Design of single phase variable frequency drive?
Spehro Pefhany email (remove spam text)
At 02:18 PM 12/6/02 -0500, you wrote:
>Does anyone know where I can find information on designing a single
>phase variable frequency drive? I will be using a PIC so this isn't
>entirely off topic. I would be driving a 1/3 hp permanent split
>capacitor motor. Thanks!
Unless your speed range is very limited, you'll actually be
designing a single-phase-input, two phase output drive and dumping the
capacitor. The passive network only has the appropriate phase
shift at a single frequency.
Spehro Pefhany --"it's the network..." "The Journey is the reward"
interlog.com Info for manufacturers: speffhttp://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
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