EXCITATION SYSTEM OF ASYNCHRONOUS SYNCHRONOUS MACHINE Russian patent published in 2021 - IPC H02P9/08 

FIELD: electrical engineering.

SUBSTANCE: invention relates to the field of electrical engineering and can be used to control the excitation of asynchronous synchronous machines that are used in the power industry to consume or generate active and reactive power. The excitation system of an asynchronous synchronous machine contains two autonomous single-phase bridge voltage inverters, a constant voltage source, a two-phase-five-phase transformer with a rotating magnetic field, and three five-phase cycloconverters. The first, second and third windings of the three-phase rotor are connected to the outputs of the first, second and third five-phase bridge cycloconverters, the inputs of which are combined and connected to the outputs of the secondary windings of a two-phase-five-phase transformer with a rotating magnetic field. The inputs of the first and second primary windings of the transformer are connected, respectively, to the outputs of the first and second single-phase bridge voltage inverters, the inputs of which are combined and connected to a constant voltage source. Both single-phase bridge voltage inverters are made with 180° control algorithm and pulse-width modulation. The output voltages of the inverters are 90° out of phase with respect to each other. The signals to the controlled keys of the cycloconverters are generated by the control system. Signals from current and voltage sensors at the output of a constant voltage source, signals from current and voltage sensors of the secondary winding of the transformer, a signal from a voltage sensor of the stator winding, a signal from a rotor position sensor, and a signal to control the rotor speed are connected to the inputs of the control system.

EFFECT: obtaining an excitation system of an asynchronous synchronous machine with improved weight and dimensions, expanded functionality and the ability to recuperate energy through the rotor circuit without using reversible rectifiers.

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