1引言电梯是一种垂直运输工具,它在运行中不但具有动能,而且具有势能。它经常处在正反转,反复起制动过程中。为满足乘客的舒适感和平层精度,要求电动机在各种负载下都有良好的调速性能和准确停车性能,在稳定性、准确性、快速性等方面都要求较高。为满足这些要求,采用变频器控制电动机是最合适的,变频器不但可以提供良好的调速性 1 Introduction Elevator is a vertical transport, it is not only kinetic energy in operation, but also has potential energy. It is often in the positive and negative, repeatedly braking process. In order to meet the passenger comfort and leveling accuracy, the motor is required to have good speed regulation performance and accurate parking performance under various loads, and requires high stability, accuracy and rapidity. To meet these requirements, the use of inverter control motor is the most appropriate, the inverter can not only provide good speed regulation