Karthikkumar S, Sheela A
Department of Electrical and Electronics Engineering, Jai Shriram Engineering College, Tirupur, India.
Department of Electrical and Electronics Engineering, The Kavery Engineering College, Mecheri, Salem, India.
Sci Rep. 2025 May 23;15(1):17967. doi: 10.1038/s41598-025-02974-0.
This research introduces an adaptive hysteresis current controller (HCC) integrated with a multilevel inverter (MLI) and a battery storage system (BSS), which improves real power injection accuracy and enhances performance during load fluctuations. Maintaining voltage stability is essential for delivering high-quality power, especially as networks become increasingly complex, particularly in distributed systems with nonlinear loads, necessitating innovative control strategies. The proposed controller demonstrates superior performance compared to traditional methods, overcoming the limitations of conventional inverters. Simulation results indicate that the total harmonic distortion (THD) of the system achieves 2.43%, representing a 52% improvement over standard HCC, and enhances system efficiency by 6.8%. Additionally, the adaptive HCC reduces current injection errors by up to 85%, indicating significant efficacy, with phase angle deviations of less than 1° from the grid voltage. This reduction in reactive power demands contributes to maintaining grid stability under controlled and stressed conditions. These results comply with IEEE Std 519-2014 and IEC 61000-3-2 standards, ensuring reliability. This novel adaptive technique ensures stable grid connection and improved power quality, particularly in residential and commercial areas with prevalent nonlinear loads. The findings confirm the method's reliability and effectiveness for modern grids, even during dynamic and unstable conditions.
本研究介绍了一种与多电平逆变器（MLI）和电池储能系统（BSS）集成的自适应滞环电流控制器（HCC），该控制器提高了有功功率注入精度，并在负载波动期间增强了性能。维持电压稳定性对于提供高质量电力至关重要，尤其是随着电网日益复杂，特别是在具有非线性负载的分布式系统中，这需要创新的控制策略。与传统方法相比，所提出的控制器表现出卓越的性能，克服了传统逆变器的局限性。仿真结果表明，系统的总谐波失真（THD）达到2.43%，比标准HCC提高了52%，并将系统效率提高了6.8%。此外，自适应HCC将电流注入误差降低了高达85%，显示出显著的效果，与电网电压的相位角偏差小于1°。无功功率需求的这种降低有助于在受控和压力条件下维持电网稳定性。这些结果符合IEEE Std 519-2014和IEC 61000-3-2标准，确保了可靠性。这种新颖的自适应技术确保了稳定的电网连接并改善了电能质量，特别是在存在大量非线性负载的住宅和商业区。研究结果证实了该方法对现代电网的可靠性和有效性，即使在动态和不稳定条件下也是如此。
