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Abstract:
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The presentation will concern digital control for power factor correction in which the difference with standard solutions is that the micro controller used in the design will not have full digital signal processing functions. Due to the low amount of resources available for control delays will be present throughout the system. Discrete time modeling is natural to the converter, as the pulse width modulator is an inherently digital device, which gives a basis to model all the delays. Using effective control can reduce the size of the converter and improve the power density of the product. This will make it easier to satisfy standards dealing with the thermal and spatial relations within the power converter. Control additionally has the capability to reduce component stress by limiting waveforms, like the capacitor voltage, so less voltage and current rated, cheaper components can be used. This gives an idea of the interrelations between electrical design, thermal design, and control design.
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