THREE-PHASE ASYNCHRONOUS WELDING GENERATOR WITH ELECTRIC COUPLING OF STATOR WINDINGS

摘要

FIELD: electricity.SUBSTANCE: in slots of three-phase asynchronous welding generator with cage rotor (1) there is laid operating winding (2) and excitation winding (3). To start of operating winding (2) end of excitation winding (3) and rectifier (6) with electrode (7) are connected. To start of excitation winding (3) excitation capacitors (4) are connected. To the end of operating winding (2) compounding capacitors (5) are connected to a triangle connection. Possibility of overvoltage occurrence is stipulated by electric coupling between stator windings. When emergency overvoltage occur overvoltage protection device (8) is actuated; this device is connected to output of rectifier (6), it impacts on commutation device (9) which trips excitation capacitors (4) from excitation winding (3).EFFECT: increasing welding current and reducing idling losses.2 dwg