting amplifier; integrator; differentiator; summing amplifier; current generator; instrumentation amplifier
2.4 Linear Voltage Regulator
3. Real Opamps
3.1 Static opamp limitations
3.2 Dynamic opamp limitation
4 Feedback in opamp-based amplifiers
4.1 Negative feedback: reduction of gain sensitivity
4.2 Analysis of the non-inverting and inverting amplifier as feedback systems.
4.3 Gain-bandwidth product
4.4 Stability issues
5 Power amplifiers
5.1 Definitions: output power, efficiency, and harmonic distortion
5.2 Linear (class-A) and switching (class-D) amplifiers
6 Simulations of opamp circuits with a circuit simulator.
Full programme
- - -
Bibliography
S. Franco, “Design with Operational Amplifiers and Analog Integrated Circuits” McGraw-Hill
M. Rashid, "Power electronics", 3rd ed., Prentice-Hall, ISBN 0-13-122815-3.
Teaching methods
Lectures (theory, problem solving, and circuit simulations)
Assessment methods and criteria
Written test and oral exam
Other information
Web pages of the course with
-teaching materials (slides and manuscripts)
-example of written tests
at http://elly.dii.unipr.it/
Students are asked to subscribe to the mailing list of the course
