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Multilevel DC/AC inverters have various structures and many advantages. Unfortunately, most existing inverters are unable to produce good output AC waveforms since their total harmonic distortion is not very low, because each level switching angle is not carefully arranged. In order to gain good power quality, we have to carefully investigate the switching angle arrangement to obtain the lowest total...
Multilevel DC/AC Inverters have various structures. They have many advantages. Unfortunately, most existing inverters content too many components (independent/floating batteries/sources, diodes, Capacitors and switches). The author introduces the "Laddered Multilevel DC/AC Inverters" in this paper that is new approach of the development in this area. Their simple structure and clear operation...
Voltage Lift Technique has been successfully employed in design of DC/DC converters, e.g. three series Luo-Converters. However, the output voltage increases in arithmetic progression. Super Lift Technique is the most significant contribution in Power Electronics, e.g. four series Super-Lift Converters. Their output voltage increases in geometric progression. This paper introduces a novel approach...
Many studies already indicated that cooperative learning can promote learners' interest than learning process purely based on individual competition, so that learners could get more enthusiastic while they can get involved in learning activities. Nevertheless, cooperative learning usually groups students by means of random or normal distribution approach, it is not a thoughtful means for learners...
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