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SYSTEM AND METHOD FOR STABILITY CONTROL IN ADJUSTABLE SPEED DRIVE WITH DC LINK THIN FILM CAPACITOR
SYSTEM AND METHOD FOR STABILITY CONTROL IN ADJUSTABLE SPEED DRIVE WITH DC LINK THIN FILM CAPACITOR
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机译:具有直流母线薄膜电容器的可调速驱动器的稳定性控制系统和方法
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摘要
A control system for actively damping an output of an adjustable speed drive (ASD) having a DC link thin film capacitor is programmed to calculate a d-axis damping coefficient and a q-axis damping coefficient for stabilizing an output of the ASD based at least on a voltage across the DC link thin film capacitor at a steady operating point. The control system is further programmed to extract d-axis and q-axis perturbations in d-axis and q-axis output currents of the ASD using a high pass filter, damp the d-axis perturbation and the q-axis perturbation with the d-axis damping coefficient and the q-axis damping coefficient, respectively, and calculate a damping frequency based on the damped d-axis perturbation and the damped q-axis perturbation. The control system is also programmed to damp an angle of rotation of a reference motor speed command for controlling the ASD using the damping frequency.
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