Lasted edited by Andrew Munsey, updated on June 14, 2016 at 10:02 pm.
It's the very first setup.
1. RV prime mover works with single phase as described
2. RV alternator works in resonant modes as described
3. circulating power is much bigger than input power, even if the system is still untuned (PM needs 165 Volt, not 220 for correct impedance match).
blue motor as prime mover:
380/660 V Delta/WHY, 5.5 kw, 2830 rpm, 50 Hz, wired for 660 V, from croatia (Koncar A03587)
green motor as alternator:
380 Volt Delta, 5.5 kw, 2780 u/min, 50 Hz, old GDR-motor from industrial washing machine.
Caps are ac 450 V rated oil caps.
221 V, 3.16 A ac
415 V, 10.72 A ac
System is untuned as yet. No power extraction yet.
Tests with 30Kw 3ph EM alternator in RV mode
info about 30Kw EM RV and first test run
Some values of the blue unit:
- german "Finsterwalde"-Type 4-pol 3 ph EM excited alternator..still UNPAINTED )
- 300 kg
- 30 kw 380 Volt
- 4 exciter coils (stator) and 3 phase rotor
- 4 slip.rings (3 phases + GND)
- DC commutator for driving exciter coils with 75 volt
Unit is modified to run as EM-RV prime mover. Its the very first setup...nothing tuned yet.
:- brushes from DC-commutator are removed
:- DC coils are driven from extern by 220 volt battery assembly (34 x 6V batteries in series, from emergency power supply), in series with 1000 watt heating cartridge to limit excitation current
:- GND is floating
:- cap size is 95µF (400 volt AC rated)
:- unit is accelerated towards its synchron speed (1500 rpm) via 1.5 kw 3 ph asynchron acceleration motor(the green one in "EMRV2.jpg"), linked via V-belt
:- 220 volt ac is connected as soon the unit reaches the rated rpms, and acceleration motor is switched OFF
:- unit stays still in slip and trails the off-state acceleration motor at 1500 rpms in RV mode and remains stable
:- more tests and numbers (and more color )) will follow...
Today this units are sitting on top of a hydraulic driver system that is able to turn both 300 kg RVed EM alternators far over 3000 RPMs, and speed is stepless tunable for resonance fine tuning. We got more than 50 kW in resonant 3 phase rotation even without exciter current.
We got more than 50 kW in resonant 3 phase rotation even without exciter current.
"First I tested whether such a big unit can run in RV prime mover mode. Next is, that we can create high Q 3 phase resonance in RV alternator mode with that mounsters. Hector stated that every PMed or EMed RV prime mover is OU already. Alternator is OU in any case."