METHOD AND DEVICE FOR ESTIMATING IMPEDANCE OF CONVERTER OUTPUT ELEMENT

Abstract: devices and methods for estimating impedance of an output element are described. according to one embodiment, a device for estimating impedance of an output element comprises a data acquisition circuit to acquire measurement data for currents and voltages of the output element connected to a common output node of a first converter module and a second converter module; and an impedance calculation circuit to calculate impedance of the output element using a component corresponding to a switching frequency of the first converter module and a component corresponding to a beat frequency, which corresponds to a difference between the switching frequency of the first converter module and a switching frequency of the second converter module, from current measurement values and voltage measurement values of the output element.

Inventor(s): Suyong CHAE

CPC Classification: G01R27/2605 ({Measuring capacitance (capacitive sensors )})

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