为了改善船舶电力电子变压器整流级的功率因数，提升船舶电力系统性能，确保其能够正常运行，提出一种船舶电力电子变压器整流级新型直接功率自动控制方法。构建船舶PET整流级等效电路及数学模型，在静止坐标系下，获取网侧电压、电流的正交虚拟分量，依据虚拟分量求取船舶PET整流级有功和无功分量。将直接功率控制思想与滑模变原理相结合，提出基于滑模变结构双闭环的新型直接功率控制方法，设计功率内环滑模控制器和电压外环滑模控制器，利用这2个控制器实现对船舶电力电子变压器整流级的自动控制。实验结果表明，该方法能够保证船舶电力系统保持稳定的运行状态，使船舶PET电压平稳输出。
In order to improve the power factor of the rectifier stage of ship power electronic transformers, enhance the performance of ship power systems, and ensure their normal operation, a new direct power automatic control method for ship power electronic transformer rectifier stage is proposed. Construct an equivalent circuit and mathematical model for ship PET rectifier stage, obtain the orthogonal virtual components of grid side voltage and current in a stationary coordinate system, and calculate the active and reactive components of ship PET rectifier stage based on the virtual components. A new direct power control method based on sliding mode variable structure dual closed loop is proposed by combining the idea of direct power control with the sliding mode variable principle. A power inner loop sliding mode controller and a voltage outer loop sliding mode controller are designed, and these two controllers are used to achieve automatic control of the rectifier stage of ship power electronic transformers. The experimental results show that this method can ensure the stable operation of the ship's power system and ensure the smooth output of the ship's PET voltage.
2024,46(10): 161-165 收稿日期：2024-01-08
DOI：10.3404/j.issn.1672-7649.2024.10.028
分类号：TM4
基金项目：辽宁省教育科学“十四五”规划课题资助项目（JG22EB031）
作者简介：刘洋(1975-),女,硕士,讲师,研究方向为控制科学与工程
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