Siemen Aktiengesellschaft Patent applications |
Patent application number | Title | Published |
20140369087 | DETERMINING A PHASE AND A FREQUENCY OF AN ELECTRIC QUANTITY OF AN OPERATING ELECTRICAL DEVICE - 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. | 12-18-2014 |
20120223743 | Time Base Generator and Method for Providing a First Clock Signal and a Second Clock Signal - A time base generator and method for providing a first clock signal and a second clock signal comprising generating the first clock signal at a first clock frequency, dividing the first clock frequency by a first integer to produce a first auxiliary signal, dividing the second clock signal by a second integer to produce a second auxiliary signal, generating an error signal by individually weighting and comparing cycle durations or phasing of the first and second auxiliary signals, and generating the second clock signal by a voltage-controlled oscillator controlled by the error signal such that two clock signals of slightly different frequencies with defined time or phase delay are provided. | 09-06-2012 |