Open AccessStudy on the design and switching dynamics of hysteresis current controlled four‐leg voltage source inverter for load compensation
Author(s) -
Ismail Nafih Muhammad,
Mishra Mahesh K
Publication year - 2018
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2017.0118
Subject(s) - control theory (sociology) , inverter , matlab , voltage , shunt (medical) , three phase , power inverter , pulse width modulation , electronic engineering , computer science , engineering , topology (electrical circuits) , electrical engineering , control (management) , medicine , cardiology , operating system , artificial intelligence
In a variable switching frequency control scheme, it is challenging to design the voltage source inverter (VSI) parameters without knowing the maximum and minimum switching frequencies. The switching frequency variation depends on the system parameters. Therefore, the expression for frequency variation in one inverter topology does not hold in other topologies. The design of hysteresis current controlled four‐leg shunt active power filter (APF) requires the switching dynamics analysis to ensure satisfactory performance of the inverter. In this study, a detailed analysis on the switching dynamics of hysteresis current controlled four‐leg VSI and design of various inverter components for compensating unbalanced and non‐linear loads are presented. The results obtained from these analyses can be used in any applications involving hysteresis current controlled four‐leg VSI. These results are supported by detailed simulation studies conducted on a three‐phase four‐leg shunt APF system using Matlab/Simulink. The theoretical studies and design of passive components are also verified by conducting experiments on a prototype of four‐leg shunt APF developed in the laboratory.