How should the VESC "feel" on a board?

General topics and discussions about the VESC and its development.
devin
Posts: 253
Joined: 08 May 2017, 01:55
Location: San Francisco, California, US

Re: How should the VESC "feel" on a board?

Postby devin » 11 May 2017, 14:38

When Accelerating Full Throttle, in the very short timescale while still close to ~0rpm, assuming 0.0830ohm winding resistance lead-to-lead & 50V DC,

"Bland Mode"
10 Battery Amps x 50V DC = 500W = (77.61A Motor Amps x 0.0830ohm Winding Resistance) x 77.61A Motor Amps [I^2R] = 77.61A Motor Amps x 6.44V Effective PWM Volts

"Normal Mode"
20 Battery Amps x 50V DC = 1000W = (109.76A Motor Amps x 0.0830ohm Winding Resistance) x 109.76A Motor Amps [I^2R] = 109.76A Motor Amps x 9.11V Effective PWM Volts

"Power Mode"
30 Battery Amps x 50V DC = 1500W = (134.43A Motor Amps x 0.0830ohm Winding Resistance) x 134.43A Motor Amps [I^2R] = 134.43A Motor Amps x 11.15V Effective PWM Volts

"Insane Mode" <-Exceeds Current Sensing Limits
40 Battery Amps x 50V DC = 2000W = (155.23A Motor Amps x 0.0830ohm Winding Resistance) x 155.23A Motor Amps [I^2R] = 155.23A Motor Amps x 12.88V Effective PWM Volts

"Ludicrous Mode" <-Exceeds Current Sensing Limits
50 Battery Amps x 50V DC = 2500W = (173.55A Motor Amps x 0.0830ohm Winding Resistance) x 173.55A Motor Amps [I^2R] = 173.55A Motor Amps x 14.40V Effective PWM Volts

Image

benjamin
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Re: How should the VESC "feel" on a board?

Postby benjamin » 11 May 2017, 19:54

I have locked this topic before more nonsense and misinformation is added. One of the points of this forum is to spread knowledge, and the nonsense and ignorance here by some users does the opposite.

Please pay attention to what people try to explain. If I see more nonsense and misinformation like this you will get banned.


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