Electricity: power supply or regulation systems – In shunt with source or load – Using a three or more terminal semiconductive device
Patent
1998-09-11
2000-08-29
Han, Jessica
Electricity: power supply or regulation systems
In shunt with source or load
Using a three or more terminal semiconductive device
323299, 323906, 320102, G05F 1613
Patent
active
061113913
ABSTRACT:
A controller for a solar electric generator that permits the generator to produce power substantially at its maximum capacity. Power is transferred from the generator to a temporary electric storage device that is periodically partially drained of power to maintain the temporary electric storage device at a voltage corresponding to the voltage needed by the generator to provide maximum generator power. The electric power drained from the temporary storage device is used to charge conventional batteries. In a preferred embodiment, the temporary storage device is a capacitor that is part of a buck regulator operating at 50 kHz with duty factor control between 0% and 100%. This buck topology switching type regulator provides the periodic draining. In the preferred embodiment control of the duty factor of the buck regulator is utilized to limit current, to prevent battery over charging, to test for the voltage corresponding to maximum power, and to operate the solar generator at is maximum power voltage. When operated at its maximum power operating point, the output to the battery is constant power, providing greater battery charge current than prior art controllers.
REFERENCES:
patent: 5270636 (1993-12-01), Lafferty
patent: 5530335 (1996-06-01), Decker et al.
Han Jessica
Ross John R.
Ross III John R.
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