Charging station at workMeasuring motor and transmissioncoupler to interface transmissionAdapter plate and couplerMotor and tranny bolted togetherMy home built 3 phase 90 hp controllerfront battery packtrunk battery pack
OwnerEric Tischer
LocationDublin, California US map
Web/EmailWebPage email image
Vehicle2001 Volkswagen Passat
4 door

MotorSiemens Siemens motor built for Ford Ranger EV 3-Phase AC
90 HP water cooled 3 phase AC Motor
DrivetrainStock 5 speed manual.

I designed the motor coupling and adapter plate myself.
Controller Tischer AC90 with torque control
I built the 3 phase controller myself. It is running in
sensorless vector mode, which allows control of torque
and speed.

My AC90 controller is now putting out 295A per phase,
and draws 320a at 280vdc, about 120 hp

Water cooled IGBTs

Can be tuned to run any AC induction motor.

I conditioned the hall effect sensors output to produce a
quadrature encoder signal.


Programming language allows algebra, and boolean
algebra, timers, pid loops, comparators...

Soon to be sold on ebay
Batteries25 Optima blue top 55AH, 12.00 Volt, Lead-Acid, AGM
Batteries are from Costco
System Voltage312 Volts
ChargerManzanita Micro PFC20
Volt Blocher used for battery management
HeaterHeated leather seats.
DC/DC ConverterIota
55 Amps at 13.4 or 14.3 volts.


InstrumentationThe industrial inverter I am using came with a 2 line LCD
key pad. It can display motor load, torque output, motor
amps, dc bus voltage... I can also set up custom screens
with scaled values such as "MPH" or "Gallons of gas saved".

Windows software can generate time based trend charts of
any variable, and can log data to a csv file.

-100 to 300 amp ammeter, I can peg it in both directions
Top Speed100 MPH (160 KPH)
The car will go 100+ mph, but I have only driven it up to 99.



Acceleration0-60 is 16 seconds using only 2nd gear
0-50 is 10.5 seconds

It will easily break the front wheels loose in 1st gear.
Range35 Miles (56 Kilometers)
Driving 21 miles at 65mph brings the voltage from 328 to
312. To recharge back to full requires 3hr20m 10A 230V.


Watt Hours/Mile362 Wh/Mile
Driving 21 miles at 65mph brings the voltage from 328 to
312. To recharge back to full requires 3hr20m 10A 230V.


EV Miles
Current:1,800 Miles (2,896 Kilometers)
Seating Capacity5 adults
Curb Weight4,010 Pounds (1,822 Kilograms)
actual weight without driver.

Installed custom rear springs to prevent sagging in the rear.
Tires4
Conversion Time1 day per week for 9 months
Conversion Cost$18k so far.

$5k was for batteries
$2.5k was for the charger
$1k for cable, lugs, angle iron
$1.8k was for the car
$800 for my Siemens motor
$800 for machine work
$3000 for parts to build my inverter.
Additional FeaturesMy inverter should be able to run any AC induction motor!

Electric power steering using a Renault Kangoo electric pump and custom hydraulic
hose
Keep an eye out for my inverters on ebay!

code by jerry