Presentation on theme: "Ramjee Lal Meena Department of Electrical Engineering"— Presentation transcript:
1 Role of Power Electronics for Safety and Conservation of Electrical Energy Ramjee Lal MeenaDepartment of Electrical EngineeringDelhi Technological University, Delhi-42
2 ORGANISATION OF THE PRESENTATION Introduction to Power ElectronicsPower Semiconductor Device (PDS)Power ConverterPower ProcessorAdvantage of Power ElectronicsApplications of Power Electronics for Electrical EnergyContd.
3 Contd.Emphasis of applications of Power Electronics in the area of Safety, Conservation, Power Quality and Renewable SourcesPractical possible use of PE at homeTrends of Power ElectronicsNaMPET : GOI Mission
4 Power ElectronicsPower Electronics is the electronics applied to conversion and control of electrical power.Range of Power ScaleMilliwatts(mW) Megawatts(MW) Gigawatts(GW)The primary task of Power Electronics is to process and control flow of electrical energy by supplying voltages and currents in a form that is optimally suited for user loads
5 Power Semiconductor Devices Power DiodeUni-polar,uncontrolled,switching deviceused in applications such as rectification andcircuit directional current control.
7 SCR: Silicon Controlled Rectifier This semi-controlled device turns on when a gate pulse is present and the anode is positive compared to the cathode.When a gate pulse is present, the device operates like a standard diode.When the anode is negative compared to the cathode, the device turns off and blocks positive or negative voltages present.The gate voltage does not allow the device to turn off
8 Gate Turn Off Thyristor The GTO, unlike an SCR, can be turned on and off with a gate pulse.One issue with the device is that turn off gate voltages are usually larger and require more current than turn on levels.These devices, because of developments in IGCT technology are not very popular in the power electronics realm.They are considered controlled, uni-polar and bi-polar voltage blocking
9 TRIACThe TRIAC is a device that is essentially an integrated pair of SCR connected in inverse-parallel on the same chip.[
10 Power Transistors Power BJT Power MOSFET IGBT( Insulated Gate Bipolar Transistor )
26 FRIENDSThe word FRIENDS stands for Flexible Reliable and Intelligent Electrical eNergy Delivery SystemsProblem of Safety, Conservation and poor power quality can be solved by power electronics based FRIENDS devicesMain FRIENDS devicesStatic Current Limiter (SCL)Static Circuit Breaker (SCB)Static Transfer Switch (STS)26
31 GTO and VCB based SCB topology ZnO ArresterIzIbHigh-Speed VCBIswIfSupply SideLoad SideBack-to-back GTO Switch
32 Thyristor based STS topology PreferredSourceAlternativeSourceZnOZnOIz2Iz1ZfZfTppTanippianIs2Is1ipniapTapFAULTTpnSw1IaSw2CriticalLoad
33 Thyristor based STS topology PreferredSourceAlternativeSourceZnOZnOIz2Iz1ZfZfTppTanippianIs2Is1ipniapTapFAULTTpnSw1IaSw2CriticalLoad
34 NaMPET: National Mission on Power Electronics Technology NaMPET is a national mission programme launched in November 2004 by the Department of Information Technology(DIT) under Ministry of Communications & Information Technology, Government of India.This five year programme is implemented through the Nodal Centre at the Centre for Development of Advanced Computing, Thiruvananthapuram.Premier Academic Institutions in the country, Manufacturing Industries and User Industries of Power Electronics Systems participate in this programme.A National Steering Committee comprising of eminent experts from different agencies and institutions in India guides the activities of NaMPET.
35 NaMPET: VisionTo provide the country with capability to become a dominant player in Power Electronics Technology at the international level.This is a National level R&D Programme facilitating Research, Development, Deployment and Commercialization of Power Electronics Technology by enhancing the indigenous R&D expertise and infrastructure in the country with active participation from academic institutions and industries.
36 NaMPET: Focus Areas Power Quality Improvement / Smart power for Digital Economy.Electric traction / Electric & Hybrid Electric Vehicles / Automotive Electronics.Distributed power generation / Renewable energy and Micro generator control.Advanced Magnetics / Energy Storage Systems.New topologies for Converter / Inverter applications.New generation sensors for PE applications.Modeling / Simulation packages.Standard PE module with the state of the art developments
37 ConclusionsThe main contributions of the Power Electronics and FRIENDS Devices for Safety, conservation and improving the power quality can be summarized as follows:Protection both appliance and life against Fault and unhealthy conditions of Electrical Energy SystemMitigation of voltage sags and swellsPower supply of different reliability
38 Conclusions contd. Interface to dispersed generation systems Flexibility in Configuration of the SystemLoad Leveling and Energy ConservationNaMPET: Vision