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Although Westinghouse achieved its first practical induction motor in 1892 and developed a line of polyphase 60 hertz induction motors in 1893, these early Westinghouse motors were two-phase motors with wound rotors until B. G. Lamme developed a rotating bar winding rotor. [12]
The poles can be varied at a ratio of 1:2 and thus the speed can be varied at 2:1. [ 7 ] [ 8 ] [ 9 ] Normally, the electrical configuration of windings is varied from a delta connection (Δ) to a double star connection (YY) configuration in order to change the speed of the motor for constant torque applications, such as the hoists in cranes .
Six twin Westinghouse 409-C2 AC traction motors drove the locomotive on six axles using a quill drive. Two more unpowered axles were located on each truck, for an unusual 1-C-1+1-C-1 wheel arrangement. Power output was rated at 2,000 horsepower (1,500 kW); the maximum speed was 70 miles per hour (110 km/h).
Benjamin G. Lamme. Benjamin Garver Lamme (January 12, 1864 – July 8, 1924) was an American electrical engineer and chief engineer at Westinghouse, where he was responsible for the design of electrical power machines. Lamme created an efficient induction motor from Nikola Tesla 's patents and went on to design the giant Niagara Falls ...
The related AAR wheel arrangement classification is 2-C+C-2. This means one frame mounted upon a set of two axles unpowered (the "2") and three axles powered (the "C") hinged with the ball and socket to another frame of the same design (the +). The unpowered "2" axles are at either end of the locomotive. The GG1 was equipped with a Leslie A200 ...
Westinghouse would have selected a low frequency of 30 Hz to drive motor loads, but the turbines for the project had already been specified at 250 RPM. The machines could have been made to deliver 16 + 2 ⁄ 3 Hz power suitable for heavy commutator-type motors, but the Westinghouse company objected that this would be undesirable for lighting ...
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