ABSTRACT:
This paper deals with the energy maximization and control
analysis for the permanent magnet synchronous generator (PMSG) based wind
energy generation system (WEGS). The system consists of a wind turbine, a
three-phase IGBT based rectifier on the generator side and a three-phase IGBT
based inverter on the grid side converter system. The pitch angle control by
perturbation and observation (P&O) algorithm for obtaining maximum power
point tracking (MPPT). MPPT is most effective under, cold weather, cloudy or
hazy days. A designed control technique is proposed for the MPPT mechanism of
the system. This paper will explore in detail about the control analysis for
both the generator and grid side converter system. Further, it will also
discuss about the pitch angle control for the wind turbine in order to obtain
maximum power for the complete wind energy generation system. The proposed WEGS
for maximization of power is modelled, designed and simulated using MATLAB
R2014b Simulink with its power system toolbox and discrete step solver
incorporated in the simulation tool.
KEYWORDS:
1.
Maximum power point tracking (MPPT)
2.
Permanent magnet synchronous generator (PMSG)
3.
Pitch angle control (PAC)
4.
Wind energy generation system (WEG)
SOFTWARE: MATLAB/SIMULINK
BLOCK DIAGRAM:
EXPECTED SIMULATION RESULTS:
Fig.2.
Wind speed (15 m/s).
Fig.3.
Pitch angle ( 26 Degree).
Fig.4.
Active power output (1.49 MW).
Fig.5.
Stator voltage of PMSG (per unit).
Fig.6.
Stator current of PMSG (per unit).
Fig.7.
Wind speed (m/s).
Fig.8.
Pitch control.
Fig.9.
Electrical torque of PMSG.
Fig.10.
Wind turbine power with pitch control.
CONCLUSION:
This
paper has briefly discussed about the energy maximization and control analysis
for the PMSG based wind energy generation system. The paper also explored in
detail about the different control algorithm for both the machine and grid side
converter system and has used VSC control for our proposed mechanism. A brief
discussion on the pitch angle control for the wind turbine has been described
which aims to obtain maximum power for the complete wind energy generation
system. A designed control technique named as (P&O) has also been proposed
for the MPPT mechanism of the system whose results has been validated using MATLAB
R2014b Simulink. As discussed before the presented technique includes maximum
power point tracking module, pitch angle control and average model for machine
side and grid side converters. Also, the integrated control system controls the
generator speed, DC-link voltage and active power along with the
above-mentioned factors.
REFERENCES:
[1]
M. Benadja and A. Chandra, “A new MPPT algorithm for PMSG based grid connected
wind energy system with power quality improvement features”, IEEE Fifth
Power India Conference, Murthal, pp. 1-6, 2012.
[2]
S. Sharma and B. Singh, “An autonomous wind energy conversion system with
permanent magnet synchronous generator”, International Conference on Energy,
Automation and Signal, Bhubaneswar, Odisha, pp. 1-6, 2011.
[3]
M. Singh and A. Chandra, “Power maximization and voltage sag/swell ride-through
capability of PMSG based variable speed wind energy conversion system”,34th
Annual Conference of IEEE Industrial Electronics, Orlando, FL, pp.
2206-2211, 2008.
[4]
T. Tafticht, K. Agbossou, A. Cheriti and M. L. Doumbia, “Output Power Maximization
of a Permanent Magnet Synchronous Generator Based Stand-alone Wind Turbine”,IEEE
International Symposium on Industrial Electronics, Montreal, pp. 2412-2416,
2006.
[5]
N. A. Orlando, M. Liserre, R. A. Mastromauro and A. D. Aquila, “A Survey of
Control Issues in PMSG-Based Small Wind-Turbine Systems”, IEEE Transactions
on Industrial Informatics, vol. 9, no. 3, pp. 1211-1221, Aug. 2013.
