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Solar Load Voltage Tracking for Water Pumping: An Algorithm

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Abstract

Maximum power is to be harnessed from solar photovoltaic (PV) panel to minimize the effective cost of solar energy. This is accomplished by maximum power point tracking (MPPT). There are different methods to realise MPPT. This paper proposes a simple algorithm to implement MPPT lv method in a closed loop environment for centrifugal pump driven by brushed PMDC motor. Simulation testing of the algorithm is done and the results are found to be encouraging and supportive of the proposed method MPPT lv .

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Abbreviations

D :

Switching duty cycle of the converter

E b , V:

Motor back EMF

I a , A:

Load current

I a ′, A:

I a referred to panel side

I mp , A:

Panel current for maximum rated power

I p , A:

Panel side current

I ph or I sc , A:

Panel short circuit current

K b , V/r/s:

Motor back EMF constant

MPPT:

Maximum power point tracking

MPPT lv :

Maximum power point tracking by monitoring load voltage

MPPT pp :

Maximum power point tracking by monitoring panel power

P a , W:

Load side power

P adir :

Load side power without MPPT converter

P m , W:

Panel side maximum rated power

P p ,W:

Panel side power

PMDC:

Permanent magnet dc

PV:

Photo voltaic

R, Ω:

Resistive load

R’, Ω:

R referred to panel side

R a , Ω:

Motor armature resistance

T, Nm:

Motor torque

V a ,V:

Load voltage

V’ a ′, V:

V a referred to panel side

V oc , V:

Panel open circuit voltage

V mp , V:

Panel voltage for maximum rated power

V p , V:

Panel side voltage

ω, r/s:

Motor/pump speed

y :

Transformation ratio of the converter (y = D/(1–D))

References

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Acknowledgments

Authors acknowledge and thank for the support and encouragement rendered by their corresponding institutions, Sri Dharmasthala Manjunatheshwara College of Engineering and Technology, Dharwad and National Institute of Technology Karnataka, Surathkal.

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Authors and Affiliations

  1. Department of Electrical and Electronics Engineering, Sri Dharmasthala Manjunatheshwara College of Engineering and Technology, Dharwad, 580002, India

    M. Kappali

  2. Electrical and Electronics Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575025, India

    R. Y. Udayakumar

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  1. M. Kappali
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Correspondence to M. Kappali.

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Kappali, M., Udayakumar, R.Y. Solar Load Voltage Tracking for Water Pumping: An Algorithm. J. Inst. Eng. India Ser. B 96, 159–164 (2015). https://doi.org/10.1007/s40031-014-0136-6

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  • DOI: https://doi.org/10.1007/s40031-014-0136-6

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