公开(公告)号：US09889867B2

公开(公告)日：2018-02-13

申请号：US14980861

申请日：2015-12-28

Applicant: ALSTOM TRANSPORT TECHNOLOGIES

Inventor： Bruce V. Johnson

IPC: B61L5/06

CPC classification number: B61L5/06

Abstract: A railroad switch machine includes a pair of switch blades, an electric motor mechanically coupled to the pair of switch blades, a pair of input terminals connected to a DC power supply for receiving a power signal and a regulator to adapt the power signal between the input terminals into a motor current applied to the electric motor. The regulator includes a plurality of switches connected between the pair of input terminals and two phases of the electric motor. The switches are transistors and the regulator also includes a controller adapted to drive each transistor with a respective command signal to adjust a value and a direction of an intensity of the motor current.

公开(公告)号：US20170183021A1

公开(公告)日：2017-06-29

申请号：US14980861

申请日：2015-12-28

Applicant: ALSTOM TRANSPORT TECHNOLOGIES

Inventor： Bruce V. Johnson

IPC: B61L5/06

CPC classification number: B61L5/06

Abstract: A railroad switch machine includes a pair of switch blades, an electric motor mechanically coupled to the pair of switch blades, a pair of input terminals connected to a DC power supply for receiving a power signal and a regulator to adapt the power signal between the input terminals into a motor current applied to the electric motor. The regulator includes a plurality of switches connected between the pair of input terminals and two phases of the electric motor. The switches are transistors and the regulator also includes a controller adapted to drive each transistor with a respective command signal to adjust a value and a direction of an intensity of the motor current.