JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD

Prerequisite

Power Electronics, Renewable Energy Systems

Course Objectives

to prepare the students to

• introduce the characteristics of various types of renewable energy sources and converters.
• explain the importance of storage and sizing of hybrid systems.
• introduce the control issues of isolated systems.
• explain the harmonics, power quality, voltage imperfections, power injection issues on the grid by integrating renewable energy sources.

Course Outcomes

the student should be able to:

• Identify the characteristics of renewable energy sources and converters.
• Analyze the importance of storage and sizing of hybrid systems.
• Realize the problems related to isolated systems.
• Analyze the challenges faced by the grid by integrating renewable energy sources.

UNIT - I

REVIEW OF CHARACTERISTICS OF POWER SOURCES: Basic review of power generation from wind - Solar PV - Thermal - Small hydro - Biomass power strategies in each of these energy conversion systems - Review of maximum power point tracking techniques in solar PV and wind (perturb & observe, hill climbs, incremental conductance).

UNIT - II

CONVERTER TOPOLOGIES: DC/DC converter (buck, boost, buck boost) - DC/AC inverters (sine, triangular, PWM techniques) - Phase locked loop for inverters.

UNIT - III

HYBRID SYSTEMS: Advantages of hybrid power systems - Importance of storage in hybrid power systems - Design of hybrid power system based on load curve - Sizing of hybrid power systems.

UNIT - IV

ISOLATED SYSTEMS: Control issues in isolated systems for voltage and frequency - Small signal stability in isolated power systems - Importance of storage and dump load in isolated systems.

UNIT - V

ISSUES IN INTEGRATION OF RENEWABLE ENERGY SOURCES: Overview of challenges in integrating renewable sources to the grid - Impact of harmonics on power quality - Need to maintain voltage within a band and fluctuations in voltage because of renewable integration - Power inverter and converter technologies - Mechanism to synchronize power from renewable sources to the grid - Overview of challenges faced in designing power injection from offshore generation sources - Challenges in modeling intermittent nature of renewable power in a power system.

TEXT BOOKS:

• 1. Power Electronics, Converters, Applications and Design” by N. Mohan; T.M. Undeland; W.P. Robbins. 1995, John Wiley and Sons.
• 2. Renewable Energy Integration Challenges and Solutions Series: Green Energy and Technology Hossain, Jahangir, Mahmud, Apel (Eds.). R19 M.TECH M. TECH. PE/PEED

REFERENCES:

• 1. Integration of Alternative Sources of Energy Felix A. Farret, M. Godoy Simões, December 2005, Wiley-IEEE Press. R19 M.TECH M. TECH. PE/PEED M. TECH – I YEAR – II SEM. (PE/PEED)