An improved technique and its implementation for control of high power heaters in large autoclaves and similar plants

Kamalakannan, GM and Gupta, Amit Kumar (2009) An improved technique and its implementation for control of high power heaters in large autoclaves and similar plants. In: International Conference of Instrumentation, ICI-2009, 2009, Pune, India.

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Abstract

This paper presents an improved technique and its implementation for control of high power heaters in large autoclaves and similar plants. These plants are equipped with electrical heaters, which are grouped into number of banks to reduce the quantum of load/power change and improve operability, controllability and reliability. Conventionally, each heater bank is controlled through a power controller (usually Silicon Controlled Rectifier based). The total number of power controllers employed in a system will be equal to the total number of heater banks and they all share a common control signal provided by the temperature controller. While this is an obvious method, it is very expensive and results in decreased power factor and increased harmonic distortions. To overcome the above limitations, this paper explains a better technique; namely, ‘Heater Power Steering Logic (HPSL)’ and its implementation using Analog circuit and also using Programmable Logic Controller.

Item Type: Conference or Workshop Item (Paper)
Uncontrolled Keywords: Industrial Automation and Process Control;Autoclave;PLC; Heater power control
Subjects: CHEMISTRY AND MATERIALS > Composite Materials
Depositing User: Users 11 not found.
Date Deposited: 09 Aug 2011 10:36
Last Modified: 09 Aug 2011 10:36
URI: http://nal-ir.nal.res.in/id/eprint/9817

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