Three-phase motor powered by a multiphase direct converter arrangement

Abstract

Abstract 1. Three-phase motor (M) supplied by a multiphase direct converter arrangement for producing a rotary movement of its rotatable part (rotor) with respect to its fixed part (stator), the rotary field winding of which consists of two electrically separate coil systems (Wa1 , Wa2 , Wa3 ; Wb1 , Wb2 , Wb3 ), the coil pairs of which, forming the poles of the motor, are arranged in a geometrically coincident or mirror-symmetrical manner, characterised in that the converter arrangement is formed of three-phase current-full wave-converters (UR1, UR2, UR3), the connection (U1, V1, W1; U2, V2, W2; U3, V3, W3) of which on the input side are connected in paralled to a supply network (R, S, T) or to the secondary winding of a transformer (Tr) and the two three-phase current-coil systems (Wa1 , Wa2 , Wa3 ; Wb1 , Wb2 , Wb3 ) with their pole-forming coil paris are dimesioned such that each coil system takes on half the electrical energy and the one connections (Y1, Y2, Y3) on the output side of the converter arrangement are electrically connected with the connections (1a, 2a, 3a) of the one coil system (Wa1 , Wa2 , Wa3 ) and the other connections (Z1, Z2, Z3) of the converter arrangement are electrically connected with (Wb1 , Wb2 , Wb3 ).

Inventors

• 👤 Rolf Hollman

Bibliographic Details