Starting characteristics of direct current motors powered by solar cells

Journal Article · Mon Mar 01 00:00:00 EST 1993 · IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States)

DOI:https://doi.org/10.1109/60.207405· OSTI ID:6543986

Singer, S ^[1]; Appelbaum, J ^[2]

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1. Univ. of Colorado, Colorado Springs (United States)
2. Lewis Research Center, Cleveland, OH (United States)

Direct current motors are used in photovoltaic systems. Important characteristics of electric motors are the starting to rated current and the torque ratios. These ratios are dictated by the size of the solar cell array and are different for the various dc motor types. The paper deals with the calculation of the starting to rated current ratio and starting to rated torque ratio of the permanent magnet, separately, series and shunt excited motors when powered by solar cells for the two cases: where (1) the system includes a maximum-power-point-tracker (MPPT) and (2) without an MPPT. Comparing these two cases, one gets a torque magnification of about 3 for the permanent magnet motor and about 7 for other motor types at rated design insolation. The calculation of the torques may assist the PV system designer to determine the advantage of including an MPPT in the system as far as the starting characteristics of the dc motors are concerned.

• OSTI ID: 6543986
• Journal Information: IEEE Transactions on Energy Conversion (Institute of Electrical and Electronics Engineers); (United States), Vol. 8:1; ISSN 0885-8969
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
ELECTRIC MOTORS
START-UP
PHOTOVOLTAIC POWER SUPPLIES
ELECTRIC CURRENTS
EQUATIONS
PHOTOVOLTAIC CELLS
SOLAR CELL ARRAYS
TORQUE
CURRENTS
DIRECT ENERGY CONVERTERS
ELECTRONIC EQUIPMENT
ENGINES
EQUIPMENT
MOTORS
PHOTOELECTRIC CELLS
POWER SUPPLIES
SOLAR EQUIPMENT
140600* - Solar Energy- Photovoltaic Power Systems