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Development of ripple reduced solar photovoltaic regulators using boomerang sliding mode control strategy
International Journal of Circuit Theory and Applications ( IF 1.581 ) Pub Date : 2021-06-09 , DOI: 10.1002/cta.3071
Kamalesh MS, Senthilnathan Nattuthurai, Bharatiraja Chokkalingam, Sabarimuthu Muthusamy, Kumar Cherukupalli

DC–DC boost converters are extensively used in wide range of solar photovoltaic (PV) applications. A common problem in PV regulator is the presence of ripples in output voltage and output current, due to the oscillations in PV power, inaccurate switching, and inadmissible inductor peak currents. In general, conventional boost converters are widely used in PV regulator; however, conventional PWM-controlled boost converters are upgraded to sliding mode controller (SMC)-based PWM controllers, which has been elaborated in the literature. However, SMC-based boost converter experiences the following problems: (i) presence of ripples in the output current and (ii) dynamic instability during sudden change in load current. This paper addresses the aforementioned problems and proposes a boomerang trajectory-based SMC (BT-SMC) control strategy for ripple mitigation in conventional DC–DC boost converters specifically used in PV regulator. BT-SMC tracker tracks the reference wave shape and controls the duty cycle, with respect to the switching frequency to have a ripple mitigated output. This self-adapting system provides an adequate reduction in ripples and rapid convergence of error nearest to zero. A detailed analysis on switching frequency transition, load variation, trajectory control, and its stability existence is conducted, and the proposed system is implemented using dSPACE-MicroLabBox-DS1202.

中文翻译:

使用回旋镖滑模控制策略开发纹波减少的太阳能光伏调节器

DC-DC 升压转换器广泛用于各种太阳能光伏 (PV) 应用。PV 调节器的一个常见问题是输出电压和输出电流中存在纹波,原因是 PV 功率振荡、开关不准确和电感峰值电流不可接受。一般来说,传统的升压转换器广泛用于光伏稳压器;然而,传统的 PWM 控制升压转换器升级为基于滑模控制器 (SMC) 的 PWM 控制器,这在文献中已有详细说明。然而,基于 SMC 的升压转换器遇到以下问题:(i) 输出电流中存在纹波和 (ii) 负载电流突然变化期间的动态不稳定。本文解决了上述问题,并提出了一种基于回旋镖轨迹的 SMC (BT-SMC) 控制策略,用于缓解光伏稳压器中专门使用的传统 DC-DC 升压转换器中的纹波。BT-SMC 跟踪器跟踪参考波形并根据开关频率控制占空比,以降低纹波输出。这种自适应系统可充分减少波动并快速收敛到接近零的误差。对开关频率转换、负载变化、轨迹控制及其稳定性存在进行了详细分析,并使用 dSPACE-MicroLabBox-DS1202 实现了所提出的系统。相对于开关频率来降低​​纹波输出。这种自适应系统可充分减少波动并快速收敛到接近零的误差。对开关频率转换、负载变化、轨迹控制及其稳定性存在进行了详细分析,并使用 dSPACE-MicroLabBox-DS1202 实现了所提出的系统。相对于开关频率来降低​​纹波输出。这种自适应系统可充分减少波动并快速收敛到接近零的误差。对开关频率转换、负载变化、轨迹控制及其稳定性存在进行了详细分析,并使用 dSPACE-MicroLabBox-DS1202 实现了所提出的系统。
更新日期:2021-06-10
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