本研究致力於開發輔助諧振換向極換流器，以絕緣閘雙極性電晶體做為半導體功率開關，並在傳統三相換流器中，引入諧振電感和電容元件做為輔助電路。系統結合微控制器和三相解耦合直接數位控制方法，此架構的核心價值在於實現主要三相開關的軟切換，以降低開關切換損失並提高整體系統效率。
首先，詳細介紹輔助諧振換向極換流器的運作原理，並介紹其主要的切換策略與控制方式。在三相解耦合直接數位控制中，透過分切合整過程推導，實現三相解耦合納入電感變化量控制，再經由上下臂開關時序，判斷出輔助開關導通與截止的時機點，從而實現輔助開關切換。
依據研究成果表明，使用輔助諧振換向極換流器能有效降低開關的切換損失，成功抑制開關的溫升。相較於一般傳統硬切式換流器，輔助諧振換向極換流器具有提升功率與切換頻率的能力，在相同規格的情況下，無需使用高規格的半導體功率開關或散熱技術來應對積熱問題，同時還能降低整體換流器成本。特別是在高切換頻率的情況下，輔助諧振換向極換流器更能體現提高整體效率的效果。
綜合以上，本研究成果驗證輔助諧振換向極換流器對效率提升的功效，提供各種換流器一個能改善性能和降低能量損失的有效解決方案，對於電力轉換技術的發展，具有重要的意義，可促進再生能源與電動載具的開發。此研究在未來的發展範圍內，具有廣泛的應用價值，且尚有許多論點值得研究。
本研究主要貢獻為：針對輔助諧振換向極換流器的諧振元件進行設計與比較，歸納實務上所要注意的重點與困難點，並在韌體中提出較佳的控制策略，最後，實作一部10 kHz輔助諧振換向極換流器，並與推導出的理論進行了互相驗證。

This study focuses on the development of an auxiliary resonant commutated pole inverter, utilizing insulated gate bipolar transistors (IGBTs) as the semiconductor power switches and introducing resonant inductors and capacitors as auxiliary circuit components in traditional three-phase inverters. The system combines a microcontroller with a three-phase decoupled direct digital control method, aiming to achieve soft switching of the main three-phase switches, reduce switching losses, and improve overall system efficiency.
First, the operational principles of the auxiliary resonant commutated pole inverter are explained in detail, along with the main switching strategies and control methods. In the three-phase decoupled direct digital control method, the decoupling of the three phases is achieved through a division and summation process and considering inductance variation. The timing of the auxiliary switch turning on and off is determined by the timing of the upper and lower leg switches, completing the switching of the auxiliary switches.
The research results demonstrate that the use of the auxiliary resonant commutated pole inverter can effectively reduce switching losses, and successfully suppress switch temperature rise. Compared to traditional hard-switching inverters, it possesses the ability to improve power and switching frequency. In the same specifications, there is no need to use high-specification semiconductor power switches or heat dissipation techniques to address heat accumulation issues, thus, reducing the overall cost of the inverter. The performance of the auxiliary resonant commutated pole inverter in terms of efficiency is particularly evident at high switching frequencies, showing the enhancement of overall efficiency.
In summary, this study confirms the effectiveness of the auxiliary resonant commutated pole inverter in improving efficiency, providing an effective solution for enhancing performance and reducing energy losses in various inverters. It holds significant importance for the development of power conversion technology and can promote the development of renewable energy and electric vehicles. This research has wide-ranging applications and there are still many arguments worthy of further investigation.
The main contributions of this study include the design and comparison of the resonant components in the auxiliary resonant commutated pole inverter, summarizing key points and challenges in practical implementation, proposing optimal control strategies in firmware, and finally, implementing a 10 kHz auxiliary resonant commutated pole inverter that validates the derived theoretical results.

[1] M. H. Rashid, Power electronics handbook devices, circuits, and applications, 3rd ed. Burlington, MA: Butterworth-Heinemann, 2011.
[2] D. Đ. Vračar, "A short overview of active-clamped resonant DC link inverter," in 2020 International Symposium on Industrial Electronics and Applications (INDEL), 4-6 Nov. 2020, pp. 1-6, doi: 10.1109/INDEL50386.2020.9266172.
[3] V. V. Deshpande and S. R. Doradla, "A detailed study of losses in the reduced voltage resonant link inverter topology," IEEE Transactions on Power Electronics, vol. 13, no. 2, pp. 337-344, 1998, doi: 10.1109/63.662852.
