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Application of flywheel battery in solar power system

GHOUSIA COLLEGE OF ENGINEERING RAMANAGARAM. Application of flywheel battery in solar power system. Und er guidance:. ASST.PROF. DEPARTMENT OF ELECTRICAL &ELECTRONICS ENGG. INTRODUCTION.

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Application of flywheel battery in solar power system

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  1. GHOUSIA COLLEGE OF ENGINEERING RAMANAGARAM Application of flywheel battery in solar power system Under guidance: ASST.PROF. DEPARTMENT OF ELECTRICAL &ELECTRONICS ENGG.

  2. INTRODUCTION • It is designed in which the flywheel battery saves and releases energy when necessary. • Flywheel battery resolves the problem of incapability of solar power supply at night and delays the time of supply. • Output characteristics of photovoltaic cell are optimized in this system. • Quality & reliability in power supply is greatly improved.

  3. Modes of Operation • Mode 1: No energy is required by the load, and all energy generated by the PV array is stored in the flywheel. • Mode 2: The PV energy is greater than the load and the surplus is stored in the flywheel. • Mode 3: The PV energy is less than the load and the flywheel supplements the necessary energy to match the load. • Mode 4: No PV energy is generated and the flywheel supplies the load until fully discharged

  4. Modes of operation

  5. PHOTOVOLTAIC CELL • A solar cell or photovoltaic cell is a device that converts sunlight directly into electricity by the photovoltaic effect. • Solar cell is configured as a large-area p-n junction made from silicon. • If a piece of p-type silicon is placed in contact with a piece of n-type silicon, then a diffusion of electrons occurs from the region of high electron concentration to low electron concentration. • when the electrons diffuse across the p-n junction, they recombine with holes on the p-type side.

  6. The electric field established across the p-n junction creates a diode that promotes charge flow, known as drift current. • This region where electrons and holes have diffused across the junction is called the depletion region. • This region no longer contains any mobile charge carriers known as the space charge region.

  7. Diagram of Flywheel energy storage unit

  8. Merits of Flywheel energy storage unit • Highly efficient, Non-polluting. • Reliable, Long life. • Easily and inexpensively maintained, and safe. • Much higher charging and discharging rate. • Able to cyclic discharged to zero energy without degrading • The storage capacity is independent of temperature fluctuations. • Much higher energy storage efficiencies. • High power output.

  9. POWER REGULATION AND CONDITIONING • Regulator circuitry is required to cyclically bring the energy storage system on- and off-line to maintain a constant supply of energy available to the load. • If the PV array output dropped below a certain threshold, the PV would be disconnected from the load to be replaced by the flywheel battery which would begin to decelerate and discharge. • If the PV output rise above a certain threshold, the flywheel battery would be disconnected from the load and would begin to accelerate & charge from a port of the array's output. • Once the flywheel reached its design speed, it would not require any further charging due to its long rundown time-constant.

  10. FLYWHEEL BATTERY USED IN SOME DIFFERENT AREAS ARE SHOWN BELOW : Wasted heat is storage

  11. Storage system

  12. Satellite Placed in

  13. Head phone battery

  14. CONCLUSION • Reduce cost of flywheel rotor and advanced magnetic bearing. • Mass will produced with quality. • Develop light weight vacuum containment vessel. • Reduced over all system weight. • With the proposed system, the PV array can satisfy the load for a prolonged duration.

  15. REFERENCES • Tang Shuangqing Zuo Weiwei Liao Daoxum A new flywheel energy storage system for distributed generation. • Jiancheng Zhang; Zhiye Chen; Lijun Cai; Yuhua Zhao. "Flywheel energy storage system design for distribution network", IEEE on Power Engineering Society Winter Meeting, 2000, Vol. 4: 2619 –2623. • Yuanfang Zhou, Renshan Xiao, Jingzhang Liao, Shizuo Li. "Design Researches on Rare-Earth Permanent Magnetic Brushless D.C. Motors", Guangxi Elctric Power Technology in China, 1996, Vol. 2:15-20. • Reinke, L.J. "Tutorial overview of flywheel energy storage in a photovoltaic power generation system", vol.2: 1161 –1164.

  16. THANK YOU

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