Direktstromwandlerschaltung

Details

Veröffentlichungs-Nr.

EP4734350

Anmeldetag

10. Juni 2024

Veröffentlichung

26. Dezember 2024

Rechtsraum

EP

IPC

H02M7/48, H02M3/155

Abstract

To control a charging period of a capacitor in a charging-and-discharging circuit and contribute to achieve a continuous mode. A rectification circuit includes a first capacitor and a first reactor, and performs full-wave rectification and low-pass filtering on a single-phase alternating-current voltage to acquire a rectified voltage. A voltage between a first power source line and a second power source line is inputted to an inverter. A charging-and-discharging circuit includes a charging circuit and a discharging circuit. The discharging circuit includes a second capacitor provided between the first power source line and the second power source line. The charging circuit boosts the single-phase alternating-current voltage having undergone the full-wave rectification or the rectified voltage to charge the second capacitor for the charging period. The charging period has a duration that is set depending on a phase of the single-phase alternating-current voltage without depending on an amplitude of an input current inputted to the rectification circuit. When a voltage of the first reactor decreases, both of a start point and an end point of the charging period shift toward a delay phase side with respect to the phase. When a voltage of the first capacitor increases, both of the start point and the end point shift toward the delay phase side with respect to the phase.

Anmelder

Firma

Daikin Industries, Ltd.

Land

🇯🇵 Japan

Fachgebiete