Title :
On power-sharing of solar-based hybrid motor-drive systems
Author :
Hadley, Brian ; Mirafzal, Behrooz ; Ionel, Dan
Author_Institution :
Dept. of Electr. & Comput. Eng., Florida Int´´l Univ., Miami, FL, USA
Abstract :
In this paper, a solar-based hybrid adjustable-speed pump, which has been developed in the laboratory, is used to investigate the power-sharing in hybrid (dual-input) motor-drive systems. The laboratory test setup contains a DC-DC module connected to the DC-bus capacitors of a 2.5hp 230V PWM-based adjustable-speed motor-drive. The experimental results demonstrate that the power-sharing of a Photovoltaic (PV) array/DC-DC converter is not a function of motor speed in hybrid solar-based motor-drives, as long as the power contribution of the AC-grid stays above zero. In these conditions, the PV-DC-DC module behaves like a current source, and the dynamic behavior of the motor is decoupled from the dynamic behavior of the AC-grid, given that the PV-DC-DC module can provide the motor load.
Keywords :
DC-DC power convertors; PWM power convertors; motor drives; power capacitors; power grids; solar cell arrays; variable speed drives; AC-grid; DC-DC converter; DC-bus capacitor; PV array; PV-DC-DC module; PWM-based adjustable-speed motor-drive; laboratory test setup; photovoltaic array; power 2.5 hp; power-sharing; solar-based hybrid adjustable-speed pump; solar-based hybrid motor drive system; voltage 230 V; AC motors; Arrays; Brushless motors; Capacitors; Converters; Permanent magnet motors; Power generation; DC-DC module; Power-sharing; photovoltaic; solar-based hybrid motor-drive;
Conference_Titel :
Energy Conversion Congress and Exposition (ECCE), 2010 IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-5286-6
Electronic_ISBN :
978-1-4244-5287-3
DOI :
10.1109/ECCE.2010.5617940
