DESCRIPTION
Sprayer is equipment which is used for spraying insecticides, pesticides, and fungicides. An agriculture Sprayer is a Sprayer that has been built or converted for agricultural use usually for aerial application of pesticides (crop dusting) or fertilizers (aerial to dressing). Sprayers cover a wide variety of agricultural jobs and pest applications, including control of competing weeds and unwanted bushes and trees, control of diseases and insects, application of plant nutrients, and broadcasting of many crops. A pesticide may be a chemical substance, biological agent (such as a virus or bacterium), antimicrobial, disinfectant or device used against any pest. Conservation of non-renewable resources with an objective of attaining sustainable developments has led to an incredible advancement in both understanding and employing sun's vast energy to benefit mankind.
The Sprayer eliminates the conventional style of hand spraying powder pesticide, thereby reducing hazard of diseases and saves time. Solar cells are typically combined into modules that hold about 40 cells; a number of these modules are mounted in PV arrays that can measure up to several meters on a side. These cells are built into concentrating collectors that use a lens to focus the sunlight onto the cells. Because of this, a typical commercial solar cell has an efficiency of 15%-about one-sixth of the sunlight striking the cell generates electricity.

This system consist of two modes, which is continuous conduction mode and discontinuous mode, continuous mode the diode connected in series with the secondary winding gets reverse biased due to the induced voltage. The configuration of the proposed converter not only reduces the current stress but also constrains the input current ripple, which decreases the conduction losses and lengthens the lifetime of the input source. In addition, due to the lossless passive clamp performance, leakage energy is recycled to the output terminal. Hence, large voltage spikes across the main switches are alleviated, and the efficiency is improved.
The interleaved flyback is the work-horse of power supply topologies. It works quite well for a wide range of inputs, low to medium power levels, and high-voltage inputs and outputs. Semiconductor component count is low as there is only a primary switch and output rectifier. It is, however, power limited due to the high currents that it generates. Its usefulness is usually -limited to less than 100 watts. Above this power level, designers start considering other topologies.
In high-power fly backs, the power dissipations in the semiconductors are high enough that single packages for each are no longer viable. Multiple parallel packages may be used, but balancing current to equalize the temperature becomes an issue.

Buck regulators use multiple phases to mitigate this issue. Power stages are repeated and the inputs and outputs have common connections. The phases are offset in time to provide capacitor ripple current cancellation and a higher effective switching frequency.

Developing interleaved flyback structure with voltage doubler module for industrial voltage applications. Low switching frequency operation, higher efficiency operation with the lowest input voltage, lower input
*
current ripple, and easy tuning with load is implemented.
The product utilises a diaphragm pump which is driven by a
PMDC motor Design specification
• Unloaded weight 5 kg
• Pump ratings
Max rated voltage 12V Max rated current 0.8 A
• Panel Rating
Vos22.2 V

Vload 17.4 V . I load 0.75 A
• Battery specifications 12 V 8AH
• Tank capacity = 16 Litres (made of PVC plastic)
With solar panel the tank capacity will be sprayed with in 4 minutes 30 seconds. With solar power charge the battery can give a backup over 4 hours. With conventional model with fuel tank filled it will take 3 hours to complete the fuel.
Comparison of conventional and proposed

REFERENCE
1] R. J.Wai and R. Y. Duan, "High step-up converter with coupled-inductor, "IEEE Trans. Power Electron., vol. 20, no. 5, pp. 1025-1035, Sep. 2005
[2] R. J. Wai, W. H. Wang, and C. Y. Lin, "High-performance stand-alone photovoltaic generation system," IEEE Trans. Ind. Electron., vol. 55,no. 1, pp. 240-250, Jan. 2008.
[3] R. J. Wai and W. H. Wang, "Grid-connected photovoltaic generation system," IEEE Trans. Circuits Syst. I, Reg. Papers, vol. 55, no. 3, pp. 953— 964, Apr. 2008.
[4] Y. Xiong, X. Cheng, Z. J. Shen, C. Mi, H. Wu, and V. K. Garg, Prognostic and warning system for power-electronic modules in electric, hybrid electric, and fuel-cell vehicles," IEEE Trans. Ind. Electron,, vol. 55, no. 6,pp. 2268-2276, Jun. 2008.
[5] J. T. Bialasiewicz, "Renewable energy systems with photovoltaic power generators: Operation and modeling," IEEE Trans. Ind. Electron., vol. 55,no. 1, pp. 2752-2758, Jul. 2008.
[6] K. Jin, X. Ruan, M. Yan, and M. Xu, "A hybrid fuel cell system," IEEE Trans. Ind. Electron., vol. 56, no. 4, pp. 1212-1222, Apr. 2009. [7] L. Gao, R. A. Dougal, S. Liu, and A. P. Iotova, "Parallel-connected solar PV system to address partial and rapidly fluctuating shadow

conditions, "IEEE Trans. Ind. Electron., vol. 56, no. 5, pp. 1548-1556,
May 2009.
[8] B. Yang, W. Li, Y. Zhao, and X.He, "Design and analysis of a grid
connected photo voltaic power system," IEEE Trans. Power Electron., vol.
25, no. 4, pp. 992-1000, Apr. 2010.
[9] C. T. Pan and C. M. Lai, CCA high-efficiency high step-up converter
with low switch voltage stress for fuel-cell system applications," IEEE
Trans. Ind. Electron., vol. 57, no. 6, pp. 1998-2006, Jun. 2010

CLAIMS
1. To claim the tank of 16 litres made up of PVC plastic of blue in colour used in the experimental set up.
2. To claim the pump rating of maximum voltage 12v and current 0.8 A used in the experimental set up.
3. To claim the panel rating of voltage 22.2 V
V load 17.4 V
1 load 0.75 A used in the experimental set up.
4. To claim the Battery specifications 12 V 8AH used in
experimental set up.