電梯回生電力系統之模擬與實作

Simulation and Implementation of Power Regenerative System for Elevator Systems

陳再添(Tsai-Tien Chen)

指導教授 ： 李慶鴻

元智大學/電機通訊學院/電機工程學系/碩士(2009年)

摘要

摘 要
本論文主要探討電梯馬達系統於回生運轉(power regeneration)之電力分析、模擬與實現。電梯控制系統中，馬達驅動的運轉過程，分為例行運轉與回生運轉，在例行運轉時，馬達負載為重載，需作功即為電動機(motor)模式；在回生運轉時，馬達為輕負載，成為發電機(generator)模式，此時馬達會產生回生電力，放電至變頻器的直流匯流排上。現今之電梯系統中，對於此回生電力均經由制動單元(braking unit)與回生制動電阻(braking resistor)的作用，將此電能轉換成熱能消耗，造成能源的耗損浪費。因此本研究之目的為當馬達於回生運轉時之電力分析，直流匯流排之回生電能經由整流濾波後回饋市電，達到節能省電之目的。最後並實現回生電力變流器，將此回生電力經由整流濾波後，達到與市電等電壓、頻率，以期能與市電並聯回饋實功至市電。最後經由模擬與實測結果可看出，本文提出的方法確實能成功將電梯回生運轉時之電力回饋於市電，如此可降低用電成本與符合未來相關法規規定。
關鍵字：電梯、馬達、變頻器、回生電力、控制。

關鍵字

電梯 ； 馬達 ； 變頻器 ； 回生電力 ； 控制

並列摘要

Abstract
This thesis focuses on the simulation, analysis, and implementation of the energy power change situation for elevator systems. In the conventional elevator systems, when the cabin moves downwards, the entire potential energy of the cabin is wasted and converted into fluid heat by throttling. Therefore, the energy consumption is high. Recently, the power-regenerative elevators have been developed for reducing the energy consumption.
In this thesis, we discuss the energy power change situation of motor system, when elevator is in power regenerative mode. The regenerative power is fed into AC-grid by DC bus of inverter, rectification, and filter. This achieves the energy conservation and power saving. Finally, the simulation analysis and experimental results are presented to demonstrate the performance.

Keywords: Elevator, motor, inverter, power regenerative, control.

並列關鍵字

Elevator ； motor ； inverter ； power regenerative ； control

參考文獻

[3]D. Divan and W. E. Brumsickle, “Powering the next millennium with power electronics,” IEEE 1999 International Conference on Power Electronics and Drive System, pp. 7-10, 1999.

[4]J. K. Kang and S. K. Sul, “Vertical-vibration control of elevator using estimated car acceleration feedback compensation,” IEEE Transactions on Industrial Electronics, Vol. 47, No. 1, pp. 91-92, 2000.

[6] K. Inoue, K. Ogata, and T. Kato, “A study on an optimal torque for power regeneration of an induction motor,” IEEE Conference on Power Electronics Specialists, pp. 2108-2112, 2007.

[9] Y. Y. Tzou, “DSP-based fully digital control of a PWM dc-ac converter for ac voltage regulation,” 26th Annual IEEE Power Electronics Specialists Conference (IEEE PESC), Vol. 1, pp. 139-144, 1995.

[10] H. Deng, R, Oruganti, and D. Srinivasan, “PWM methods to handle time delay in digital control of a UPS inverter,” IEEE Power Electronics Letters, Vol. 3, No. 1, pp. 1-6, 2005.