[4] K. W. E. Cheng, "Frequency and pulse width modulation for zero-voltage-switching resonant pole inverter," in Proceedings of the IEEE 1999 International Conference on Power Electronics and Drive Systems. PEDS'99 (Cat. No.99TH8475), 27-29 July 1999, vol. 2, pp. 1073-1077 vol.2, doi: 10.1109/PEDS.1999.792857.
[5] Z. Man, Z. Yunping, Z. Ae and H. Jiangang, "Investigation of auxiliary diode resonant pole inverter," in 4th IEEE International Conference on Power Electronics and Drive Systems. IEEE PEDS 2001 - Indonesia. Proceedings (Cat. No.01TH8594), 25-25 Oct. 2001 2001, vol. 2, pp. 643-646 vol.2, doi: 10.1109/PEDS.2001.975394.
[6] T. D. Batzel and K. Adams, "Variable timing control for ARCP voltage source inverters operating at low DC voltage," in 2012 IEEE Transportation Electrification Conference and Expo (ITEC), 18-20 June 2012, pp. 1-8, doi: 10.1109/ITEC.2012.6243478.
[7] J. He and X. Zhang, "Comparison of the back-stepping and PID control of the three-phase inverter with fully consideration of implementation cost and performance," Chinese Journal of Electrical Engineering, vol. 4, no. 2, pp. 82-89, 2018, doi: 10.23919/CJEE.2018.8409353.
[8] C. W. Tao, C. M. Wang and C. W. Chang, "A design of a DC–AC inverter using a modified ZVS-PWM auxiliary commutation pole and a DSP-based PID-like fuzzy control," IEEE Transactions on Industrial Electronics, vol. 63, no. 1, pp. 397-405, 2016, doi: 10.1109/TIE.2015.2477061.
[9] A. Cherifi, A. Chouder, A. Kessal, A. Hadjkaddour, A. Aillane and K. Louassaa, "Control of a voltage source inverter in a microgrid architecture using PI and PR controllers," in 2022 19th International Multi-Conference on Systems, Signals & Devices (SSD), 6-10 May 2022, pp. 1471-1477, doi: 10.1109/SSD54932.2022.9955891.
[10] A. Lunardi, E. Conde, J. Assis, L. Meegahapola, D. A. Fernandes and A. J. S. Filho, "Repetitive predictive control for current control of grid-connected inverter under distorted voltage conditions," IEEE Access, vol. 10, pp. 16931-16941, 2022, doi: 10.1109/ACCESS.2022.3147812.
[11] B. N. Singh, S. Bhim and B. P. Singh, "Fuzzy control of integrated current-controlled converter-inverter-fed cage induction motor drive," IEEE Transactions on Industry Applications, vol. 35, no. 2, pp. 405-412, 1999, doi: 10.1109/28.753636.
[12] E. C. Chang and J. M. Guerrero, "Fuzzy variable structure control for PWM inverters," in 2011 IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 2011), 27-30 June 2011, pp. 609-613, doi: 10.1109/FUZZY.2011.6007373.
[13] X. Wang, W. Xu, Y. Zhao and X. Li, "Modified MPC algorithm for NPC inverter fed disc coreless permanent magnet synchronous motor," IEEE Transactions on Applied Superconductivity, vol. 26, no. 7, pp. 1-5, 2016, doi: 10.1109/TASC.2016.2594809.
[14] T.-F. Wu, Y.-H. Huang, Y.-T. Liu and M. Misra, "Decoupled direct digital control with D-Σ process and average common-mode voltage model for 3Φ3W LCL converters," in 2019 IEEE Applied Power Electronics Conference and Exposition (APEC), 17-21 March 2019, pp. 601-606, doi: 10.1109/APEC.2019.8722144.
[15] 維基百科. "LC電路." https://zh.wikipedia.org/zh-tw/LC%E7%94%B5%E8%B7%AF
[16] 楊忠倫, "輔助諧振換相極轉換器之研究," A study of the auxiliary resonant commutated pole converter, 國立清華大學, 新竹市, 2020.
[17] G. Tabrizi, F. Schnabel and M. Jung, "Optimized design method and control of an auxiliary resonant commutated pole inverter for two level photovoltaic inverters," in PCIM Europe digital days 2021; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management, 3-7 May 2021, pp. 1-8.
