Home Master Program "Electrical - RENEWABLE ENERGY SOURCES"

Master’s program in Renewable Energy Sources

I Semester


Associate Prof. eng. Hr.Tahrilov

The subject "Renewables" belongs to the group of mandatory disciplines for the students from the specialty "Electrical engineering" and is taught in the 1-st semester. The aim of the course is to improve students' knowledge about RES received during their bachelor's degree and therefore it covers wider physical bases of power conversion. The methods, design features and technical characteristics of systems for converting renewable energy into heat and electricity are also taught. A special attention is put to the development of Bulgaria in respect of RES. The courses are tailored to contemporary literature and illustrated with videos, brochures, demonstrations, computer programs, models and other, based on multimedia technology. Inputs are made from the subjects of the degree "Bachelor":

1. Physics.

2. Material knowledge.

3. Theoretical Electrical Engineering.

4. Electricity.

5. Electrical machinery.

6. Electrical apparatus.

7. Renewable energy sources.

8. Solar Energetics.

9. Wind energetics.


Associated Prof. eng. K. Georgiev

     The course "Economic analysis of renewable energy sources" is part of the curriculum in the specialty "Renewables" (Electrical Engineering) for the Master’s degree.

Its aim is to familiarize the students with the basic principles and consistency of implementation of economic analysis of renewable energy sources, using the approach "Analysis of costs and benefits" (Benefit-Cost Analysis). This approach, which is adopted and recommended by the European Commission, Guide to Cost-Benefit Analysis of Investment Projects, Final Report, 16/06, 2008, treats RES as investments that provide long-term environmental and other solutions / effects for the society as a whole.

The basic topics of analysis of discounted cash flows (revenues and expenses) are discussed, which are generated during the lifetime of the RES (design, construction, operation and maintenance). The basics of risk analysis that accompanies investing in renewable energy are given. We also discuss the specifics of the approach application in the economic analysis of the main types of renewable energy - photovoltaic (solar), wind, wave, geothermal, hydrogen and bio-energy sources.




chief assistant Dr engineer B. Dimitrov


Studying the course "Electronic devices in renewable energy", students acquire basic knowledge of electronic devices applied in RES. The discussed training material covers electronic devices, which are used for the building of electrical installations with renewable energy sources: invertors, controllers, converters, uninterruptible power supply systems and more. The aim is all students to know the mode of operation, features and peculiarities and their application in RES.

 The course provides theoretical knowledge concerning the main processes and patterns in electronic devices. It also includes practical application, addressing unified modules developed and offered by various manufacturers.


Connections with other disciplines:

1.      Theoretical Electrical Engineering.
2. Power management systems.
3. Digital and microprocessor engineering in electrical engineering.
4. Converter

The course provides knowledge of subjects:
1. Renewable energy sources.
2. Wind energy.
3. Solar energy.





PhD engineer B. Aprahamyan, chief assistant PhD engineer B. Dimitrov



The studied in the following discipline material is an upgrade of the knowledge gained in the Bachelor’s degree in the subjects Electrical Apparatus I, II, III part". Apparatus and MANAGEMENT AND PROTECTION SYSTEMS are considered, which are not studied, or studied in insufficient depth in previous degree. The course examines intelligent circuit breakers, programmable controllers, and etc. having applications in renewable energy sources (RES) and beyond.

Connections with other disciplines:
1. Electrical apparatus.
2. Theoretical Electrical Engineering.
3. Power systems
for management.
4. Digital and microprocessor
machines in electrical engineering.
5. Converter technology.

The course provides knowledge of subjects:
1. Renewable energy sources.
2. Wind energy.
3. Solar energy.




Ph.D eng. M. Marinova


The course ”Modeling Electrical devices and technology" introduces students of master's degree of higher education with opportunities for modeling various fields in electrical devices, analysis and synthesis of schemes for management processes and technologies, numerical methods for analysis of processes and their optimization in static and dynamic mode. It is based on knowledge of the disciplines "Calculus", "Programming", "Computer modeling of electrical devices", "Power Machines", "Electrical apparatuses", "Electrothermia", "Electrotechnology", "Electronics", "RES", studied in ACS.

