Juni 2007 von EV Source
Thanks, that’s clear now.
Another question, what’s the difference between Zilla 1K 300V driven with 20 batterie in one string nominal 288 Volt and
The Zilla 1K 156V driven with 10 x 2 batteries in a string nominal 144 Volt ?
Or what’s the advantage to put 288V in the controller and take out 160V only?
The advantage of having a higher input voltage is a maintained output voltage during acceleration.
For example, let's say you have a 156V battery pack, and a 156V Zilla controller. Right when you hit the pedal to start moving, the motor will see 156V. But almost instantaneously, the batteries will begin to sag as the current flow increases. Suddenly, the input voltage to the controller drops, as low as 7-8V per battery, or roughly to 100V! Now, the voltage that the motor is seeing is only about 100V. Your performance decreases significantly.
Now let's say your battery pack is 288V. As your load increases, the voltage input to the controller will sag as low as about 185V - however, the controller is still able to output 160V to the motor.
Make sense?
-Ryan
Hi Ryan,
I got this answer from Netgain.
At the end they say :
" BTW: The motor armature should never see more than 170 Volts, so the
288 volt figures would represent a theoretical number...
What does that mean ?,
It means you should never run a WarP motor at over about 170V 
Do I need the smaller Zilla?
Or is it only a question of Warranty?
Do the parts fit together?
The Zilla's output voltage is configurable. You can set the motor voltage at 160 or 170 volts, while the input voltage to the controller is actually much higher. It is a very nice (and critical) feature of the Zilla controllers.
Let me know if this needs any further clarification.
Regards,
Ryan
Mai 2007 von EV Source
Josef,
I am very sorry that it has taken so long for me to respond! There has been a deluge of e-mails in the last few weeks, and I'm just catching up!
I’m new in the EV scene and I want to do a conversion with a 9” single motor.
I plan to do a powerfull streetcar about 3300lbs with economic mode for a bigger range.
For the conversion I’m interested in:
WarP 9”
You might consider an 11" motor for higher performance. A 9" will work fine, but might not produce the results you are looking for. You could also couple a WarP 9 to a TransWarP 9 for really high performance!
Zilla Z1K HV 72-300 with Palm and cooling kit
These currently have a 6 month lead time, so please plan accordingly.
Mancanita PFC 20
At most about a 2 week lead time on these. I have been carrying them in stock lately, so no problems on lead time here.
Throttle PB6 5K
I would use the Hall-effect Pedal Assembly (HEPA) for smoother operation and longer life.
Can you help me and offer me the things I need for a conversion like that.
What size fuse and Main Breaker do I need
It is rather difficult to find breakers for the 300V range. I don't think most use a breaker at higher voltages such as this, just a fuse (even though a breaker is desirable).
I’m planning 20 batteries with 105 Ah.
Plan on only about 60% depth of discharge for longest battery life, so you really will only have about a 60Ah battery. Take that into account in your calculations.
Do you know, how long it takes to charge them with the PFC-20 at 50% DOD? Is it 2 1/2 hour?
That sounds about right.
Do you see anything I forgot in my thoughts?
Not really, it looks like you've planned out what you need pretty well.
I get the cables from a local dealer here in Switzerland.
Otmar told me that you’ve got reservations in his production line.
This is true, however, most of these are already claimed.
What’s the delivery time, and can you pack the whole stuff on one palet ready for seafreight shipping?
I should be able to arrange combined shipping in a manner such as you mentioned for the best shipping rate.
When you know the size and weight I can get then a quote for the shipping.
Are the components you listed exactly what you would be purchasing? If so, I can put together a shipping estimate. However, if it isn't shipped until the controller is ready to ship, the estimate could be off by quite a bit by then! It might make more sense to ship a few smaller packages to get the best rate (fuel prices/shipping charges don't seem to be coming down!).
Please let me know if you have any other questions, and I will try to respond more quickly!
Regards,
Ryan
