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Cascaded H-brige multilevel inverter based pulsed power supply for liquid food sterilization

Ahmad Azli, Naziha and Jambari, Hanifah and M. Piah, M. Afendi (2010) Cascaded H-brige multilevel inverter based pulsed power supply for liquid food sterilization. In: The 4th International Power Engineering and Optimization Conference (PEOCO 2010), 26-24 June 2010, Shah Alam, Selangor.

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Official URL: http://dx.doi.org/10.1109/PEOCO.2010.5559161


This paper proposes a Cascaded H-bridge Multilevel Inverter (CHMI) based pulsed power supply for the sterilization of liquid foods using Pulsed Electric Field (PEF). The utilization of a CHMI allows the system to reach high voltage without the use of transformers while fulfilling the pulse requirements for effective liquid food sterilization. By using the CHMI topology, no extra clamping diodes or voltage balancing capacitor is needed. In this work, the proposed CHMI circuit operation is simulated using MATLAB/Simulink where unipolar and bipolar square wave pulses with pulse width range of 1 µs to 1 ms are generated. A peak output voltage of 6 kV and peak output power of 3.6 kW have been obtained with both values meeting the pulse specifications for liquid food sterilization applications.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:multilevel inverter , pulsed electric field , simulation , sterilization
Subjects:Q Science > QA Mathematics > QA75 Electronic computers. Computer science
Divisions:Electrical Engineering
ID Code:23861
Deposited By: Mrs Liza Porijo
Deposited On:15 Jun 2012 07:39
Last Modified:15 Jun 2012 07:39

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