TY - JOUR
T1 - A Hybrid Nearest Level Combined with PWM Control Strategy
T2 - Analysis and Implementation on Cascaded H-Bridge Multilevel Inverter and its Fault Tolerant Topology
AU - Sarwar, Mohammad Irfan
AU - Sarwar, Adil
AU - Farooqui, Shoeb Azam
AU - Tariq, Mohd
AU - Fahad, Mohammad
AU - Beig, Abdul R.
AU - Alamri, Basem
N1 - Funding Information:
The authors would like to acknowledge the support provided by the Hardware-In-the-Loop (HIL) Lab and the Non-Conventional Energy (NCE) Lab, Department of Electrical Engineering, Aligarh Muslim University, India.
Funding Information:
This work was supported by the Taif University Researchers Supporting Project, Taif University, Taif, Saudi Arabia, under Grant TURSP-2020/278.
Publisher Copyright:
© 2013 IEEE.
PY - 2021
Y1 - 2021
N2 - This paper presents a hybrid control strategy which combines the nearest level control technique with PWM control technique on a cascaded H-Bridge Multilevel Inverters (MLI). MLIs have become very popular due to its several advantages in the application areas like industrial drives and grid-connected renewable energy generation systems. With the reduced number of switches, driver circuits, conduction losses, switching losses, voltage stresses, size, and cost of the system, MLI has outperformed its two-level counterpart in terms of power quality issues. Reduction in the Harmonics and consequently the Total Harmonic Distortion (THD) in the output voltage has added to the benefits of MLI. Topological advancements in MLI require a satisfactory output voltage control strategy. In this work, a hybrid control strategy for a smooth and wider range of control of output voltage is proposed. The hybridized scheme enhances the control range of the voltage considerably. Moreover, the THD is also reduced compared to the conventional sinusoidal PWM scheme. A thorough analysis of the scheme has also been presented in the paper. SIMULINK/ MATLAB environment is used for testing the simulation model of the proposed control scheme. This hybridized controlling technique is also simulated for thermal modelling on PLECS software and power loss analysis is performed. The mathematical and simulation analyses are validated on an experimental prototype using a TMS320F28335 DSP controller card. The hybrid scheme has also been tested for a fault tolerant model of the cascaded H-bridge inverter. The performance of the hybrid scheme under different fault condition has also been shown to work satisfactorily.
AB - This paper presents a hybrid control strategy which combines the nearest level control technique with PWM control technique on a cascaded H-Bridge Multilevel Inverters (MLI). MLIs have become very popular due to its several advantages in the application areas like industrial drives and grid-connected renewable energy generation systems. With the reduced number of switches, driver circuits, conduction losses, switching losses, voltage stresses, size, and cost of the system, MLI has outperformed its two-level counterpart in terms of power quality issues. Reduction in the Harmonics and consequently the Total Harmonic Distortion (THD) in the output voltage has added to the benefits of MLI. Topological advancements in MLI require a satisfactory output voltage control strategy. In this work, a hybrid control strategy for a smooth and wider range of control of output voltage is proposed. The hybridized scheme enhances the control range of the voltage considerably. Moreover, the THD is also reduced compared to the conventional sinusoidal PWM scheme. A thorough analysis of the scheme has also been presented in the paper. SIMULINK/ MATLAB environment is used for testing the simulation model of the proposed control scheme. This hybridized controlling technique is also simulated for thermal modelling on PLECS software and power loss analysis is performed. The mathematical and simulation analyses are validated on an experimental prototype using a TMS320F28335 DSP controller card. The hybrid scheme has also been tested for a fault tolerant model of the cascaded H-bridge inverter. The performance of the hybrid scheme under different fault condition has also been shown to work satisfactorily.
KW - cascaded H-bridge (CHB)
KW - fault tolerance
KW - Hybrid control strategy
KW - multilevel inverter (MLI)
KW - nearest level control (NLC)
KW - pulse width modulation (PWM)
KW - total harmonics distortion (THD)
UR - http://www.scopus.com/inward/record.url?scp=85100859758&partnerID=8YFLogxK
U2 - 10.1109/ACCESS.2021.3058136
DO - 10.1109/ACCESS.2021.3058136
M3 - Article
AN - SCOPUS:85100859758
SN - 2169-3536
VL - 9
SP - 44266
EP - 44282
JO - IEEE Access
JF - IEEE Access
M1 - 9350652
ER -
