Sensorless Control of a Single-Phase AC–DC Boost Converter Without Measuring Input Voltage and Current

It is well-known that the accurate measurement of input voltage and current, as feedforward feedback terms, plays a crucial role in nonlinear controller design for power factor compensation an AC-DC boost converter. This paper addresses problem simultaneous estimation current from output full-bridge In lossless model system, those variables are unobservable when control zero. To overcome this, system dynamics xmlns:xlink="http://www.w3.org/1999/xlink">immersed proper form by new filtered transformation. The phase amplitude voltage, along with globally estimated fifth-dimensional estimator. Unlike some existing results, stability proposed estimator does not rely on xmlns:xlink="http://www.w3.org/1999/xlink">a priori knowledge about parasitic resistances guaranteed exponentially under persistence excitation conditions signal. An application presented conjunction dynamic to sensorless algorithm require any sensor side controls only voltage. Processor-in-the-loop (PIL) studies conducted OPAL-RT OP 5700 used assess performances controller.