Dynamic parameters directly reflect the dynamic performance of electrical machines. In this paper, two methods
for calculating the d-axis super-transient reactance of a damped winding permanent magnet electrical
machine (DWPMEM) are proposed. One is the analytical method: the analytical model of d-axis super-transient
reactance is developed, and the d-axis super-transient reactance is calculated by taking the coupling of
permanent magnet (PM) and winding current magnetic field into account. The other is the parameter identification
method: the parameter identification model of DWPMEM is established, and the reactance is identified
based on the DC step voltage method. The calculation accuracy of the two methods is verified by the measured
data, and the variation rules of the d-axis super-transient reactance with damping winding structures are analyzed.
The work of this paper has a certain reference value for the design and dynamic operation evaluation of
DWPMEM.