Abstract
Abstract 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.
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