电梯驱动与能量回馈一体化控制系统设计

摘要

针对目前国内电梯能耗较高、控制复杂等特点,设计了一种集电梯控制、驱动和能量回馈于一体的控制系统.该系统采用双PWM控制以及32位ARM CPU+ 32位DSP CPU+ FPGA的硬件结构,两CPU通过并行通信高速交换数据,电梯主控板和呼梯工作站以及轿顶工作站通过CAN总线串行交换信息.测试结果表明,能量回馈控制系统的输出电流功率因数近似于1,电梯系统对电网的干扰可降至最小,节能高达40％.%Aiming at the features of current domestic elevators, I. E. , high-energy consumption and complex to control, a control system integrating elevator control, drive and energy feedback is designed. In this system, dual PWM control and the hardware structure with 32bit ARM CPU +32 bit DSP CPU + FPGA are adopted. The high speed data exchange between two CPUs is through parallel communication; while the lift master board, calling landing workstation, and the workstation at the top of car are exchanging information through the CAN bus in serial. The test results show that the output current power factor of the energy feedback control system is approximate to 1, the disturbance of the elevator system on the power grid is minimized and the energy saving is up to 40%.