Post by woowilly on Mar 15, 2013 16:46:46 GMT -5
half wave rectification is one shortcomming of typical china scooter voltage regulators.
Full wave rectification makes use of the negative voltages that are shorted to ground via a diode in unmodified setups.
Not as bad as half wave rectification instead or full wave, but another shortcomming is once the threshhold voltage is reached on the positive sinewave, the scr shorts all generated power to ground until the next positive sinewave.
Running a bipolar transistor or mosfet in it's linear region for a series pass or shunt regulator would provide output that's even closer to pure dc after filtering.
There'de be more heat to deal with in the regulator, it can be done though with a bigger heatsink and a more expensive power semiconductor.
converting to full wave will almost double available power, and it's fairly easy and cheap to do. the gain from redesigning the regulator to get away from a scr setup for a single phase stator probably isn't worth it. It's easier and cheaper to just switch to a three phase stator with scr regulator for far more gain.
Full wave rectification makes use of the negative voltages that are shorted to ground via a diode in unmodified setups.
Not as bad as half wave rectification instead or full wave, but another shortcomming is once the threshhold voltage is reached on the positive sinewave, the scr shorts all generated power to ground until the next positive sinewave.
Running a bipolar transistor or mosfet in it's linear region for a series pass or shunt regulator would provide output that's even closer to pure dc after filtering.
There'de be more heat to deal with in the regulator, it can be done though with a bigger heatsink and a more expensive power semiconductor.
converting to full wave will almost double available power, and it's fairly easy and cheap to do. the gain from redesigning the regulator to get away from a scr setup for a single phase stator probably isn't worth it. It's easier and cheaper to just switch to a three phase stator with scr regulator for far more gain.
