ABSTRACT:
This work
deals with the utilization of solar photovoltaic (SPV) energy in the brushless
DC (BLDC) motor driven water pump. A DC-DC boost converter, used as an intermediate
power conditioning unit plays a vital role in efficiency enhancement of SPV
array and soft starting of the BLDC motor with proper control. The speed
control of BLDC motor is performed by PWM (Pulse Width Modulation) control of
the voltage source inverter (VSI) using DC link voltage regulator. No
additional control or current sensing element is required for speed control. The
behavior of proposed pumping system is demonstrated by evaluating its various
performances through MATLAB/simulink based simulation study.
KEYWORDS:
1.
Solar PV
2.
BLDC motor
3.
Boost converter
4.
Soft starting
5.
PWM
6.
VSI
7.
Speed control
SOFTWARE: MATLAB/SIMULINK
Fig.1
Configuration of PV array fed BLDC motor-pump.
EXPECTED SIMULATION RESULTS:
Fig.2
Starting and steady state performances of solar PV array
Fig.3
Starting and steady state performance of boost DC-DC converter
Fig.4
Starting and steady state performance of brushless DC motor-pump
Fig.5
Dynamic performance of solar PV array.
Fig.6
Dynamic performance of boost DC-DC converter
Fig.7
Dynamic performance of brushless DC motor – pump
CONCLUSION:
The SPV Array fed boost converter based
BLDC motor driven water pump has been proposed and its suitability has been
demonstrated by analyzing its various performance indices using MATLAB based
simulation study. A simple, efficient and economical method for speed control
of BLDC motor has been suggested, which has offered absolute elimination of
current sensing elements. The proper selection of SPV array has made the boost
converter capable of tracking MPP irrespective of weather conditions. An
optimum design of the boost converter has been presented. The safe starting of brushless
DC motor has been achieved without any additional control. The desired performance
of proposed system even at 20% of standard solar irradiance has justified its
suitability for solar PV based water pumping.
REFERENCES:
[1] R. Kumar and B. Singh, “Solar PV
array fed Cuk converter-VSI controlled BLDC motor drive for water pumping,” 6th
IEEE Power India Int. Conf. (PIICON), 5-7 Dec. 2014, pp. 1-7.
[2] M. A. Elgendy, B. Zahawi and D. J.
Atkinson, “Assessment of the Incremental Conductance Maximum Power Point
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[3] J.V. Mapurunga Caracas, G. De
Carvalho Farias, L.F. Moreira Teixeira and L.A. De Souza Ribeiro,
“Implementation of a High-Efficiency, High-Lifetime, and Low-Cost Converter for
an Autonomous Photovoltaic Water Pumping System,” IEEE Trans. Ind. Appl.,
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[4] N. Mohan, T. M. Undeland and W. P.
Robbins, Power Electronics: Converters, Applications and Design, 3rd ed.
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[5] M. H. Rashid, Power Electronics Handbook:
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