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Grid tied inverters and associated control techniques have gained importance in the domain of distributed generation. Different methods of control have been compared in literature depending upon the ability to meet THD limits, damping offered to resonant oscillations and stable operation. Multiple loop methods compared to their single-loop counterparts have proved to be highly effective for meeting...
A DC-link capacitance estimation method is presented for a three-phase voltage-source converter. The measured phase currents and DC-link voltage of the converter are used in formulation of the input and output signals for the estimator. The estimator is based on the ordinary least squares method. The capacitance can be estimated during the startup of the converter or while the converter is in normal...
This paper describes a 12-bit zero-crossing based pipeline 100-MS/s ADC. The prototype ADC, fabricated in a 90-nm CMOS process, occupies 0.32 mm2. The capacitor mismatch is calibrated by decision boundary gap estimate algorithm that runs in the background. It achieves an ENOB of 10.2 bits for a 49 MHz input signal and dissipates 6.2 mW from a 1.2V supply for a FOM of 53fJ/step.
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