ASYNCHRONIZED ELECTROMECHANICAL FREQUENCY CHANGER Russian patent published in 1994 - IPC

FIELD: power engineering. SUBSTANCE: asynchronized electromechanical frequency changer has at least one asynchronized synchronous machine provided with automatic field regulator and thyristor-controlled frequency changer; power leads of frequency changer and phase leads of machine field winding are connected directly or through inductance coils to resistors made, for example, for regulating field as function of machine slip. One of two regulation channels of automatic field regulator is made for regulating voltage vector phase of machine stator in respect to reference-input vector. Resistors may be connected in star or in delta. EFFECT: improved design. 3 dwg