Application of Three-Level Inverter in Vertical Elevator
Taking the hoist speed control system as the research object,a new hoist design scheme is proposed to improve its operation efficiency,reliability and speed control performance,and then realise the high efficiency production using the low switching frequency predictive control of three-level rectifier.In order to increase the operational reliability of the hoist,a simultaneous base double winding electro-excited synchronous motor directional control strategy is proposed,and a fault-tolerant scheme and winding switching device are designed to ensure timely switching in the event of failure of a single frequency converter,so that the hoist can be operated under half-speed full-load conditions,through the design of the speed regulation principle and parameters of the hoist design design.
control strategyinvertersynchronous motorfault-tolerant scheme
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