Power in Flux

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Type: Posts; User: lugnut

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    Just a thought. If you can control this motor...

    Just a thought. If you can control this motor and use 350V, you may want to keep the pulleys to use as the primary reduction on the bike, assuming you could get a shorter belt.
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    Strange qualifier to the question. You're always...

    Strange qualifier to the question. You're always running at slip below synchronous if you're doing any work with the motor so that doesn't enter into gearing choice. As far as gearing this motor,...
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    Field weakening does not affect the frequency/RPM...

    Field weakening does not affect the frequency/RPM relationship. The maximum with the 300 Hz limit will be 4500 RPM.
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    Is that 4096 ppr? It might be too high for the...

    Is that 4096 ppr? It might be too high for the Curtis. Too high of a ppr and high RPM can get into frequency response problems with some controllers. Yep, just checked the Curtis manual:
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    I've heard of a device which will excite the...

    I've heard of a device which will excite the resolver and transform the signal into a encoder type pulse train for use in such cases. I have it bookmarked somewhere ;-)

    Being an induction motor,...
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    You mean base frequency (or base speed). If an...

    You mean base frequency (or base speed). If an induction motor runs faster than synchronous speed, it is a generator. But you are correct. When you use a VFD and drive a standard industrial motor...
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    The maximum speed is set by the controller; the...

    The maximum speed is set by the controller; the max frequency minus a few percent slip. The winding in the motor determines a volts per hertz ratio. The battery voltage determines the frequency at...
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    Thanks, very interesting. The narrator doesn't...

    Thanks, very interesting. The narrator doesn't know much about induction motors. There are 72 teeth in the stator and 56 bars in the rotor. The number of poles is determined by the stator winding....
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