ABSTRACT
Generalized machine theory (GMT) is developed on the hypothesis laid down by Park in 1926. This idea was then simplified by Kron and later further simplified by Gibbs using matrix algebra, to make the design and evaluation easily computable. The main consideration in this theory was to develop the equivalent circuit of rotating machines using the orthogonal direct and quadrature (d-q) axes as the basis vectors, as shown in Figure 3.1 for a salient two-pole synchronous machine. <italic>d-q</italic> axis of a salient two-pole synchronous machine. https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429436925/cba972fb-c4d1-4b84-8d3c-49e20faef80e/content/fig3_1_OB.tif"/> https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9780429436925/cba972fb-c4d1-4b84-8d3c-49e20faef80e/content/fig3_1_PB.tif"/>
