本文旨在設計及研製兩支路電感耦合型六相換流器，並將此換流器應用於六相功率即時模擬器。此系統具有並聯多階位準的功能，適用於大電流及大功率的換流器應用場合。使用兩支路耦合電感來抑制循環電流並提高電路的電路頻率和動態響應。系統採用電壓及電流閉迴路控制，使輸出電壓接近實際命令值。同時，通過回授各支路電流與平均值的比較，實現各支路電流平衡控制，從而達到電流平衡的目的，提高整體電路的穩定性。並使用了兩組交錯式脈波寬度調變控制來降低輸出的諧波含量，以提升整體電力品質。採用德州儀器的TMS320F28075數位信號處理器作為控制核心。所有的控制功能都是通過軟體程式實現的，兩組DSP來進行控制以降低系統執行時間。
本文已建立兩支路電感耦合型六相換流器的模式及電壓及電流閉迴路控制及電流平衡控制策略，並以Matlab/Simulink應用軟體模擬，由模擬結果驗證系統控制策略之可行性。在六相系統實測方面，電壓波形的頻率為60Hz，總輸出功率為2kW時，輸出相電壓總諧波失真率約為1.20%；電壓波形的頻率為180Hz，總輸出功率為2kW時，輸出相電壓總諧波失真率約為2.52%。應用於六相馬達功率即時模擬器實測方面，在轉速1200 rpm，6N-m，輸出電流總諧波失真率約為10.97%，其電流平衡指標均低於2.5%，每支路電感電流達到均流效果。從實測結果可驗證本文所提出控制策略及系統的可行性。

The objective of this thesis is to design and develop a two-branch coupled inductor-based six-phase inverter for application in a six-phase real-time power simulator. The system features multi-level parallel operation, making it suitable for high-current and high-power converter applications.The two-branch coupled inductor is used to suppress circulating current and improve the circuit operating frequency and dynamic response of the system. The system uses voltage and current closed-loop control to ensure that the output voltage closely follows the desired value. In addition, by comparing the feedback currents of each branch to their average value, individual branch current balancing control is achieved, improving overall circuit stability. Two sets of interleaved pulse width modulation (PWM) control are used to reduce output harmonics and improve overall power quality.The control core of the system is based on the Texas Instruments TMS320F28075 digital signal processor (DSP), which includes an embedded PWM module. All control functions are implemented through software programming, eliminating the need for dedicated hardware circuitry. The use of DSPs for control enables improved system execution time and provides flexibility and scalability.
In this paper, models for the two-branch coupled inductor-based six-phase inverter, voltage and current control, and current balancing control strategy have been established and simulated using Matlab/Simulink software to validate the feasibility of the system control strategy. In practical tests of the six-phase system, at a voltage waveform frequency of 60 Hz and a total output power of 2 kW, the total harmonic distortion of the output phase voltage is about 1.20%. At a voltage waveform frequency of 180 Hz and a total output power of 2 kW, the total harmonic distortion of the output phase voltage is approximately 2.52%. In the application of the six-phase motor power real-time simulator, at a speed of 1200 rpm and a torque of 6 N-m, the total harmonic distortion of the output current is approximately 10.97%, with all current balancing indices below 2.5%. The individual branch inductor currents achieve a balanced effect. The experimental results confirm the feasibility of the proposed control strategy and system.

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