| 谭广军,孙孝峰.微电网系统中Tan-Sun坐标变换体系的应用研究[J].电源学报,2018,16(2):1-10 |
| 微电网系统中Tan-Sun坐标变换体系的应用研究 |
| Application of Tan-Sun Coordinate Transformation System in Microgrid System |
| 投稿时间：2017-12-11 修订日期：2018-02-26 |
| DOI：10.13234/j.issn.2095-2805.2018.2.1 |
| 中文关键词: 电压不平衡 微电网 三相PWM变换器 Tan-Sun坐标变换体系 模型解耦 |
| 英文关键词:voltage unbalance microgrid three-phase PWM converter Tan-Sun coordinate transformation system model decoupling |
| 基金项目:国家自然科学基金资助项目（51677162）；国家重点研发计划资助项目（2016YFB0900300）；河北省自然科学基金青年基金资助项目（E2018203174）；光宝电力电子技术科研基金资助项目（PRC20170956） |
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| 中文摘要: |
| Tan-Sun坐标变换体系能够将不含有零序分量的三相不平衡交流量变换为2个正交等幅的交流量，并可通过Park变换将其变换为2个不含有二次谐波分量的直流量。基于Tan-Sun坐标变换体系所具有的上述特点，将Tan-Sun坐标变换体系应用于电网电压不平衡条件下的微电网系统中，以实现对三相PWM变换器的三相不平衡电流的直流解耦，以及三相PWM变换器数学模型的精确解耦，可避免使用谐振控制方法和相序分量提取方法，从而提高其控制灵活性和电能质量，简化其控制系统结构。最后通过仿真和实验研究验证了Tan-Sun坐标变换体系在微电网系统中应用的可行性和有效性，以及相对于正负序同步旋转坐标变换方法的优越性。 |
| 英文摘要: |
| Tan-Sun coordinate transformation system can transform three-phase unbalanced AC quantities without zero-sequence components into two orthogonal AC quantities with equal amplitudes, which can be further transformed into two DC quantities without second harmonic components through Park transformation. Based on the above characteristics, Tan-Sun coordinate transformation system is applied to microgrid system under unbalanced voltage conditions so as to realize both the DC decoupling of three-phase unbalanced currents of a three-phase PWM converter and the strict decoupling of the same converter's mathematical model. In this way, both the resonant control method and the extraction method for phase-sequence components can be avoided, which improves the control flexibility and power quality and simplifies the control structure of the converter. Finally, simulation and experimental results verified the feasibility and effectiveness of the application of Tan-Sun coordinate transformation system in microgrid system, as well as its superiority to the positive-and negative-sequence synchronous rotating coordinate systems. |
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