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Siva, S.
- Performance Evaluation of 3-Phase Five Level Flying Capacitor Multilevel Inverter
Authors
1 Arunai Engineering College, Tiruvannamalai, IN
Source
Programmable Device Circuits and Systems, Vol 4, No 12 (2012), Pagination: 649-657Abstract
Multilevel inverter have become more popular over the years in electric high power application with the promise of less disturbance and reduced harmonic distortion without a transformer. This paper proposes performance evaluation of three phase Flying Capacitor Multilevel Inverter (FCMLI), under various modulating techniques for various loads When the level of Inverter is increased the power quality issues such as Harmonics and the Electromagnetic Interference were decreased. Here the 3-Phase FCMLI is analysing under Sinusoidal Pulse Width Modulation. The Proposed 3-Phase FCMLI scheme is capable of producing two-level to five-level pulse width modulated voltage depending on the modulation range. Simulation tests have been conducted that PODPWM methods provide output with relative low distortion and COPWM provides relatively higher Vrms output voltage for induction motor-load.Keywords
Flying Capacitor Multi Level Inverter (FCMLI), Pulse Width Modulation (PWM), Total Harmonic Distortion (THD), VRMS, Crest Factor (CF), Form Factor (FF), Distortion Factor (DF).
- A Survey on High Utility Data Mining for Increasing Transactions Databases
Authors
Source
Data Mining and Knowledge Engineering, Vol 10, No 9 (2018), Pagination: 183-187Abstract
High utility itemset mining is significantly increased and became popular because of the real-time transactions. Current high utility itemset mining techniques are focused on different individual constraint which are its own performance. But in data mining, discovering new knowledge from the large database, it is important to follow the certain constraints (mixed) to accomplish the task effectively and profitably. All the existing literature we found that the algorithms are designed and developed in static databases based on single constraints. But in case of real-time applications, certain operations like insert or delete or updating are being done for every minute. So, this paper, study about different algorithms and challenges of algorithms on high utility data mining including incremental high utility mining and periodical also. This paper also studies and propose usage of multiple constraints on high utility data mining and measure about the accuracy of the algorithms using different constraints on data, model and measures.