Power supply device, electrical storage device, electric vehicle, and electric power system capable of switching between PFC control and MPPT control

摘要

A power supply device includes: an input determination section configured to determine which one of a commercial power supply and a power generator is an input power supply, and to generate a determination signal; a conversion section of a switching type configured to convert an input voltage into an output voltage; and a drive-signal generation section configured to be supplied with determination output from the input determination section, and to generate a switching drive signal for the conversion section, the drive-signal generation section being configured to serve as a power-factor correction control section and to generate the switching drive signal when the determination signal indicates that the commercial power supply is the input power supply, and being configured to serve as a maximum power point tracking control section and to generate the switching drive signal when the determination signal indicates that the power generator is the input power supply.

主权项

1. A power supply device comprising:
an input determination section configured to determine which one of a commercial power supply and a power generator is an input power supply, and generate a determination signal, wherein the input determination section is configured to receive, as an input voltage, an output voltage of a full-wave rectifier circuit and generate the determination signal based on variation with time in the received output voltage, wherein the input determination section is configured to determine the input power supply to be the commercial power supply, in case of a time period T1 in which the received output voltage is varied from 0 to peak voltage and a time period T2 in which the received output voltage is varied from peak voltage to 0 is equal; a conversion section of a switching type configured to convert the input voltage into an output voltage; and a drive-signal generation section configured to be supplied with determination output from the input determination section, and generate a switching drive signal for the conversion section, the drive-signal generation section configured to serve as a power-factor correction control section and generate the switching drive signal in an event that the determination signal indicates that the commercial power supply is the input power supply, and the drive-signal generation section configured to serve as a maximum power point tracking control section and generate the switching drive signal in an event that the determination signal indicates that the power generator is the input power supply.