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Sensorless Control of 3-phase PFC AC/DC Converter using Kalman Filter
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 Title & Authors
Sensorless Control of 3-phase PFC AC/DC Converter using Kalman Filter
Park, Jun-Sung; Kwon, Young-Ahn;
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This paper investigates a new sensorless control appling a virtual flux oriented vector control without the line voltage sensor for the power factor correction of 3 phase PWM converter. The DC output voltage is controlled by applying the kalman filter algorithm for the virtual flux estimation and the synchronous phase is obtained by using the estimated virtual flux equation based on kalman filter. This method is used to reduce the calculation time of the system and obtain a stable control that the input current including the harmonics and the noise is improved. The proposed system implement PFC algorithm in the variable region of DC output voltage. It can obtain the unity power factor, and can precisely control the DC output voltage in the load variation and in the variable voltage range. The performance of the proposed algorithm is verified through simulation and experiment.
Virtual flux estimation;Kalman filter;Power factor correction;Sensorless control;3 phase converter;
 Cited by
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