  Impedance is one of the vital parameters that provides useful information for
many power electronics related applications. A lot of impedance measurement
methods in power electronics have been reported. However, a comprehensive
investigation among these methods in terms of their characteristics,
advantages, and limitations has not been found in the literature. In order to
bridge this gap, a survey of the impedance measurement methods is conducted in
this paper. These methods are introduced, discussed, and then classified into
different categories depending on the measurement modes, principles, and
instruments. Moreover, recommendations for the future research on the impedance
measurement are also presented.
