1
Peter J Unsworth: Apparatus and method for braking an electric motor. Allen Bradley Company, Quarles & Brady, May 23, 1989: US04833386 (15 worldwide citation)

An electric motor is coupled to the power lines by thyristors. The motor is braked by triggering the thyristors at the proper times to produce a electro-magnetic field within the motor which opposes the residual magnetic field of the rotor. The proper time to trigger the thyristors is determined by ...


2
Unsworth Peter Joseph: Appareil darret de moteur electrique et methode connexe, Apparatus and method for braking an electric motor. Allen Bradley Company, SHAPIRO COHEN, January 21, 1992: CA1294669

ABSTRACT An electric motor is coupled to the power lines bythyristors. The motor is braked by triggering the thyris-tors at the proper times to produce a electro-magnetic fieldwithin the motor which opposes the residual magnetic fieldof the rotor. The proper time to trigger the thyristors isdetermin ...