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A negative input-resistance compensator is designed to stabilize a power electronic brushless dc motor drive with constant power-load characteristics. The strategy is to feed a portion of the changes in the dc-link voltage into the current control loop to modify the system input impedance in the midfrequency range and thereby to damp the input filter. The design process of the compensator and the selection of parameters are described. The impact of the compensator is examined on the motor-controller performance, and finally, the effectiveness of the controller is verified by simulation and experimental testing. [ABSTRACT FROM AUTHOR]

Presents a study that proposed a single-stage, three-phase alternating current-to-direct current converter topology for high-frequency power supply applications. Topology of the three-phase current injection; Principle of operation; System design and simulation; Experimental verification.