Phasenstromrekonstruktionsvorrichtung eines Wechselrichters und Verfahren

Details

Veröffentlichungs-Nr.

EP3062428

Aktenzeichen

EP16157575

Anmeldetag

26. Februar 2016

Veröffentlichung

6. Juni 2018

Erteilung

6. Juni 2018

Rechtsraum

EP

IPC

H02M1/00H02M7/5395

Abstract

Methods and apparatus are presented for sampling low side inverter phase currents, in which current sampling is selectively delayed in a given PWM cycle by a non-zero sampling delay time value from a nominal sample time if the middle pulse width value is less than a non-zero first threshold to facilitate adequate signal settling for accurate current measurement, and if a middle total continuous on-time near the end of the given PWM cycle is less than a non-zero second threshold, the middle total continuous on-time is selectively extended by adding a non-zero adjustment offset time value to a middle pulse width value for a next PWM cycle.

Anmelder

Firma

Rockwell Automation Technologies, Inc.

Land

🇺🇸 USA

Fachgebiete