具有弦波電流注入與雙向功率流動控制之電梯用三相交流-直流轉換器研製

Implementation of a Sinusoidal Current Injected Three-phase AC-DC Converter with Bi-direction Power Flow Control for an Elevator Traction System.

黃文隆(Wen-Lung Huang)

指導教授 ： 黃明熙

國立臺北科技大學/電資學院/電機工程系所/碩士(2009年)

摘要

本論文主要是研製用於電梯之具有雙方向功率流動之三相交流-直流轉換器，除可提供電梯於減速時將動能轉換為電能送回供電端外，尚可確保用電之功率因素接近1以符合國際標準與法規之需求。本文所提之控制策略是以電流及電壓雙廻路達到使三相電流波形為正弦，功率因素近似1，直流鏈電壓為可控之穩定直流之目標。用同步框向量控制建構電流與電壓廻路，以提供控良好之電流命令追蹤特性及負載擾動之直流電壓控制特性，另外提出並聯式三相交流-直流轉換器之控制策略作為能量回生用，可有效降低裝置容量以因應不同之應用需求。
系統是以Renesas SH-7137作為控制核心來實現數位功率控制。為提高軟體之執行效率，所有控制策略將以組合語言撰寫。最後將研製之轉換器於電梯塔進行測試，以驗證所提控制策略之有效性。

關鍵字

數位功率控制 ； 能量回生 ； 三相功率因數修正

並列摘要

The main purpose of this thesis focuses on implementation of a three-phase AC-DC converter with bi-directional power flow control for elevator’s traction system. The converter not only provides the power regeneration to grid when elevator breaking, but also ensures the power factor is near 1 to meet the international standards and regulations. The control strategy of this thesis is based on cascade control of current and voltage loop to force three-phase currents as sinusoidal, power factor near 1, and stable DC-link voltage. Good current command tracking and better load regulation of DC-link voltage are yielded using synchronous frame vector control. Moreover, a paralleled three-phase AC-DC converter for energy regeneration is developed to reduce power capacity of the converter and fulfill the requirements for different applications.
All the control schemes are full-digitally implemented using a RISC-based MCU - Renesas SH 7137. To achieve the purpose for increasing the software execution efficiency, the proposed control strategies are all coded by assembly language. Finally, the converter was fully tested on elevator tower to show the effectiveness of proposed control scheme.

並列關鍵字

Digital power control ； Energy regeneration ； Three-phase power factor control

參考文獻

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