PARAMETER ESTIMATION FOR VOLTAGE MEASUREMENTS IN NOISY ENVIRONMENTS
卷宗概要
发明人
Mohsen ASOODAR
IPC 分类
CPC 分类
A method for estimating an ON-state resistance of a semiconductor switch in an electric power converter is provided. The method comprises obtaining, from a measurement circuit, an ON-state voltage of the semiconductor switch. The method further comprises obtaining an ON-state current through the semiconductor switch. The method further comprises obtaining a selected frequency, extracting voltage harmonics of the selected frequency from the ON-state voltage, and extracting current harmonics of the selected frequency from the ON-state current. The method further comprises integrating the voltage harmonics over a period of time, to obtain an integrated voltage. The method further comprises integrating the current harmonics over the same period of time, to obtain an integrated current. The method further comprises determining an ON-state resistance estimate of the semiconductor switch based on the integrated voltage and the integrated current.
原文（中文）
A method for estimating an ON-state resistance of a semiconductor switch in an electric power converter is provided. The method comprises obtaining, from a measurement circuit, an ON-state voltage of the semiconductor switch. The method further comprises obtaining an ON-state current through the semiconductor switch. The method further comprises obtaining a selected frequency, extracting voltage harmonics of the selected frequency from the ON-state voltage, and extracting current harmonics of the selected frequency from the ON-state current. The method further comprises integrating the voltage harmonics over a period of time, to obtain an integrated voltage. The method further comprises integrating the current harmonics over the same period of time, to obtain an integrated current. The method further comprises determining an ON-state resistance estimate of the semiconductor switch based on the integrated voltage and the integrated current.