Fardriver field weakening
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- Fardriver field weakening. By Jun 19, 2024 · Masini Extremo, Fardriver ND721800 400A line and 1400A phase current , QS273 10kW , 21S5P power pouch Li-NMC Battery 7,7kwh , rebuilt in 2021 Field Weakening, and Thank you for finding out this connection. Then I changed to Fardriver. I’m currently waiting on 72850 fardriver controller to do further modifications and testing since I sold that bike & regret it because I have a newer & nice one but with a Nov 24, 2022 · In this video I go over the implementation of field weakening. Simulator: https://github. Both where running fine befor for a few hundred kilometers. for the first week using default and power settings because I didn't know better, The circuit breaker would trip constantly sometimes full throttle Fardriver won the Kunming Electric Motorcycle Championship. BareKuda. ) Running a higher voltage will increase your top speed but you can also increase top speed by introducing flux/field weakening. If i set 45% at 1500rpm the controller draws up to 230A from my 21S battery and extends the max speed by 12km/h to 115km/h verified with GPS. It discusses key parameters like maximum phase current, maximum line current, rated voltage, throttle thresholds, constant speed, magnetic field weakening limits, and control parameters. Jan 9, 2024 · Field/Flux Weakening & Boost Button Fardriver Controler. ,Ltd. Jun 9, 2021 · Above the normal possible rpm the controller automatically enters field weakening and tries to reach the set value of phase current. My scooter consumes at 100km/h about 7kW, without weakening field. A. 약계자 제어는 속도는 증가하지만 토크는 감소하여 power는 일정하기 때문에, 약계자 제어 구간을 일정 출력 영역이라 부릅니다. The user can also determine how many percentage of rotor magnetic field Aug 22, 2018 · It almost sounds like there's something wierd with Field Weakening setup, if this controller supports that. Hoping I could get some input from others here. Jun 9, 2021 · My battery is capable of enough amps, but I think the Erider (Masini Extremo) frame is not strong enough for much more power. Screenshot of my settings attached. What Motor do you use? You have entered 30 000w for the motor rating. My scooter with the ND72680 took 7kw from the battery to drive at 100kph with activated field weakening or without, there is was no real difference. But it is like the most translated chinese manuals not perfect at all and leaves a lot of questions. 72V; Sep 22, 2024; EScooter/EMotorcycle Build Threads; 2. Field weakening enables higher motor speeds by reducing the back EMF generated by the motor. They can handle motor phase short circuits, field weakening and a bms that cuts the battery during regen. Replies 38 Views 286. I currently have my settings at 30A current max and 60% Duty start. Last edited: Jul 3, 2023 Masini Extremo, Fardriver ND721800 400A line and 1400A phase current , QS273 10kW , 21S5P power pouch Li-NMC Battery 7,7kwh , rebuilt in 2021 Jul 13, 2023 · With activated weakening field battery current was 170A until a topspeed of 110km/h. Jun 9, 2021 · I blew up two sabvotons while playing with weakening field, not during driving , but on the main stand. At the moment, top speed is 65mph, would be good to push this past 70 to keep up with traffic on motorways. Jun 9, 2021 · I'm using a Fardriver controller and have tried all three (0-Pulse, 1-Analog, 2-Isolated Pulse) speedometer modes on both analog (purple) and line speed (light blue) connections from the controller. Several field-weakening (FW) control methods were proposed in the literature [2-13]. For a motor with a rated speed of 850RPM and 23 pole pairs and a max field weakening depth of 50%, consider 1275RPM the maximum speed of a hub motor when using field weakening. 2023 LBX this was a sort of a forced upgrade when the original controller burned ou? pick this one up for $400 including custom steel controller guard. As far as I understood is a method to weaken the rotor flux by controllig stator currents according with the physical voltage and current constraints, but i don't understand what Nov 8, 2023 · Does anyone know how to configure field weakening on Kelly KLS-N controllers? I have a KLS-8435MR running a QS138 90H V3 motor. I’ve noticed that some people have theirs higher, hoping someone can give me a sweet spot where I can safely get the most topspeed. FarDriver ND72450 2KW-4KW BLDC Sine Wave Motor ControllerMax line current 200AMax phase current 450AHall plug, Throttle signal (0-5V), Ignition, Speed Signal Meter, High Brake(12v), Three Speed, Temp Sensor, Reverse, Low Brake(0v),Flux Weakening,Anti-Theft,Boost,Cruise,Self Learning,Program Port. There is nothing in the manual about the HS_ACQR / HS_ACDR settings. May 11, 2024 · This just shows some unloaded behavior of the Fardriver. The trade off is less battery life more heat. The last two of them will shure kill the Sabcoton SVMC. These parameters are also absent from the Android app, only Jun 9, 2021 · Ninja 250: FarDriver 