由於碳化矽功率元件具有切換速度快、耐高溫、導通電阻低等優點，近年來逐漸取代傳統矽功率元件，應用在馬達驅動器及各領域。然而其快速切換之特性會導致電壓突波增加以及非線性因素影響加劇等問題，因此本論文的目標，係以理論分析非線性因素的影響，並根據理論提出電路及控制參數之設計方式。
　　本文針對應用於永磁同步馬達驅動之變頻器，以理論計算死區時間(Dead-time)對於變頻器之輸出電壓電流幅值及諧波的影響，接著根據避免過調變與總諧波失真最低的原則，分析死區時間、切換頻率及其他參數的關聯性及限制。另一方面為抑制快速切換造成之突波，本文採用增加閘極驅動器電阻的方式，而此又與死區時間長度相關。綜上所述，本文考慮死區時間及電壓突波，提出電路及控制參數的綜合設計方式，並透過MATLAB/Simulink、SIMPLIS/SIMetrix及ANSYS Twin Builder等軟體模擬驗證理論。最後，本文製作一具碳化矽功率元件之馬達驅動器，以實測驗證模擬及理論之分析結果。

Due to the advantages of silicon carbide (SiC) power transistor such as fast switching speed, high-temperature resistance, and low conduction resistance, they have gradually replaced traditional silicon power devices in recent years across various fields such as motor drives. However, their rapid switching characteristics can lead to increased voltage spikes and exacerbated effects of nonlinear factors. Hence, the objective of this thesis is to analyze the impact of nonlinear factors through theoretical analysis and propose circuit and control parameter design methods based on this analysis.
This thesis focuses on inverters applied to permanent magnet synchronous motor (PMSM) drives. It utilizes theoretical calculations to assess the impact of dead time on the amplitude of the output voltage and current as well as harmonics in the inverter. Subsequently, based on the principles of avoiding over-modulation and minimizing total harmonic distortion (THD), the interrelation and constraints between dead-time, switching frequency, and other parameters are analyzed. Furthermore, to suppress voltage spikes caused by rapid switching, the method of increasing gate driver resistance is adopted, which is correlated with dead-time.
In summary, considering dead-time and voltage spikes, a comprehensive design method for circuits and control parameters is proposed. The theoretical findings are verified through simulations using software such as MATLAB/Simulink, SIMPLIS/SIMetrix, and ANSYS Twin Builder. Finally, a motor drive based on silicon carbide power transistor is implemented. Then the experiment results are used to validate the analytical results from simulations and theory.

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