The course discusses specific classical devices, technologies related to them, as for their analysis modern methods for modeling and programming environments are adapted. Emphasis is put on developing models for specific electrical devices and electric technologies, and analyzing them using modern computer programs such as COMSOL Multiphysics, OrCAD PSpise, Multisim, COSMOS Design Star and other.






PhD engineer M. Panayotov


The course is a continuation of the material taught in the courses of the main disciplines of "Renewable Energy Sources" and is related to the absorption of specific knowledge and skills in researching and developing systems which convert wind energy into electricity.

The program provides a thorough examination of the characteristics of wind turbines, combining theoretical with applied training. The examined structural features, attributes and transient electrical generators, diagrams of connecting to different systems, aim to enhance significantly the knowledge of a Master’s course graduates.

The application part of the course is oriented to design activities based on the use of advanced specialized software products for work with wind energy systems. Their assimilation by the students provides significant opportunities in modern engineering practice. Providing this, in the part of laboratory training, the application of software products, specialized in the design of a wind energy projects are studied.


The program has connections with the following disciplines:
1. Renewable energy sources - basic course
2. Electronic devices in RES
3. Electro
-technological devices modeling
4. Electrical machines




PhD engineer L. V. Dimitrov


The purpose of this course is to introduce the advanced monitoring and diagnosis of renewable energy sources (RES) to the students.

Here are discussed the the main methods for monitoring the technical condition of the RES, the components of which are AC generators, power transformers, switchgear and autonomous systems, and how computers process the signals by which this condition is diagnosed. Subject of the studied discipline are also the methods for monitoring and diagnostic of the mechanical part of the wind components and basic concepts related to the condition of power electronics used in their operation. The principles and basic dependences in the compilation of calculation models for diagnosis the presence of failures in wind power aggregates are also discussed.

The material is illustrated with videos, prospects, computer programs and models for the use of multimedia equipment.


PhD engineer Hr. Tahrilov, chief assistant Dr. engineer B. Dimitrov


The discipline completes the course of training in renewable energy sources and is related to the acquiring of specific knowledge and skills in research and development of systems which convert solar energy into electricity. The analysis of the factors determinating the characteristics of the photovoltaic modules is made ​​with modern software. Design and problems related to the development of photovoltaic stations with different power are examined and evaluated at each stage of the project. Attention is paid to the issues of the design, price and safety of these systems.

Laboratory exercises allow practical acquisition of the necessary skills when working with photovoltaic systems. Connections:

1.                  Renewable energy sources - main course.

2.                  Electronic devices in RES.

3.                  Modeling of electro technological devices.



PhD engineer At. K. Ivanov


The discipline "Special course on renewable energy sorces" is part of the compulsory subjects for the students in "Electro technics" ("RES") and it’s taught in the second semester. The discipline aims to improve students' knowledge obtained from the course "Basic course in renewable energy" and the other subjects taught in the first semester of the Master’s degree and in Bachelor’s degree as here are discussed specific problems of different methods of application and use of renewable energy sources (RES). In particular those are problems with use of hydropower units, heat pumps, use of biomass, biofuels production and other. Teaching materials are consistent with the recent advances in using the RES, illustrated with videos, prospects, models, visiting the operating systems and more.

Connections with other disciplines:

1. Physics
2. Material
3. Electrical Machines
4. Electrical Apparatus
5. Hydropower
6. RES



chief assistant PhD Mariya Zheleva


The discipline is for students who continue their education for a Master’s degree, subject "Electrical Engineering (RES)" and the curriculum is oriented toward their interests. The lecture cycle aims to develop in the future professionals the ability to understand the legal institutions and legal techniques, related to business and industrial activities.

In view of this three rounds of tasks are formed: 1/ introduction of basic law concepts and its institutional, legal and procedural aspects, with emphasis on the hierarchy of sources; 2/supply of basic knowledge of business entity, forms and management, and management of activities for environmental protection, relationships with contractors, staff and public powers; 3/detection of the specificity and regulation of intellectual property, industrial property, copyright and all derivative rights.