My dad passed away today.

After about 13 years of suffering from Rheumatoid Arthritis my father passed away this morning in Auckland, New Zealand. He was a wife, farther, grand father, gardener, inventor, maker and a friend.

My father enjoying the company of my mum, wife and kids a few days ago.

Sunrise moments after my father passed away. Lake Pupuki in the foreground and Rangitoto Island in the background.

More testing with some odd results

I tried switching to speed closed loop control with some unusual results. Also to a single profile to assist testing and reduce the possability of errors by adjusting 2 profiles.

If I coast backwards, even though forward is selected it accelerates reverse. I could not test the opposite due to the slope of my driveway. If I do a perfect hand brake start, it goes forward.
Back to open loop for now. :(

I hope my VFD does not have some strange fault.

The diff has a lot of backlash so when you lift off the accelerator there is a real clunk and lurch intil the drive figures out -0 torque is being generated and lets go. I anticipate this to be less obvious at road speed.

As I think tuarn mentioned in the past, speed mode might take some getting used to.

I will try torque mode next.

Kogan Agora 'google phone' delayed

The Kogan Agora Andoroid phone has been delayed indefinatly.
http://www.kogan.com.au/blog/2009/jan/16/kogan-agora-be-delayed/

It Moves!

After quite a few months the Electro-Lux is now moving.

The speed control is like controlling the speed on a stepper motor. The throttle is very direct and it tends to shudder like a learner driver. Perhaps I just need to get used to it.

Here is a short video anyway. I will take a better one tomorrow whith no 2 stroke sound effects.

VFD configuration finalised.

Thanks to Tuarn (acmotor) on the AEVA forums for all your help.

Here is my running config at the moment. I will connect the drive shaft on Sat. Wish me luck!

The related schematics are in an earlier post in case you need to make sense of the 3xx settings.

Setup 1 - Forward - Changes from default.
ID Name Value
009 Display line 2 Feedback [unit]
010 Display line 1.1 Dc link voltage
011 Display line 1.2 Reference [%]
012 Display line 1.3 Output energy
014 Local stop Disable (0) Prevents rapid deceleration.
102 Motor power 15.00
103 Motor voltage 415
105 Motor current 28.00
106 Motor nom. speed 1450
108 Stator resist 0.2641 From AMA
109 Stator react. 20.33 From AMA
113 Lo spd load comp 0
114 Hi spd load comp 0
115 Slip compensat. 0
119 High start torq. 0.5
123 Min.f. func.stop 0.1
128 Mot.therm protec Etr warning1
200 Out freq rng/rot 132 hz bothirections
205 Max. reference 132.000
206 Ramp type S2 (2) Gives better low speed control.
207 Ramp up time 1 6.00 Economy
208 Ramp down time 1 3.00 Economy
209 Ramp up time 2 4.00 Power
210 Ramp down time 2 2.00 Power
221 Torq limit motor 348.5 drive Max.
222 Torq limit gener 66.6 10kW max regeneration
227 Warn. feedb. low -4,500.000
228 Warn. feedb high 4,500.000
300 Digital input 16 Setup select LSB
301 Digital input 17 No operation
302 Digital input 18 Latched start
303 Digital input 19 No operation
305 Digital input 29 Ramp 2 (17) Power / Economy switch
306 Digital input 32 No operation
307 Digital input 33 Encoder feedback input A
314 Ai [mA] 60 funct No operation
319 Ao 42 function Fb min-max =0
320 Ao 42 puls scale 66 Speedo Cal
321 Ao 45 function Fb min-max =0
322 Ao 45 puls scale 144 Tacho Cal (Check if should be 150 = 4500/60*2)
323 Relay 1-3 funct. No operation
325 Relay 1-3 off dl 0
326 Relay 4-5 funct. No operation
329 Encoder pulses 40 Set for speed pickup
345 Enc loss timeout 0.2
409 Trip delay torq. 60 Maximum
410 Inv.fault delay 35 Maximum
411 Switch frequency 14.0 Maximum
415 Max. feedback 4,500.000 This value should be 10% higher than par. 205
416 Ref/feedb. unit Rpm (3)
445 Flying start Enable (1)
446 Switch pattern 60° avm (0)
457 Mains imbalance Warning (1)

Setup 2 - Reverse (Changes From Setup 1)
205 Max. reference 50.000
303 Digital input 19 Reversing (1)

The new speed sensor works.

I installed the new inductive pickup today and it works all the way to the maximum speed of just under 4000RPM.

Reverse using the '132Hz anticlockwise' setting is still a problem. In closed loop the motor revs to maximum after a few hundred RPM. I have sent the config to Danfoss support to check out.

Some say that talk is cheap

I say that negative torque recharges my batteries.

I am contemplating building a trip computer and feeding it from data from the VFD.

The sign of the torque figure (signed 16 bit int) is the only way to tell if the system is regenerating. I will incorporate this into the trip computer, also to activate the brake lights.

Charger input finalised

I have finished the charger input side of the system.

Electrical parts are $$$ There is over $150 in these photos.

In the ABS box there is a 10A Earth Leakage / Circuit Breaker, Relay that disables the contactors while charging and the Active and Neutral junction blocks.

There is a caravan power inlet on the outside of the tray with the earth pin filed for 10A instead of 15A.

There is enough space on the DIN rail to add a KWh later.

Phase lost and Earth Leakage trips.

Since there are a few people watching this thread, I have another problem to contend with. 

I keep getting phase lost and earth leakage trips. After a few restarts, the problem usually goes away until the next day. I have double checked all connections. The motor connections were a little loose but the problem persists. Any ideas? The trip current is 3.5mA for the VFD. I am using 10mm^2 3 core+earth, unsheileded. about 4M long. The motor was mega tested when I bought it and I will borrow one to test again.

Here are my latest schematics

I hate Visio, but here they are.

VFD Connections and cab controls


Interlocks, Circuit Breaker VFD and 12V PSU



Chargers and Batteries