DLE-TEST18 : Harnessing the Delayed Lenz Effect with the Tests Bench DLE-TB v1
created on february 9, 2013 - JLN Labs - last update march 26, 2013
All informations and diagrams are published freely (freeware) and are intended for a private use and a non commercial use.
Toutes les informations et schémas sont publiés gratuitement ( freeware ) et sont destinés à un usage personnel et non commercial
Cliquez ici pour la version FRANCAISE
March 26, 2013 - DLE-TEST18 : So as to analyse in deep and for a better understanding of the Delayed Lenz Effect, I have designed and built a Tests Bench named DLE-TB v1.0 (Delayed Lenz Effect Tests Bench). This tests platform allows me to conduct a parametrical study of the braking effect (common Lenz effect) and the acceleration effect (delayed Lenz effect) of the turn speed of a magnetic rotor when a secundary stator coil is loaded or shorted.
This tests platform DLE-TB v1.0 is composed of different parts :
Below, the detailled photos of this tests platform :
Below the schematic digram of the pulse controller of the DLE-TB v1.0
Here the pinout of the Hall effect sensor UGN3503 (full datasheet HERE)
Below, the secundary coil is placed at 1 mm from the magnetic rotor (position 0).
Below, the secundary coil is placed at (30 + 1) mm from the magnetic rotor (position 3).
The setup used for the TEST-DLE18 :
voltage and the current of the DC power supply are measured with
an analog voltmeter and an analog ammeter because this is more
visual for the fine tuning.
A switch is used to short the outputs of the secundary coil.
The turn speed is measured with a digital oscilloscope connected accross the Hall sensor of the power controller.
TESTS RESULTS with the DLE-TB v1.0 :
The secundary coil is slided along the steel rod used as a core from the farther position (80 + 1 mm from the rotor) to the nearest position (0 + 1 mm from the rotor), the turn speed of the rotor, the DC voltage and the DC current are noted each centimeter. The initial turn speed (RPM0) of the rotor and the initial current (Ic0) of the DC power supply are noted when the secundary coil is open.
We call dFreq = Freq(coil shorted) - Freq(coil open) the change in the turn speed : it is positive when the rotor accelerates and it is negative when the rotor breaks .
We call dPwr = Pwr(coil shorted) - Pwr(coil open) the change in the input power : it is positive when the input power decreases and it is negative when the input power increases.
When the coil is shorted, we observe that the turn speed of the rotor becomes greater (dFreq >0) than the initial speed RPM0 and also that the input current is lower (dPwr >0) than the initial current IcO. This happens from a distance of (5 + 1) mm and reach a maximum at (30 + 1 mm) from the rotor.
A inductance measurement and a coil time constant (Tc = L/R) calculation Vs its position have been done.
Below, the detailled results of the measurements conducted during this test :
This series of measurements conducted on this test bench are very interesting, because they allow to reproduce all the various cases of the Lenz effect (acceleration, invariance, braking).
We observe that :
between d = 0 mm and d < 5 mm, there is a common Lenz effect which produces a breaking of the rotor and an increase of the input current when the secunday coil is shorted (dFreq < 0 et dPwr < 0). This is the common Lenz law effect here and used for the Regenerative Braking.
between d = 5 mm and d < 30 mm, we now have dFreq > 0 and dPwr > 0 with an increase of dFreq and of dPwr when the secundary coil is shorted. This is the Regenerative Acceleration Effect used by Thane C. Heins in the ReGenX (Regenerative Acceleration Generator) from PDI
between d = 30 mm and d < 60 mm, we still have dFreq > 0 and dPwr > 0 but with a decrease of dFreq and of dPwr.
between d = 60 mm and d < 80 mm, we still have dFreq > 0 and dPwr > 0 but dFreq et dPwr are constant.
Below the video of the full tests of the DLE-TB v1.0
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