[18] T. Saha, S. Mukherjee, V. P. Galigekere and O. C. Onar, "Design of auxiliary circuit elements for achieving zero voltage switching in a wireless power transfer system," in 2020 IEEE Energy Conversion Congress and Exposition (ECCE), 11-15 Oct. 2020, pp. 5537-5544, doi: 10.1109/ECCE44975.2020.9236138.
[19] S. Karyś, "Advanced control and design methods of the auxiliary resonant commutated pole inverter," Bulletin of the Polish Academy of Sciences Technical Sciences, vol. 63, no. 2, pp. 489-494, 2015, doi: 10.1515/bpasts-2015-0056.
[20] S. Karyś, "Selection of resonant circuit elements for the ARCP inverter," in 2009 10th International Conference on Electrical Power Quality and Utilisation, 15-17 Sept. 2009, pp. 1-6, doi: 10.1109/EPQU.2009.5318855.
[21] R. Teichmann, "Control parameter selection in auxiliary resonant commutated pole converters," in IECON'01. 27th Annual Conference of the IEEE Industrial Electronics Society (Cat. No.37243), 29 Nov.-2 Dec. 2001, vol. 2, pp. 862-869 vol.2, doi: 10.1109/IECON.2001.975870.
[22] M. Well, "35W Single Output Switching Power Supply," RS- 35 series datasheet, 2022.
[23] M. Well, "3W DIP Package DC-DC Regulated Converter," SCWN03 & DCWN03 series datasheet, 2022.
[24] M. Well, "5W DC-DC Regulated Single Output Converter," 5SCW05 series datasheet, 2018.
[25] M. Well, "5W DC-DC Regulated Dual Output Converter," DCW05 series datasheet, 2018.
[26] LEM, "Current Transducer," LA 55-P datasheet, 2018.
[27] M. Well, "2W SIP Package DC-DC Regulated Converter," SPAN02 & DPAN02 series datasheet, 2022.
[28] M. Well, "6W SIP Package DC-DC Regulated Converter ", SPBW06 & DPBW06 series datasheet, 2017.
[29] STMicroelectronics, "Negative voltage regulators," L79xxC datasheet, 2012.
[30] T. Instruments, "Octal Buffer/Driver With 3-State Outputs," SN74LVC244A datasheet, 2005.
[31] Infineon, "1EDI EiceDRIVER™ Compact Separate output variant for MOSFET," 1EDI60N12AF datasheet, 2015.
[32] T. Instruments, "Quad Differential Comparators," LM339 datasheet, 2012.
[33] Renesas, "RX71M Datasheet Group Rev.1.20," RX71M datasheet, 2022.
[34] Renesas, "RX71M Group User's Manual Hardware Rev.1.20," RENESAS 32-Bit MCU RX Family ⁄ RX700 Series, 2022.
[35] Renesas, "RX Family RXv2 Instruction Set Architecture User's Manual Software," RENESAS 32-Bit MCU RX Family, 2013.
[36] C. S. Corporation, "MAGNETIC POWDER CORES," 2020.
[37] C. S. Corporation, "TECHNICAL DATA," CH740060GT, 2019.
[38] M. Zocher, N. Grass and R. Kennel, "Auxiliary Resonant Commutated Pole Inverter (ARCPI) operation using online voltage measurements," in 2022 IEEE Applied Power Electronics Conference and Exposition (APEC), 20-24 March 2022, pp. 1592-1597, doi: 10.1109/APEC43599.2022.9773560.
[39] Infineon, "1200V high speed switching series third generation," IKW40N120H3 datasheet, 2014.
[40] E. Aeloiza, W. Chen, V. M. Leppänen and T. Viitanen, "Loss analysis and experimental evaluation of a Si-IGBT based ARCP inverter," in 2022 IEEE Energy Conversion
Congress and Exposition (ECCE), 9-13 Oct. 2022, pp. 1-8, doi: 10.1109/ECCE50734.2022.9947939.
[41] M. Ke, X. Dehong, Z. Tao and S. Igarashi, "The evaluation of control strategies for Auxiliary Resonant Commutated Pole inverter," in 2009 IEEE Energy Conversion
Congress and Exposition, 20-24 Sept. 2009, pp. 810-816, doi: 10.1109/ECCE.2009.5315974.
[42] PowerStream. "Wire gauge and current limits including skin depth and tensile strength." https://www.powerstream.com/Wire_Size.htm.
[43] 維基百科. "PSIM Software." https://en.wikipedia.org/wiki/PSIM_Software.