The design of permanent magnet variable-frequency door-motor with one-driver dual control

Abstract

Aiming at the scarcity for matched high-end door-motor to domestic high-velocity elevator market, with the research on domestic and overseas elevator door-motor control technology and permanent magnet synchronization technology, a high-end door-motor system that matched with high-velocity elevator and even ultra-high-velocity elevator has been put forward. It introduced in detail about the door-motor control hardware design that used digital chips and intelligent power module as its main circuit, how to realize the door-motor operation curve with SVPWM (Space Vector Pulse Width Modulation), the orientation angle learning method of permanent magnet synchronization motor, how to work in parallel for dual-motor and how to switch the single motor as well as the overall mechanical design scheme. The actual door-motor operation curve has been surveyed through experiment and the operation curve has been analyzed. The research results indicate that the door-motor system can suffice the design requirements input and the design scheme is reasonable and reliable, which will not only significantly shorten the opening and closing time compared to the ordinary door-motor and distinctly improve the service efficiency of high-velocity elevator, but also make the operation curve of the door-motor more graceful, quieter, more stable and safer.