K. Thiyagarajah

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A PWM (pulse width modulation) rectifier/inverter system using IGBTs (insulated-gate bipolar transistors), capable of switching at 20 kHz, is reported. The base drive circuit for the IGBT, incorporating short circuit protection, is presented. The inverter uses an Undeland snubber together with a simple energy recovery circuit, which ensures reliable and(More)
OBJECTIVE Some mutations in LMNA, encoding A-type lamins, are responsible for Dunnigan-type-familial partial lipodystrophy (FPLD2), with altered fat distribution and metabolism. The high prevalence of early and severe cardiovascular outcomes in these patients suggests that, in addition to metabolic risk factors, FPLD2-associated LMNA mutations could have a(More)
In this paper, a hybrid technique is proposed for controlling the Z-source inverter fed induction motor drive system. The hybrid technique is the combination of the gravitational search algorithm (GSA) and the support vector machine (SVM), which is utilized to improve the performance of the induction motor (IM). The novelty of the study is to control the(More)
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