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In this paper the phase back EMF Zero Difference Point (ZDP) detection based sensorless control has been applied with the estimated back EMF using unknown input observer. The performance of VSI fed BLDC has been studied with various load torque and input speed reference. The phase to phase back EMFs estimated by the unknown input observer is used in place of Phase back EMF differences to get Zero...
In this paper a multiconfiguration stator has been designed and implemented using LABVIEW based real-time hardware platform. Multiconfiguration stator has wide flexibility of operation as PMSM, BLDC, SRM or induction motor with any number of configured phases and poles per phases. Two Phase Bipolar operation using 4-leg 8 MOSFETs and Two Phase Split Unipolar operation using six MOSFET unipolar circuit...
In this paper a novel position sensorless scheme named Back EMF Zero Difference Point (ZDP) detection has been proposed for six-switch VSI converter fed permanent magnet BLDC motor. This technique is based on the comparison of back EMFs and detection of the points in the back EMF waveforms where they cross each other or in other words they are equal. Commutation point is achieved exactly at the same...
This work introduces new technique named Reference Voltage Compensation in conjunction with STATCOM based on Proportional Integral and Derivative control action which reduces much the transient peak and settling time of the voltage and reactive power output which were still present after application of the statcom. In this work the proposed PID based Reference Voltage compensation has been used to...
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