| abstract |
The invention relates to a compound electric excitation permanent magnet synchronous power frequency water-cooled generator with constant voltage, comprising: a rotating shaft, on which a permanent magnet rotor and an electric excitation rotor are connected; , When the auxiliary rotor of the disc exciter rotates, alternating current is generated in the coil of the coiled disc exciter rotor. The generated alternating current is rectified by the rotating rectifier module to output direct current, and then the main excitation winding of the electric excitation rotor assembly is excited to generate electricity. Excitation magnetic field; the magnitude of the excitation current provided by the auxiliary rotor of the disc exciter to the electric excitation rotor assembly is determined by the voltage regulator with the terminal voltage of the generator as the feedback signal. When the terminal voltage drops, increase the excitation current, and when the terminal voltage When it increases, the excitation current is reduced; the present invention adds an electric excitation rotor assembly on the same rotating shaft to generate an electric excitation magnetic field to compensate for the demagnetization magnetic field that reduces the voltage of the permanent magnetic field with the increase of the load, so as to keep the generator voltage constant . |