具有弱磁控制之電動載具用永磁同步馬達驅動器研製

Design and Implementation of a Flux-Weakening IPMSM Drive for Electric Vehicle

辜重興(Chung-Shing Ku)

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(2010年)

https://doi.org/10.6841/NTUT.2010.00423

摘要

本論文主要研製用於電動載具之內置磁石永磁同步馬達驅動器，提出適當之控制策略以滿足電動載具低速高轉矩與高速定功率輸出之需求，並以微處理器建構具有向量控制之馬達驅動系統。當馬達操作在定轉矩區時，在滿足電流限制之前提下以MTPA之控制策略提供最大轉矩輸出；而當馬達操作在定功率區時，系統將依據目前電池電壓之限制對馬達進行弱磁控制，並加入輸出電壓之回授控制期望能輸出最大功率。上述之研究亦考量馬達磁飽和與磁耦合現象對參數變異所造成之影響，並進行適當之修正使所提之控制法則較具實用性。另外，亦推導馬達在發電下之數學模式並依此設計之馬達煞車能量回生控制策略，以有效提升馬達驅動系統之用電效率。最後以所研製驅動器搭配6.0 kW/1200 rpm之內置磁石永磁同步馬達，驗證所提控制策略之有效性。

關鍵字

內置磁石永磁同步馬達 ； 弱磁控制 ； 電動載具

並列摘要

This thesis presents novel control strategies of internal permanent magnet synchronous motor drive for an electric vehicle to meet the requirements of both high torque output at low speed and constant power output at high speed. A microprocessor-based IPMSM drive with vector controller in synchronous frame is built. First, for the motor operated in constant torque region under the limit of current, maximal torque per ampere is used. Secondly, a field-weakening control with line voltage feedback is adopted to yield in constant power region according to the present battery voltage. Furthermore, the effects of parameters variation caused by magnetic saturation and cross-coupling of IPMSM are considered and a modified controller is added to let proposed control methods more practical. Besides, the mathematical model of the IPMSM under generating motor is derived, and hence the energy regeneration efficiency is enhanced according to the controller design based on the precise model.
Finally, experimental results tested in 6.0kW/1200 rpm IPMSM show the effectiveness of the proposed control strategies on the self-made drive.

並列關鍵字

Internal permanent magnet synchronous motor ； Flux-weakening control ； Electric vehicle

參考文獻

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