IMPROVEMENTS ON THE ELECTRIC DRIVE ELEVATOR PROTOTYPE. PART II OPERATING TESTS

The prototype of the electric elevator consists of grid power converter connected with three different loads through the adequate power converters [1]. The main objective of this paper is to develop the industrial solution of the regenerative elevator power system, a system containing DC machines, asynchronous three-phase and synchronous with permanent magnets motors. In this paper, only the improvements done on the three-phase power inverter connected to the induction motor will be described. The same improvements can be applied to the three-phase power inverter connected to the synchronous machine. The grid power converter assures the unity power factor operation. The resulted experimental results are shown.