基于滑模策略的微网逆变器负载侧电压-功率自协调控制系统设计

张伟琦; 王艳敏; 张涵清; 王家明

doi:10.19912/j.0254-0096.tynxb.2024-0355

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太阳能学报 ›› 2025, Vol. 46 ›› Issue (7) : 164-176. DOI: 10.19912/j.0254-0096.tynxb.2024-0355

第二十七届中国科协年会学术论文

基于滑模策略的微网逆变器负载侧电压-功率自协调控制系统设计

张伟琦, 王艳敏, 张涵清, 王家明

作者信息 +

DESIGN OF LOAD-SIDE VOLTAGE-POWER SELF-COORDINATED CONTROL SYSTEM FOR MICRO-GRID INVERTERS BASED ON SLIDING MODE STRATEGY

Zhang Weiqi, Wang Yanmin, Zhang Hanqing, Wang Jiaming

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文章历史 +

摘要

微网负载侧并/离网状态的变化影响着逆变器的输出状态配置。为进一步增强微网逆变器输出状态的自协调能力,简化多模式控制系统并用的复杂性,基于滑模策略（SMC）设计一种电压-功率自协调控制系统。首先,建立微网逆变器功率传输模型,基于其有功/无功约束下输出电压特性分析,引入虚拟补偿电压构建电压-功率自协调控制关系;接着,利用SMC策略实现控制系统各模块功能,并结合SMC控制律特性分析其稳定性;最后,设计不同工况下的仿真与实验,分析并验证了所提控制系统能够在逆变器最大输出功率限制下,依据负载侧运行状态自协调转换逆变器输出电压-功率状态,在满足负载侧用电需求的同时有效降低系统的响应时间与输出稳态误差。

Abstract

The uncertainty of load-side grid-connected/off-grid operation state of micro-grid seriously affects the output state configuration and hardware security of micro-grid inverters. In order to enhance the self-coordinated output capability of the inverter output state and simplify the complexity of multi-mode control systems, a voltage-power self-coordinated control system based on sliding mode control （SMC） is designed in this paper. Firstly, the power transmission model of the micro-grid inverter is established. Based on the analysis of output voltage characteristics under active/reactive power constraints, a virtual compensation voltage is introduced to construct the voltage-power self-coordination control relationship. Then, the SMC strategy is used to realize the function of each module within the control system, and the stability of SMC control law is analyzed. Finally, simulation under different working conditions are designed to analyze and verify that the proposed control system can self-coordinate the inverter output voltage-power state according to the operating state of the load side under the limitation of the maximum output power of the inverter, and effectively reduce the response time and output steady-state error of the system while meeting the power demand of the load side.

导出引用

张伟琦, 王艳敏, 张涵清, 王家明. 基于滑模策略的微网逆变器负载侧电压-功率自协调控制系统设计[J]. 太阳能学报. 2025, 46(7): 164-176 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0355

Zhang Weiqi, Wang Yanmin, Zhang Hanqing, Wang Jiaming. DESIGN OF LOAD-SIDE VOLTAGE-POWER SELF-COORDINATED CONTROL SYSTEM FOR MICRO-GRID INVERTERS BASED ON SLIDING MODE STRATEGY[J]. Acta Energiae Solaris Sinica. 2025, 46(7): 164-176 https://doi.org/10.19912/j.0254-0096.tynxb.2024-0355

中图分类号： TM464

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