臺灣博碩士論文加值系統

本論文主要在研究無量測器(sensorless)之定子磁通導向 (stator flux
orientation,SFO)感應機向量控制系統之設計與實現,並評估定子磁通估
測器對感應電動機參數變化的靈敏度.在實作部份,本論文採用80196MC單
晶片微處理器來發展控制軟體,其中定子磁通估測器部份僅用到電流感測
器來回授定子電流而無電壓感測器,這是以電壓命令取代回授電壓來估測
定子磁通,故硬體元件可減少並降低系統成本.文中首先介紹向量控制的架
構及三種定子磁通估測器模式並評估其對參數變化的影響,接著介紹在不
同的場導系統控制架構下之轉子轉速估測技術,最後以SIMULINK對無量測
器之定子磁通導向向量控制系統進行電腦模擬,並與實作結果做一比較,結
果顯示本系統在額定轉速無載及加載運轉下均有不錯的響應結果.

This thesis investigates the design and implementation of a
speed sensorless stator-flux-oriented vector-controlled
induction motor drive system. This thesis also evaluates the
sensitivity of stator flux observers as the induction motor
parameters vary. In the hardware implementation the single-chip
micro- processor, the INTEL 80196MC, is used for control
software development. Only current sensor are used for stator
current feedback. No voltage sensor is used for voltage
sensing. Instead, the stator voltage commands are used for
estimating the stator flux, thus reducing the size and the cost
of the system. In this thesis the vector control schemes and
three types of stator flux observers are first introduced and
the influence of parameters variation on these observers is
evaluated. This is followed by the introduction of some schemes
for estimating the rotor speed in different flux-oriented
control systems. Lastly, a comparision of the speed sensorless
stator-flux- oriented systems is evaluated by using both
computer simulation (SIMULINK) and experiments. The results
show good performance of the proposed system under no-load and
loading conditions at rated speed.