Determining a phase and a frequency of an electric quantity of an operating electrical device
AssigneeSiemen Aktiengesellschaft
InventorHeng Deng
Life of this patent
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Abstract
A method and an apparatus for determining a phase and a frequency of an electric quantity being associated with an operation of an electrical device are described. The method comprises extracting a fundamental component of the electric quantity, calculating a positive sequence component of the electric quantity based on the extracted fundamental component, and determining the phase and the frequency of the electric quantity based on the calculated positive sequence component.
Claims14
A method for determining a phase and a frequency of an electric quantity being associated with an operation of an electrical device, the method comprising:
- extracting a fundamental component of the electric quantity;
- calculating a positive sequence component of the electric quantity based on the extracted fundamental component;
- and
- determining the phase and the frequency of the electric quantity based on the calculated positive sequence component.
An apparatus for determining a phase and a frequency of an electric quantity being associated with an operation of an electrical device, the apparatus comprising
- an extracting unit configured for extracting a fundamental component of the electric quantity;
- a calculating unit configured for calculating a positive sequence component of the electric quantity based on the extracted fundamental component;
- and
- a determining unit configured for determining the phase and the frequency of the electric quantity based on the calculated positive sequence component.
Dependencies are inferred from the claim text.