Hi Chris,
Just lost a long description of the system I am working on (slowly).
In answer to your question, I have noticed some cogging at startup, but once speed is up everything seems fine, just one or two seconds.
Ron
--- In electricboats@
>
> Thats extremely interesting Ron. Do the DC motors work fine on the rectified quasi sine wave? has anyone tried rectified quasi sine to power an AC drive ? ( usually above 2KW these are fed from rectified three phase sine)
>
> Chris S
>
> --- In electricboats@
> >
> >
> >
> > Hi George,
> > The motors I made mention of, are in fact PM brush motors, they are rated 130V DC and 18.5 amps, 6750 rpm. Using a router speed control and a full wave bridge rectifier I can use batteries or grid power.
> >
> > The inverters give a one step increase 12vdc up to 120vac modified sine wave, 5,000watt cont. and a peak of 10,000watts for a few seconds.
> >
> > I have used a stepup transformer, 5000 watt, to deliver 240vac with about 21 amps to drive a Delta 2HP planer motor. (220vac 18amps 3450rpm).
> > I dabble and tinker quite a bit so I tend to mix and match things a lot, moving parts and pieces around I seem to never keep any one project in a complete and functioning group.
> > I do enjoy dreaming and scheming :))
>
No comments:
Post a Comment