Open AccessA Novel Current Injection Circuit For Adjustable Speed Drives
Author(s) -
Arun Kannan,
Thenappan Chandrasekar,
B. Justus Rabi,
S. S. Darly
Publication year - 2019
Publication title -
international journal of recent technology and engineering
Language(s) - English
Resource type - Journals
ISSN - 2277-3878
DOI - 10.35940/ijrte.f2608.118419
Subject(s) - harmonics , total harmonic distortion , rectifier (neural networks) , voltage , duty cycle , harmonic , electrical engineering , inverter , current (fluid) , power (physics) , distortion (music) , diode , power factor , electronic engineering , control theory (sociology) , computer science , engineering , physics , acoustics , amplifier , stochastic neural network , control (management) , cmos , quantum mechanics , machine learning , artificial intelligence , recurrent neural network , artificial neural network
An adjustable speed drive creates the harmonics. The novel current injection circuit does not need any additional active devices. With the significant reduction in current harmonics, the AC input line current is sinusoidal. The ZVS technique is used for all the switches operation. The rectifier diodes are by soft switching. The output voltage regulated by fixed duty ratio with varying switching frequency. The advantages of proposed AC-DC-AC systems are low price, compact, high efficiency, and simplicity. Nine level diode clamped inverter produces the voltage harmonics of 8.75%. The Total Harmonic Distortion (THD) of input current is as low as 7.72 % and power factor as high as 0.99. Theoretical results are verified initially through PSIM simulation and validated with an experimental prototype of 2.5Kw.