The Application of Orthogonal Transformation in the Analysis of Synchronous Electrical Machinery

This paper has deduced the basic equation of orthogonal transformation-based dq0 coordinate sys- tem synchronous electrical machinery through the orthogonal transformation method,and proves that the electromagnetic power is“conservative”before and after the equation transformation and the inductance modulus matrix is of the interchanging nature.The mark value form of dq0 coordinate system based on the orthogonal transformation has been derived,and the benchmark value of every inductance modulus has also been derived in the paper.