無橋切換式整流器供電開關式磁阻馬達驅動系統之開發及增能控制

DEVELOPMENT OF A BRIDGELESS SMR-FED SRM DRIVE AND ITS DRIVING PERFORMANCE ENHANCEMENT CONTROL

黃心寧(Huang, Hsin Ning)

指導教授 ： 鐘太郎 ； 廖聰明

國立清華大學/電機資訊學院/電機工程學系/碩士(2015年)

摘要

本論文旨在研製一單相無橋切換式整流器供電之切換式磁阻馬達驅動系統，並從事其增能控制與效能實測評定。首先建構一具合宜電流與速度控制之三相切換式磁阻馬達驅動系統，所提之電流控制機構之迴授控制器，輔以一反電動勢前饋控制器。另外提出一基於線圈電流之動態換相移位控制器，以自動降低反電動勢之效應。於具有良好電流追控性能後，透過妥善之速度控制器設計，獲得良好之驅動系統速度控制性能。
於較高速及較重載下，以換相移位降低反電動勢效應之功效漸有限制，只能改採直流鏈升壓策略。為達此目的，本論文建構一單相無橋切換式整流器，並用以建立後接切換式磁阻馬達驅動系統之可升與調節良好之直流鏈電壓。相較於傳統切換式整流器電路，所採無橋式電路具較高之轉換效率。在控制器方面，比例-積分迴授控制器輔以強健控制器，提升電流及電壓之動態響應特性。
最後，本文實測觀察換相移位對切換式磁阻馬達驅動系統直流鏈電流漣波及馬達振動之影響，並據以提出一基於直流鏈電流之動態換相移位控制器，以自動達到直流鏈電流漣波之最小化。所提控制器策略之有效性將以一些實驗結果驗證之。

關鍵字

切換式磁阻馬達 ； 切換式整流器 ； 功因校正 ； 換相調整 ； 直流鏈電流漣波 ； 電流控制 ； 速度控制 ； 電壓控制

並列摘要

This thesis is mainly concerned with the development of a switched-reluctance motor (SRM) drive powered from utility grid via a single-phase bridgeless switch-mode rectifier (SMR) frond-end. And some performance enhancement control approaches are proposed and evaluated experimentally. First, a three-phase SRM drive with suited current and speed controls is designed and implemented. For the developed current control scheme, the current feedback controller (CFBC) is augmented with an observed back electromotive force (EMF) current feedforward controller (CFFC). Moreover, a dynamic commutation shift controller (DCSC) using sensed winding current is proposed to further counteract the back-EMF effects automatically. Having well-designed current control loop, good speed control performance is achieved by the designed control scheme.
Under higher speeds and/or heavier loads, the effectiveness of commutation advanced shift is limited, and DC-link voltage boosting becomes the sole means. To achieve this goal, a single-phase bridgeless boost SMR is then developed to establish the boostable and well-regulated DC-link voltage for the followed SRM drive. Compared to the traditional boost SMR, the bridgeless schematic leads to the increased efficiency. As to the proposed control scheme, the proportional-plus-integral (PI) feedback controllers are augmented with simple robust cancellation controllers to enhance the current and voltage control dynamic responses.
Finally, the effects of commutation on the DC-link current ripple and the stator vibration characteristics are explored experimentally. Then accordingly, a DCSC based on sensed DC-link current is devised for achieving the DC-link current ripple minimization automatically. The effectiveness of the developed control approach is verified by some measured results.

並列關鍵字

SRM ； SMR ； PFC ； commutation tuning ； DC-link current ripple ； current control ； speed control ； voltage contro

參考文獻

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