Fractional-order Sliding Mode Control Strategy for Quasi-Z Source Photovoltaic Grid-Connected Inverter

Meichen, Pan; Chen, Caixue; Zhang, Da

doi:10.1109/ei247390.2019.9061871

Cited by 4 publications

(3 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Eqs. (19)(20)(21): From Fig. 19, with increase in PV voltage, power increases during its operation on left side of the MPPT point and decreases when on right side.…”

Section: Solar Based Dc-ac Inverter With Fosmcmentioning

confidence: 99%

“…This work uses a PID sliding surface and provides good dynamic response in 0.15 ms. In [20] a FOSM current controller is proposed for a QZSI for PV grid connected inverter in which the inductor current is taken as a state variable and achieved higher robustness and stability for input side disturbances. In this work, a Solar based DC-AC inverter with FOSMC voltage controller is simulated with voltage cross the capacitor and the current through the capacitor as state variables to regulate the output voltage and to reduce chattering present in a classical SMC during standalone operation.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Robust fractional order sliding mode control for solar based DC-AC inverter

Saheb¹,

Gudey²

2020

Journal of Energy Systems

View full text Add to dashboard Cite

Fractional order sliding mode control (FOSMC) strategy for a solar based DC-AC inverter is presented in this work. First FOSMC is implemented to voltage source inverter with a fixed DC input voltage of 400V to drive a load of 2.3 kW at a power factor of 0.8 lag. Here load voltage and current through capacitor as state variables and a linear sliding surface is considered. FOSMC using Gao’s reaching law is derived for inverter circuit. FOSMC is implemented at load bus to control output voltage of inverter with linear and nonlinear loads to desired values. FOSMC controls the output voltage with good voltage regulation, less steady state error of 1.32 %, settling time of 0.15 ms, good dynamic response, and convergence to origin with less chattering compared to classical SMC. FOSMC based solar based VSI is presented. The maximum power from PV array is extracted using P&O MPPT algorithm. A boost converter is used to step up input voltage of 200 V to 400 V. P-V and I-V characteristics are obtained for a typical solar cell of 2.5 kW FOSMC requires less control efforts to obtain a pure sinusoidal output voltage waveform of 230 V (rms) with output voltage THD of 0.135% well within IEEE standards. PSCAD/EMTDC v4.6 is used for simulation work.

show abstract

“…Eqs. (19)(20)(21): From Fig. 19, with increase in PV voltage, power increases during its operation on left side of the MPPT point and decreases when on right side.…”

Section: Solar Based Dc-ac Inverter With Fosmcmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Robust fractional order sliding mode control for solar based DC-AC inverter

Saheb¹,

Gudey²

2020

Journal of Energy Systems

View full text Add to dashboard Cite

show abstract

“…In a similar vein, ref. [13] proposed a current controller with fractional‐order SMC for quasi‐Z‐source inverter by combining the theory of fractional‐order calculus. The adoption of this approach leads to improved system response and stability to a certain extent.…”

Section: Introductionmentioning

confidence: 99%

Quasi‐Z based adaptive sliding mode control for three‐phase photovoltaic grid‐connected system

Chen,

Meng,

Yan

et al. 2023

IET Power Electronics

View full text Add to dashboard Cite

Considering the non‐linear characteristics of both the input and output of photovoltaic (PV) modules and quasi‐Z‐source inverters, as well as the unpredictable natural factors such as large disturbances caused by changes in illumination and temperature, an average state model for the PV quasi‐Z‐source inverter is established. This paper uses the output current of photovoltaic module, DC‐link capacitor voltage and its integral as state variables, then an adaptive reaching law with second‐order sliding mode characteristics is designed by combining with power reaching law and variable speed reaching law. By using the sliding mode controller based on the adaptive reaching law to control the stability of the DC‐link voltage of the quasi‐Z‐source inverter and the small capacitor voltage ripple, the photovoltaic system can operate stably at the maximum power point when the temperature and illumination conditions change abruptly, and the grid‐connected effect is improved. Through SIMULINK and RT‐LAB real‐time simulation, the effectiveness of the proposed adaptive sliding mode control strategy is verified when the environment changes, which effectively improves the dynamic response speed and grid‐connected effect of the system, and ensures the global robustness of the grid‐connected system.

show abstract