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IEEE International Future Energy Challenge
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  2. Year: 2018
  3. Month: November

Month: November 2018

‘Bare’ Cyclone Mid Drive Ebike Motor $220 – Available NOW

Posted on November 20, 2018

The eBike motor only (not a kit) is in stock  for $220 at Luna Cycles. https://lunacycle.com/cyclone-mid-drive-ebike-motor-with-freewheel-sprocket/

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What do we need to bring to Anaheim? Do all the components need to be mounted on a bike?

Posted on November 13, 2018

Anaheim event will be a power point presentation from each of the teams, updating their progress. No need for hardware show-and-tell. The e-drive should be a single mechanical package, containing control interface, sensor interface, battery …

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Back emf value.

Posted on November 13, 2018

The back emf data given in page 5 of technical reference released on November 8 seems to be wrong. It says 37V vb Line to neutral . It should be Line ot Line . With …

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Can the due date for the proposal submission be extended upto 30th of november ?

Posted on November 13, 2018

Friday Nov 30th will be the extended deadline for the proposals.

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How was the phase inductance measured, as the given value (0.21mH) is atypically small for a 3kW BLDC motor?

Posted on November 8, 2018

Updated information is on the technical reference document.

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Is the nominal battery voltage 48V? You stated on your website that the battery pack consists of three 12V lead-acid batteries connected in series. This would make a 36V battery, which differs from what you specified in the Request for Proposal.

Posted on November 8, 2018

Battery pack consists of four 12 V batteries connected in series. Error in the entry has been corrected.

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How does the electrical frequency of 30Hz correspond to the mechanical speed of 600rpm if the motor has 6 pole pairs (as it is cited in the recent update of the technical reference document)? The same question applies to 300Hz and 6000rpm.

Posted on November 8, 2018

Motor has 8 poles. Information updated in the technical reference document.

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Number of motor poles?

Posted on November 8, 2018

In the technical reference is states that the number of pole pairs is 6 which means 12 poles. It also states that when the motor is spinning at 6000 rpm or 100 Hz that the …

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Question regarding the throttle input signal

Posted on November 5, 2018

On page 3 of the Technical Reference Manual under “Signal Connector to control”, “Throttle Signal” can be Speed, Torque, Motor Current or Power Regulated. But on Page 4, Point 13 “Throttle Control details” it is …

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Design proposal submission process

Posted on November 5, 2018

Each of the registered teams will receive two separate e-mail messages links (about ~12 Nov 2018) to Box folders at their preferred e-mail address specified in the letter of intent/registration page. One of the e-mail …

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