General information

Subject type: Mandatory

Coordinator: Joan Triadó Aymerich

Trimester: Third term

Credits: 6

Teaching staff: 

Salvador Alepuz Menendez

Teaching languages

  • Catalan


Specific skills
  • CE22: Understand the applications of power electronics.

  • CE24: Train to design analog, digital and power electronic systems.


The purpose of the Power Electronics subject is to train students so that they are able to understand, interpret and perform calculations in the most basic Power Electronics circuits, in their four conversions (CC/CC, CA/ CC, CC/CA, CA/CA), in addition to distinguishing between the different electronic devices within this discipline. Only the permanent regime will be considered, the transitory regime will not be the subject of study. The most common applications will also be presented.






Power Electronics within Industrial Electronics

Power Electronics vs. Signal Electronics

Ideal switch

Utility and applications


Content title 2: DEVICES.


Diode. Thyristor. TRIAC. GTO. BJT. MOSFET. IGBT.

Technological aspects and principle of operation of the components

Passive components L and C. Transient operation.

Component selection criteria

Heat dissipation

Calculation formulas for Power Electronics.



Content title 3: CC / CC CONVERSION.


DC and DC converters without and with insulation for switched power supplies. Permanent operation. Transfer function.

DC / DC converters for DC motor control (choppers). Types of converters. Operation in 1, 2 and 4 quadrants. Permanent transfer function.

Symmetrical DC / DC converters for switched power supplies. Topologies and operation in permanent regime.


Content title 4: AC / DC CONVERSION.


Electrical system. Three-phase and single-phase network.

Types of rectifiers. Half wave and full wave. Single-phase and three-phase. Uncontrolled, semi-controlled and fully controlled.

Operation with different types of load.


Content title 5: CC / CA CONVERSION.


Types of investors. Self-employed and non-self-employed. Single-phase and three-phase.

Switching strategies. Square, voltage cancellation, PWM.

Harmonic analysis.


Content title 6: AC / CA CONVERSION.


Direct AC / AC converters. Cyclo-converter, phase control, sequence control, matrix converter.

Indirect AC / AC converters. Intermediate current and voltage circuit.

Frequency converters. Applications with induction motors controlled with frequency converters.


Evaluation system

The ordinary final grade (QFO) of the subject is calculated as follows:

QFO = Ex1 0,35 + Ex2 0,35 + P 0,2 + T 0,1

Minimum grades:

Written tests (Ex1 and Ex2): 3,0

Practicals (P): 5,0

Work (T): 5,0

In the event that any of the grades for Ex1, Ex2, P or T activities is below the corresponding minimum mark, the ordinary final grade (QFO) of the subject will be limited to 5,0.

All activities are compulsory. In the event that any of the activities are not carried out, the ordinary final grade (QFO) of the subject will be NP.

In case of not passing the subject in the ordinary assessment, there will be an extraordinary recovery session for Ex1 and Ex2 activities, in the form of an examination (ExR) of all the contents of the subject. The grade of this recovery (ExR) will replace that of Ex1 and Ex2 activities within the subject assessment, as indicated in the formula below, provided it is higher. P and T activities are not recoverable.

The extraordinary final grade (QFE) of the subject is calculated as follows:

QFE = ExR 0,7 + P 0,2 + T 0,1

Minimum grades:

ExR: 3,0

P: 5,0

T: 5,0

In the event that any of the grades in the ExR, P or T activities is below the corresponding minimum mark, the extraordinary final grade (QFE) of the subject will be limited to 5,0.



S. Alepuz and R. Safont. Power Electronics Notes. ESUPT Tecnocampus.

S. Alepuz. Power Electronics Practices. ESUPT Tecnocampus.

S. Alepuz. Collection of Power Electronics problems. ESUPT Tecnocampus.

Power electronics: converters, applications and design, N. Mohan, W. Robbins, T. Undeland, Ed. Wiley, 3rd ed., 2002. ISBN: 9780471226932. United Kingdom

Power electronics: circuits, devices and applications, M. Rashid, Ed. Pearson, 3rd ed., 2004. ISBN: 9789702605324. Mexico.


Power electronics problems. A. Barrado, A. Lázaro, Ed. Pearson, 1st ed., 2007. ISBN: 9788420546520. Spain.

Power electronics: components, types and equipment. S. Martínez, JA Gualda, Ed. Auditorium, 1st ed. 2006. ISBN: 9788497323970. Spain.