电梯轿厢无接触式电能传输装置的研制

研制的电梯轿厢无接触式电能传输装置采用磁耦合原理实现电能的无接触传输,可避免传统供电方式中轿厢的随行电缆疲劳破损的弊病。按楼层电站式的无接触取电方案,确保了无接触能源传输系统的绿色和环保,可避免高频导轨磁场裸露所引起的污染和隐患。静止式盘型可分离变压器的原、副边线圈串联了谐振电容以消除其漏感,使得在谐振频率点附近保持了较高的电压增益和功率传输能力。馈电部件和受电部件中均引入了闭环控制策略,使部件工作在最佳状态。在装置的传输功率超过300W、无接触距离10～15mm的情况下,其传输效率达到了84%。

Development of contactless electric power transmission device of elevator car

A contactless power transmission device of the elevator car is demonstrated based on magnetic coupling and noncontact electric power transmission, which can eliminate the shortcomings of fatigue damage of traditional car cables. The idea of contactless power transmission at the power station on each floor provides a green and environmentally friendly noncontact power transmission system and can avoid the interference and potential harm from high-frequency magnetic field produced by exposed guide tracks of the previous devices. Resonant capacitors are used in series with the primary and secondary coils respectively at the static plate-shaped and detachable transformer in order to compensate the residual inductance,which enhances the capability of higher voltage gain and power transmission efficiency near the resonant frequency. Closed-loop control technique is utilized both in feeding and electrical components to optimize the systematic performance. The transmission efficiency more than 84% is achieved when the source power is 300 W and the contactless distance is within 10--15 mm.