ASYNCHRONOUS ENGINE WITH A PHASE ROTOR Russian patent published in 2021 - IPC H02P1/00 

FIELD: electrical engineering.

SUBSTANCE: invention relates to an asynchronous engine with a phase rotor, it relates to the field of electrical engineering and it is equipped with components placed on its rotor, the action of which makes it possible to implement its contactless start. The basic electrical circuit of the rotor contains the first (LA), second (LB) and third (LC) phase windings of the rotor connected according to the “star” scheme, as well as three pairs, the first (VS1) with the second (VS2), the third (VS3) with the fourth (VS4) and the fifth (VS5) with the sixth (VS6), of counter-parallel thyristors. All these thyristors are also located on the rotor of the asynchronous engine, as well as the first (RH1), second (RH2) and third (RH3) starting resistors connected according to the “star” scheme. The control electrode of each thyristor (VS1 … VS6) is connected to the common point of the corresponding capacitor (C1 … C6) and the resistor forming the RC circuit. The second electrode of each capacitor (C1 … C6) is connected to the cathode of its “own” thyristor (VS1 … VS6). The second electrode of the resistor forming the RC circuit (see table) is connected to the common point of the Zener diode (VD1 … VD6) and the ballast resistor (see table). The anode of the Zener diode (VD1 … VD6) is connected to the cathode of the thyristor (VS1 … VS6). The second electrode of the ballast resistor (see table) is connected to the common point of the corresponding phase winding (LA … LC) and the starting resistor (RH1 … RH3). Each starting resistor (RH1 … RH3) is made by winding a metal wire with a high resistivity around the rotor shaft of the asynchronous engine. Each turn of the wire is separated by electrical insulation from the adjacent turn, from the adjacent starting resistor, as well as from the rotor shaft.

EFFECT: technical result is an increase in fire and explosion safety, as well as simplification of the design and maintenance of the engine and electrical installation as a whole.

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