| Owner | Arber | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Location | Lower Carniola Slovenia map | ||||||||
| Web/Email | WebPage | ||||||||
| Vehicle | 1992 Mazda MX-3 1.8 V6 Coupe | ||||||||
| Motor | AKOE 132 2.2.100024 3-Phase AC 28KW, 75V, 3phase motor by Fleckmachines Now rewound to 180V per phase for total battery pack of 370Vdc. | ||||||||
| Drivetrain | Front transverse drive | ||||||||
| Controller | Homemade 3phase inverter Zapi ACe5 90kW MOSFET controler programmed with torque software. Motor set up after 2 weeks testing. Now drives excellent. Consumption cca 140A at 100km/h on a flat road. It seems i tweaked the PID settings so motor doesnt draw current as much on a flat road. EDIT: With ramping done and fine tuned motor draw at 120km/h is now 140A. I just gained some range. EDIT2: I built my inverter according to Johannes Huebner kit. It is 300A up to 500VDC. | ||||||||
| Batteries | 100 Kokam Kokam unique cells SLPB 125255255 85Ah, 3.70 Volt, Lithium-Polymer This cell is made for 1,5C continuous and max 3C discharge. Cells do not like overcurrent and can destroy demselves if pushed over C limit! Since i have max 300A IGBTs and relatively high voltage this is not a problem :). | ||||||||
| System Voltage | 370 Volts | ||||||||
| Charger | DIY offshot of EMW charger Charger is now homemade EMW 10kW 3phase charger, charging at 370VDC 28A. At 96%SOC BMS signals charger and it then tapers to 8A. | ||||||||
| DC/DC Converter | Meanwell Meanwell 600W watertight model Good waterproof DCDC. Its quality is that it can be started remotely evfen if there is no 12V present :). | ||||||||
| Instrumentation | original + EV display Trying to make tachometer work by using controller signal - 3 pulse/rotation. EDIT: I used DIY fitting and aluminum signal roller with riveted Fe plates. It gives 3 pulses/rev and RPM indicator works as before! Motor temperature is indicated by a multicolour LED driven from inverter port. | ||||||||
| Top Speed | 100 MPH (160 KPH) For now! I have controller limited when I made 900A fuse by paraleling two 500A. Also V/Hz is still limited to 185Hz. I now run with 700ARMS. I suspect 100mph final speed on flat road. However amp draw is humongous at that speed. EDIT: I got to 160km/h and kept it there for like a minute or so. Amp draw is substantial and temperature went toward 140deg C. I got it limited to 180Hz now which is cca 160km/h in 5th gear :). EDIT 2: I finally got to 180km/h and kept it there for 2 minutes. Its scary, almost no sound but terrain goes past lightning fast. EDIT 3: Now i have controller limited to 80kW and slip is tapered from 3500Rpm so i dont exceed 250A! | ||||||||
| Acceleration | That is the best part. Motor has the same torque as 1,8 V6 before, but from 0rpm. I measured 7s to 100km/h (60mph). Car pulls really well. Additionaly i set the settings so i can just burn rubber from take off, if i want. There is some traction control if one wheel loose traction ie. on sand, power to motor is cut for a brief moment and restored when traction is good. Electronic ABS i guess. EDIT: Acceleration is still very good despite rewinding. | ||||||||
| Range | 160 Miles (257 Kilometers) At least, but with highway speeds i think 85 miles is more likely. EDIT: Put 2 more 200Ah batteries in so the range should be cca 100miles. EDIT2: Since i drive with LiPo pack in paralel i get cca 200km range at 100km/h on highway! EDIT3: Range with 30kW batttery is 200km easily. Highway draws lots of amps though and i have to be carefull still. I think range is on par with new Kia Soul. | ||||||||
| Watt Hours/Mile | 300 Wh/Mile This is indicated. I will check the speed with GPS. CCA 185Whr/km | ||||||||
| EV Miles |
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| Seating Capacity | 2+2 since MX-3 isnt meant to carry grownups in the back. | ||||||||
| Curb Weight | 2,500 Pounds (1,136 Kilograms) cca stock curb weight! | ||||||||
| Tires | 195/55R15 Continental something EDIT: I use 185/65R14 Dunlop Winter response 2 and i get only 3% reduction in range for autumn conditions. Well see how it goes, in summer i will replace old 195 tires with 185 dimension... EDIT 2: I use 195/55R15 Dunlop Blue response now and i see a big range increase. | ||||||||
| Conversion Time | 11 months working + 1 year planning and gathering info... Still ongoing mods... | ||||||||
| Conversion Cost | 16K euro including car cost + 10K€ for 100 new LiPo cells, hope they last better than chineese... | ||||||||
| Additional Features | I use DIY BMS as a bottom balance assist. Designed by Neville Harlick from New Zealand and assembled by me. It shows total voltage, cell voltages, cell temperature and is able to disconnect charger at preset cell voltage. Can be used to connect to a PC using serial port. Charging port setup for 50A dc charging using separate 8kW 3phase charger. Charger is work in progress still. EDIT: BMS now works top balancing and keeps my cells safe for two years now. Charger is controlled by two relays, one off signal and one reduction to 2A signal. EDIT 2014: RPM indicator works perfectly with hall sensor and 3 magnets on motor shaft. Dont know how i went without it. EDIT 2016: I use LiPo cells now and i see greater energy density. New water cooled inverter goes up to 500VDC and more if one would want it. I see much less amps and motor heating. Inverter can work in cruise control and i use it very much :). |
1992 Mazda MX-3
“MAGLEV”
Last Updated 05-27-2016
Copyright © 1997-2024 by Mike Chancey