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electrical:converter [2019/01/03 16:22] frater_secessus [Converters] |
electrical:converter [2019/03/12 18:02] frater_secessus [DIY converters] |
====== Converters ====== | ====== Converters ====== |
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| [[https://amzn.to/2RuAVjw|{{ https://images-na.ssl-images-amazon.com/images/I/41UEjIRC+3L._AC_US218_.jpg}}]] |
A converter handles power and charging needs when connected to [[electrical:shore_power|shore power]]: | A converter (a.k.a. converter/charger) handles power and charging needs when connected to [[electrical:shore_power|shore power]]: |
- charge the [[electrical:12v:deep_cycle_battery|house battery]] | - charge the [[electrical:12v:deep_cycle_battery|house battery]] |
- provide 12v to power house loads | - provide 12v to power [[electrical:12v:loads|house loads]] |
- sometimes acts as a passthrough for 110v | - sometimes acts as a passthrough for 110v |
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OEM converters are notoriously cheap and dumb (lacking [[electrical:12v:charging|smart charging]] functions). Since they are stuck at one voltage the manufacturer picks a compromise setpoint. If this is set too high or too low //for your usage patterns// it can damage lead-acid batteries ([[electrical:batterycide|batterycide]]). | OEM converters are notoriously cheap and dumb (lacking [[electrical:12v:charging|smart charging]] functions). Since they are stuck at one voltage the manufacturer picks a compromise setpoint. If this is set too high or too low //for your usage patterns// it can damage lead-acid batteries ([[electrical:batterycide|batterycide]]). |
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This compromise setpoint should coincide with standard float voltages for your battery bank. Typically this would be 13.2v - 13.4v for converters that are always on the grid, and 13.8v for batteries that are cycled but get put back on grid charging regularly. | This compromise setpoint should coincide with standard float voltage (Vfloat) for your battery bank. Typically this would be 13.2v - 13.4v for converters that are always on the grid, and 13.8v for batteries that are cycled but get put back on grid charging regularly.((Solar charging at a single setpoint, as with a [[electrical:solar:charge_controller&#shunt|shunt controller]], is done at [[electrical:solar:shunt_tweaking|Vabs rather than Vfloat]].)) |
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===== DIY "converters" ===== | ===== DIY "converters" ===== |
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| ==== DIY dumb converters ==== |
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| Dumb converters output a single voltage (see above). |
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| FIXME |
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| ==== DIY smart converters ==== |
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It is possible to build a [[https://boondockplan.wordpress.com/2017/03/02/poor-mans-converter/|DIY converter from a power supply and MPPT charge controller]]. | It is possible to build a [[https://boondockplan.wordpress.com/2017/03/02/poor-mans-converter/|DIY converter from a power supply and MPPT charge controller]]. |