| 引用本文: | 周雪松,景亚楠,马幼捷,王鑫,陶珑,问虎龙.基于观测状态修正的微电网储能双向DC-DC变换器自抗扰稳压策略[J].电力自动化设备,2026,46(1):185-193 |
| ZHOU Xuesong,JING Yanan,MA Youjie,WANG Xin,TAO Long,WEN Hulong.Active disturbance rejection and voltage stabilization strategy of bidirectional DC-DC converter for microgrid energy storage based on observation state correction[J].Electric Power Automation Equipment,2026,46(1):185-193 |
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| 摘要: |
| 在直流微电网中，高比例光伏设备的出力波动需要储能单元进行补偿和调节，但在复杂工况下，储能端口双向DC-DC变换器的稳压性能往往不能得到有效保障。为此，以直流微电网中的储能双向DC-DC变换器为研究对象，提出一种考虑观测偏差高阶修正的自抗扰稳压策略。将传统自抗扰控制中被忽略的偏差项定义为扰动观测高阶分量，并将其补偿到观测器结构中得到精确的修正变量，实现自抗扰观测偏差的精准和快速收敛；从时域、频域维度分析该策略能够有效改善观测性、抗扰性、鲁棒性的原因，并利用李雅普诺夫理论证明所提控制策略的稳定性。仿真结果表明，所提策略控制下的储能双向DC-DC变换器在多种复杂场景中均表现出较好的抗扰性和鲁棒性。 |
| 关键词: 微电网 自抗扰控制 变换器 状态修正 抗扰性能 鲁棒性能 |
| DOI：10.16081/j.epae.202504009 |
| 分类号:TM615;TM46 |
| 基金项目:国家自然科学基金重点资助项目(U23B20142)；天津市研究生科研创新项目(2022BKYZ036) |
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| Active disturbance rejection and voltage stabilization strategy of bidirectional DC-DC converter for microgrid energy storage based on observation state correction |
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ZHOU Xuesong1, JING Yanan1, MA Youjie1, WANG Xin1, TAO Long1, WEN Hulong2
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1.Tianjin Key Laboratory of New Energy Power Conversion, Transmission and Intelligent Control, Tianjin University of Technology, Tianjin 300384, China;2.Tianjin Ruineng Electric Co.,Ltd.,Tianjin 300385, China
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| Abstract: |
| In DC microgrid, the output fluctuation of high proportion photovoltaic equipment requires compensation and regulation by energy storage unit. However, the voltage stabilization performance of bidirectional DC-DC converter at the energy storage port is often not effectively guaranteed under complex operating condition. Therefore, the bidirectional DC-DC converter of energy storage in DC microgrid is taken as the research object, and an active disturbance rejection and voltage stabilization strategy is proposed considering high-order correction of observation bias. The neglected bias term in the traditional active disturbance rejection control is defined as the high-order component of disturbance observation, and it is compensated into the observer structure to obtain accurate correction variable, achieving precise and fast convergence of active disturbance rejection observation bias. The reasons why the strategy can effectively improve the observability, disturbance rejection, and robustness are analyzed from time and frequency domains, and the stability of the proposed control strategy is demonstrated using Lyapunov theory. The simulative results show that the bidirectional DC-DC converter of energy storage controlled by the proposed strategy exhibits good disturbance rejection performance and robustness in multiple complex scenarios. |
| Key words: microgrid active disturbance rejection control electric converters status correction disturbance rejection performance robust performance |
