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This paper presents a Space-Vector Modulated (SVM) Direct-Torque-Control (DTC) scheme for a direct-drive permanent magnet synchronous generator (PMSG) and a gird converter for wind energy without any position sensor. Direct control of the rotating velocity and amplitude of the stator flux vector allows very fast torque response of the PMSG according to the generator speed. Fixed switching frequency...
This research is developed the electric vehicle by the fuel cell. Between fuel cell source and motor controller, we add new power converter, offer steady output voltage to motor controller and drive the direct current hub motor. Converter not only offers steady output voltage but it also combines with coupling inductance technology to battery charger. Besides offers energy to drive motor, and fuel...
Bucket wheel excavators, spreaders, mobile crushers, movable belt conveyors and other machines on open pit mines are huge tracked vehicles with slow speed of movement. To be able to move on mine's terrain, the machines are equipped with crawler mechanism for support and transport. Crawler chain serves for transformation of rotation of drive tumbler to linear movement of tracked vehicle. This transmission...
Travel drive on open pit mine machines is multi-motor drive, consisting of two, four, six or more motors. This drive is the most demanding drive on the open pit mining machines. The single drives are cross-coupled through terrain, which is rugged and inhomogeneous, making the quasi-stiff mechanical coupling. This is the reason why the relation of coupling between the individual drives permanently...
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