Chopper-amplifier for the voltage of a photovoltaic power source

Details Chopper-amplifier for the voltage of a photovoltaic power source Chopper-amplifier for the voltage of a photovoltaic power source

1998-02-13

1999-11-09

Tso, Edward H.

Electricity: power supply or regulation systems

In shunt with source or load

Using choke and switch across source

323285, G05F 110, G05F 140

Patent

active

059821574

ABSTRACT:
In this booster, the voltage across the terminals of the photovoltaic power source (1) is regulated as a function of a reference voltage (V.sub.ref) which is chosen to be substantially equal to the voltage corresponding to the maximum value of the voltage-power curve of this source. The reference voltage generated in the reference generator (9) is compared to the voltage (V.sub.sc) of the source (1), the result is sampled and influences the duty cycle of a control signal (F.sub.c) applied to the switching transistor (7). The latter is responsible for chopping the current flowing from the source to the load (accumulator 6) through an inductor coil (4) and a diode (5).

REFERENCES:
patent: 3970919 (1976-07-01), Butcher
patent: 4291266 (1981-09-01), Portmann
patent: 4580090 (1986-04-01), Bailey et al.
patent: 4730287 (1988-03-01), Yoshino et al.
patent: 5747967 (1998-05-01), Muljadi et al.
patent: 5801519 (1998-09-01), Midya et al.
patent: 5822278 (1998-10-01), Ohshima et al.
Elektronik, vol. 39, No. 9, Apr. 27, 1990, p. 150/151 XP000116206 Rittenbruch F -A: "Solar-Akkulader Mit Nur Einer Solarzelle".

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