采用電力電子變頻裝置實現(xiàn)電壓頻率協(xié)調控制，改變了同步電機歷來的恒速運行不能調速的面貌，使它和異步電機一樣成為調速電機大家庭的一員。本文針對同步電機中具有代表性的凸極機，在忽略了一部分對誤差影響較小而使算法復雜度大大增加的因素（如諧波磁勢等），對其內部電流、電壓、磁通、磁鏈及轉矩的相互關系進行了一系列定量分析，建立了簡化的基于abc三相變量上的數(shù)學模型，并將其進行派克變換，轉換成易于計算機控制的d/q坐標下的模型。再使用MATLAB中用于仿真模擬系統(tǒng)的SIMULINK對系統(tǒng)的各個部分進行封裝及連接，系統(tǒng)總體分為電源、abc/dq轉換器、電機內部模擬、控制反饋四個主要部分，并為其設計了專用的模塊，同時對其中的一系列參數(shù)進行了配置。系統(tǒng)啟動仿真后，在經(jīng)歷了一開始的振蕩后，各輸出相對于輸出時間的響應較穩(wěn)定。
關鍵詞：同步電機? d/q模型? MATLAB? SIMULINK? 仿真。
The utilization of transducer realizes the control of voltage’s frequency. It changes the situation that Synchronous Machine is always running with constant speed. Just like Asynchronous Machine, Synchronous machine can also be viewed as a member of the timing machine. This thesis intends to aim at the typical salient pole machine in Synchronous Machine. Some quantitative analysis are made on relations of salient pole machine among current, voltage, flux, flux linkage and torque, under the condition that some factors such as harmonic electric potential are ignored. These factors have less influence on error but greatly increase complexity of arithmetic. Thus, simplified mathematic model is established on the basis of a, b, c three phase variables. By the Park transformation, this model is transformed to d, q model which, is easy to be controlled by computer. Simulink is used to masking and linking all the parts of the system. The system can be divided into four main parts, namely power system, abc/dq transformation, simulation model of the machine and feedback control. Special blocks are designed for the four parts and a series of parameters in these parts are configured. The results of simulation show that each output has a satisfactory response when there is disturbance.
Key Words: Synchronous Machine? Simulation? d/q Model? MATLAB? SIMULINK
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