Title :
Magnification of starting torques of DC motors by maximum power point trackers in photovoltaic systems
Author :
Appelbaum, J. ; Singer, S.
Author_Institution :
NASA Lewis Res. Center, Cleveland, OH, USA
Abstract :
A calculation of the starting torque ratio of permanent magnet, series, and shunt-excited DC motors powered by solar cell arrays is presented for two cases, i.e. with and without a maximum-power-point tracker (MPPT). Defining motor torque magnification by the ratio of the motor torque with an MPPT to the motor torque without an MPPT, a magnification of 3 for the permanent magnet motor and a magnification of 7 for both the series and shunt motors are obtained. The study also shows that all motor types are less sensitive to solar insolation variation in systems including MPPTs as compared to systems without MPPTs
Keywords :
DC motors; permanent magnet motors; solar cell arrays; starting; torque; MPPT; maximum-power-point tracker; motor torque magnification; permanent magnet DC motors; series DC motors; shunt-excited DC motors; solar cell arrays; solar insolation variation; starting torque ratio; Couplings; DC motors; Magnetic flux; Permanent magnet motors; Photovoltaic cells; Photovoltaic systems; Solar power generation; Torque; Virtual manufacturing; Voltage;
Conference_Titel :
Energy Conversion Engineering Conference, 1989. IECEC-89., Proceedings of the 24th Intersociety
Conference_Location :
Washington, DC
DOI :
10.1109/IECEC.1989.74552
