Abstract
During the past years, hybrid solar-wind power systems containing photovoltaic (PV) and wind generators are used to minimize the intermittency problem of renewable power generation units. The improved modeling and control schemes for a grid-tied hybrid PV–wind system is presented in the current research work. The maximum power point tracking namely “MPPT” algorithm together with controlling the pitch angle are used, respectively, for the PV system and wind power generation to attain the maximum power for any given external weather conditions. A radial basis function network sliding mode known as the RBFNSM method is used to control the pitch angle in the wind energy system, while the PV system uses a proportional–integral–derivative controller equipped with the fuzzy gain scheduling in order to enhance the transient state and mitigate the settling time to ensure the stability of the mentioned system. To test the suggested control scheme’s effectiveness, MATLAB simulations are carried out under various scenarios of the wind speed as well as solar irradiation. The obtained results show the efficiency of the adaptive MPPT method to harness the highest power under very challenging scenarios. The merits of the developed schemes are quickly and precisely tracking the maximum power output of the hybrid PV–wind system. Besides, the power flowing between the utility grid and the hybrid source with a fast transient response and improved stability performance is effectively controlled using the offered schemes.
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Abbreviations
- PV:
-
Photovoltaic
- WT:
-
Wind turbine
- MPPT:
-
Maximum power point tracking
- RBFNSM:
-
Radial basis function network-sliding mode
- PID:
-
Proportional–integral–derivative
- FGS:
-
Fuzzy gain scheduling
- VSC:
-
Voltage source converter
- HC:
-
Hill climbing
- P&O:
-
Perturb and observe
- INC:
-
Incremental conductance
- FLC:
-
Fuzzy logic controllers
- ANFIS:
-
Adaptive neuro fuzzy inference system
- PSO:
-
Particle swarm optimization
- GA:
-
Genetic algorithm
- TSA:
-
Tabu search algorithm
- BFA:
-
Bacterial foraging algorithm
- ANA:
-
Ant colony algorithm
- ABC:
-
Artificial bee colony
- Z–N:
-
Ziegler–Nichols
- PSF:
-
Power signal feedback
- TSR:
-
Tip speed ratio
- RBFN:
-
Radial basis function network
- HCS:
-
Hill climb searching
- SMV:
-
Sliding mode variable
- ANN:
-
Artificial neural network
- DFIG:
-
Doubly fed induction generator
- STC:
-
Standard test condition
- DC:
-
Direct current
- PQ:
-
Power quality
- PWM:
-
Pulse width modulation
- OD:
-
Ordinary differential
- FIS:
-
Fuzzy inference system
- PCC:
-
Point of common coupling
- DG:
-
Distributed generation
- PLL:
-
Phase-locked loop
- ud/uq :
-
Grid voltage
- i ref :
-
Current reference
- R s :
-
Series resistances
- R sh :
-
Shunt resistances
- I ph :
-
Photocurrent of the PV cell
- T :
-
Temperature
- n :
-
Ideality factor of p–n junction
- IPVO :
-
Reverse saturation current
- K :
-
Boltzmann constant
- q :
-
Electronic charge
- t 1 :
-
Startup time
- t 2 :
-
Closedown time
- P :
-
PV’s output power
- S :
-
Radiation
- D :
-
Duty cycle
- V out :
-
Output voltage
- V s :
-
Input voltage
- T i :
-
Integral time
- T d :
-
Derivative time
- G 0 :
-
Nominal value of the control
- E (k):
-
Input of fuzzy rules
- CE (k):
-
Output of fuzzy rules
- ρ :
-
Air density
- A :
-
Area swept by blades
- \( \upsilon \) :
-
Wind velocity
- Pa :
-
Aerodynamic power
- CP :
-
Power coefficient
- β′:
-
Pitch angle of the blade
- λ :
-
Speed ratio of tip
- ω r :
-
Turbine speed
- P ref :
-
Wind output power
- P out :
-
Real output power of wind
- e :
-
Tracking error
- \( s_{1}^{1} (k) \) :
-
Switching surface
- c j :
-
Central vector of jth
- b j :
-
Base width constant of jth
- \( y_{0}^{3} (k) \) :
-
Output of the RBFNSM
- ω :
-
Rotation frequency
- θ :
-
Rotation angle
- id/iq :
-
Inverter current
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Acknowledgement
This work is supported by the Natural Science Foundation of Guangdong Province under Grant 2018A0303130115 and the National Science and Technology Major Project(2017ZX05018- 003) of China.
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Appendix
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Wu, D., Nariman, G.S., Mohammed, S.Q. et al. Modeling and simulation of novel dynamic control strategy for PV–wind hybrid power system using FGS−PID and RBFNSM methods. Soft Comput 24, 8403–8425 (2020). https://doi.org/10.1007/s00500-019-04408-2
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DOI: https://doi.org/10.1007/s00500-019-04408-2