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Published byCharles Oliver Modified over 9 years ago
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TE Module Electric Control Sys. Fan Control System is largely dependent upon nominal voltage output of TE Purpose: Provide steady, constant electric current to fan to meet airflow needs
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Simplest Design – TE directly connected to fan No electronic components in this system TE Module Fan
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Power Conditioner PC System will be one of 3 designs: Smoothing – flatten output ripple from TE Step Down – Voltage regulation of TE output to match fan’s req’d V Step Up – circuit/switching that increases V supply for fan TE Module Power Conditioning Fan
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Power Conditioning with Battery Will require a switching (battery power-> circuit power) Charging circuit TE Module Power Conditioning Fan Battery
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“Complete” – Battery & Aux. Power Same circuitry as previous platform, plus: Step up & Regulation circuitry for 12V output The battery is not required, but including it constitutes the most complex design TE Module Power Conditioning Fan Battery 12V DC Output
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Considerations: Platform selection based on output of TE and electrical needs of fan Assumptions Will need a battery for instant fan start-up TE takes time to develop Δ T Based on most TE characteristics, a step up circuit is likely needed Smoothing TE ripple current->converter->V regulator Added complexity means increased cost Complex design may be suitable for vendors, the project needs will then change
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General Needs (for a Haitian family) 1. The fan must have a constant, steady current supplied to it. 50% 2. The current must be supplied for the entire duration of stove operation. 30% 3. The system starts the fan immediately (i.e. has a battery). 15% 4. The system has an auxiliary power supply. 5%
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