Underground trolley vehicle with brushless D.C. Motor

Details Underground trolley vehicle with brushless D.C. Motor Underground trolley vehicle with brushless D.C. Motor

1992-10-15

1993-06-22

Ro, Bentsu

Electricity: motive power systems

Battery-fed motor systems

318254, 318 53, H02P 602, H02P 118

Patent

active

052218805

ABSTRACT:
An underground mining vehicle has a solid state electronic motor controller for controlling the operation of a brushless D.C. motor. A switching network is connected between a high voltage bus and portions of a stator winding for delivering current to portions of the stator winding. A first transducer produces a first group of feedback signals representative of the position and speed of the rotor. A second transducer produces a second group of feedback signals representative of the current delivered to the motor. A speed control is provided which produces an input signal representative of the desired speed of the vehicle. An electronic circuit, responsive to the input signal, the first group of feedback signals, and the second group of feedback signals, produces control signals. The control signals are input to the switching network to control the application of current to the portions of the stator winding. The control signals cause the vehicle to travel at the desired speed and cause the motor to produce constant torque.

REFERENCES:
patent: 3596154 (1971-07-01), Gurwicz et al.
patent: 3688169 (1972-08-01), Yamaya et al.
patent: 3760246 (1973-09-01), Gurwicz et al.
patent: 3815001 (1974-06-01), Jamieson
patent: 4061089 (1977-12-01), Sawyer
patent: 4369383 (1983-01-01), Langley
patent: 4920475 (1990-04-01), Rippel
patent: 5170352 (1992-12-01), McTamaney et al.
Feasibility of Remote Control and Development of Remote Control Devices and Sensors. 7. Feasibility Study of the Application of Solid State Motor Controller to Underground Mining Machines, Oct. 1972, pp. 1-72.
Powertec Torque Controller Option Board, Jul. 10, 1990, pp. 1-9.
Powertec Model 1000RG and 1000RGA Instruction Manual Jul. 20, 1990, pp. 1-44.
Powertec Brushless D.C. Motor Manual, Mar. 31, 1992, pp. 1-9.

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