The invention relates to an electromagnetic transient
modeling and simulation method of a
permanent magnet synchronous generator, which can reflect various types of internal faults, and the method comprises the following steps: 1, according to different fault types, establishing mathematical models of the
permanent magnet synchronous generator in different fault states, and according to the different fault types, establishing a
mathematical model of the
permanent magnet synchronous generator in the different fault states, according to the different fault types, establishing a
mathematical model of the permanent
magnet synchronous generator in the different fault states, and according to the
mathematical model, establishing a mathematical model of the permanent
magnet synchronous generator in the different fault states, and according to the mathematical model, establishing a mathematical model of the permanent
magnet synchronous generator in the different fault states, and establishing a mathematical model of the permanent magnet synchronous generator in the different fault states; 2, focusing matrix elements required to be updated according to fault characteristics, and selecting current or
flux linkage as a
state variable; 3, performing
discretization equivalence on the mathematical equation of the permanent magnet synchronous generator by using a backward Euler
integral method, integrating two state variables, unifying the model to obtain an
equivalent circuit equation, and constructing an
equivalent circuit of the permanent magnet synchronous generator; 4, the
equivalent circuit of the permanent magnet synchronous generator is connected with an external
electrical network, and the
equivalent model carries out node
admittance matrix iteration solution on the whole circuit based on an EMTDC
solver; and updating other concerned electrical information such as the
stator current, the rotor current, the
electromagnetic torque, the rotating speed, the
rotor angle and the like until the
simulation is finished.