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A novel three‐phase buck‐boost inverter controlled by an open‐loop assisted closed‐loop hybrid control method
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2021-01-06 , DOI: 10.1002/cta.2925 Faruk Yalcin 1
International Journal of Circuit Theory and Applications ( IF 1.8 ) Pub Date : 2021-01-06 , DOI: 10.1002/cta.2925 Faruk Yalcin 1
Affiliation
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A novel general purpose three‐phase buck‐boost inverter without need of additional filtering units is presented in this study. The proposed inverter topology is built with moderate numbers of elements in terms of the operation advantages and qualities. The buck‐boost converter‐based structure provides obtaining wide‐range output voltage amplitudes lower or higher than the input voltages. A novel hybrid control method that is open‐loop assisted closed‐loop control is proposed for the inverter operation to improve the response performance on various input and output operation conditions. The wye‐connected modular structure of the proposed inverter topology also enables unbalanced three‐phase operation and single‐phase operation for each phase with independent phase voltages and frequencies. An experimental laboratory setup is built for the proposed three‐phase inverter for 0–50 Hz, 0–100 Vp, and 1.5 kW operation values for real‐time application tests. Simulation tests are also applied for the inverter. The obtained results for both the simulation and the experimental tests show that the presented inverter with the proposed hybrid control method is capable of operating in balanced/unbalanced three‐phase and independent single‐phase modes while producing close to sine wave output voltages under 5% THD levels with wide range desired amplitudes and frequencies on different operating points.
中文翻译：
由开环辅助闭环混合控制方法控制的新型三相降压-升压逆变器
这项研究提出了一种新颖的通用三相降压-升压型逆变器，无需额外的滤波单元。就运行优势和质量而言，所建议的逆变器拓扑由中等数量的元件构成。基于降压-升压转换器的结构可提供低于或高于输入电压的宽范围输出电压幅度。针对逆变器的运行提出了一种新颖的混合控制方法，即开环辅助闭环控制，以改善在各种输入和输出运行条件下的响应性能。拟议的逆变器拓扑的星形连接模块化结构还使具有独立相电压和频率的每相能够实现不平衡的三相运行和单相运行。为建议的三相逆变器构建了一个实验实验室设置，用于0-50 Hz，0-100 Vp和1.5 kW的运行值，以进行实时应用测试。仿真测试也适用于逆变器。通过仿真和实验测试获得的结果表明，采用提出的混合控制方法的逆变器能够在平衡/不平衡三相和独立单相模式下运行，同时产生接近5％的正弦波输出电压在不同工作点上具有宽范围的所需幅度和频率的THD电平。
更新日期：2021-03-17
中文翻译：
由开环辅助闭环混合控制方法控制的新型三相降压-升压逆变器
这项研究提出了一种新颖的通用三相降压-升压型逆变器，无需额外的滤波单元。就运行优势和质量而言，所建议的逆变器拓扑由中等数量的元件构成。基于降压-升压转换器的结构可提供低于或高于输入电压的宽范围输出电压幅度。针对逆变器的运行提出了一种新颖的混合控制方法，即开环辅助闭环控制，以改善在各种输入和输出运行条件下的响应性能。拟议的逆变器拓扑的星形连接模块化结构还使具有独立相电压和频率的每相能够实现不平衡的三相运行和单相运行。为建议的三相逆变器构建了一个实验实验室设置，用于0-50 Hz，0-100 Vp和1.5 kW的运行值，以进行实时应用测试。仿真测试也适用于逆变器。通过仿真和实验测试获得的结果表明，采用提出的混合控制方法的逆变器能够在平衡/不平衡三相和独立单相模式下运行，同时产生接近5％的正弦波输出电压在不同工作点上具有宽范围的所需幅度和频率的THD电平。
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