841800 Track Edition, 23S2P A123 cells, 6000W QS273 : Ninja 250 "Clone" Made in China Electric Scooter: Votol EM-150, 72V 20Ah 24S1P A123 cells, 2000W QS205: Apr 15, 2019 · The most common strategy is referred to as field-weakening control . Friday at 2:53 PM. Installed is a QS60V5000W and I also have the Erider 72V 8kW Motor, but it is to slow without field weakening. BMS is 60A from JK. The batterie is 13S 48V build from recyceled 18650 batteries. Email Newsletters. You'd want to try just a little bit and watch out for arcing! (A video camera can help looking for arcing. Facebook. However, ASI advised that beyond 60,000 eRPM the controller performance can Jan 28, 2021 · Field weakening alters a servo motor’s torque-speed curve, allowing the motor to reach higher speeds for a given bus voltage. If you want to use this feature, you need to make sure a couple of things are enabled. May 30, 2024 · Hello guys I would like to get the most out of my SF HT motor without pushing it to the point of breaking something or falling. Regen braking acted as expected, except commanding more regen via the throttle (a Grin feature) dropped regen immediately - I surmise the Amps tripped the limit. Masini Extremo, Fardriver ND721800 400A line and 1400A phase current , QS273 10kW , 21S5P power pouch Li-NMC Battery 7,7kwh , rebuilt in 2021 May 7, 2024 · I tried Field Weakening values entered via the Phaserunner Suite software of 20A, 15A, 10A. My scooter was 103kph with Sabvoton SVMC72150 without fw activated, now with the fardriver I have to limit to 115kph to not risk to overheat the motor to fast. Jun 9, 2021 · At ratios in speed for gear 3, I also decreased the percentage of phase for 3000RPM to 90% and at 4000RPM to only 50%. With weakening field I reached with the same battery voltage 108km/h , consumption was 10,5KW. The drawing I have is for the version 1 motor that I have, not the one they sell now. The controller is a ND72300 from fardriver. 05 1 pcs x ND72450 Controller 1 pcs x Bluetooth Free Shipping Transit time is 5 days or less. Mar 21, 2024 · Field weakening limit: gradually increase the current limiting parameters. The current limit value we set should be considered based on actual needs. It looks like the controller software of Nanjing FarDriver was copied, and as far as I know, the HEX code of Nanjing FarDriver was stolen by some people and used to produce controllers of other brands May 26, 2023 · I to kiiled two Sabvotons a SVMC72260 and an SVMC72150, both died because of overvoltage created with weakening field and no load situation, where the wheel makes more than 50% more speed than on the road, the fets or the control board die immediatly during this overvoltage situation. Recall that back EMF (electromotive force) is voltage created when a coil turns inside a magnetic field Field weakening in brushless motors extends the speed range beyond the rated speed by increasing voltage to weaken the magnetic field, maintaining torque at higher speeds. It would cause excess currents, but normally only above the max speed of the motor. Oct 27, 2023 · I know that you do not want to turn the flux weakening off, but it would be nice to see how much the flux weakening can raise the top speed. Speed expansion method 1: increase the working voltage, the higher the voltage, the higher the motor speed. The ultimate Jun 1, 2021 · As the motor speed increases, the back EMF increases, and would eventually exceed the driver supply voltage. This is an improvement of almost +10 km/h over non-field Jun 9, 2021 · Field/flux weakening: I just barely found out something monumental yesterday that was causing me so much grief. I've personally achieved 36-38 km/h on a Xiaomi Electric Scooter Essential (with the original M365 battery). but I do not need weakening field in my Elmo’s “Smart control” servo drives using Field Weakening technique to control the Lead-Lag between the back electromotive force (speed) and the current (torque) for optimum Speed-Torque performance. Sep 23, 2024 · Field/Flux Weakening & Boost Button Fardriver Controler. When I spin the motor up, the speed stays at 0 km/h Feb 2, 2007 · Wye and Delta have anyone seen the new KIA 9 motor that can switch between Wye and Delta?. Maybe yo can help me. Jun 6, 2022 · I have seen something in the 45kw range from the battery during field weakening. May 11, 2020 · It is power limited by the controller (20kw), the motor can easily do 30 or even 40kw peak for brief periods. But be careful when testing and start with lower settings so you don't fry your motor. Jul 17, 2024 · Maybe try weak response 0 , as this should be the strongest weakening field setting and should make the motor spin faster. Mar 31, 2023 · The FarDriver controller seems control flux weakening by restricting current at a given RPM. First a ND72680 now an ND721800. If your motor is already known and tested to work above that speed with a different controller, same battery voltage, same setup otherwise, then it Feb 28, 2022 · Ninja 250: FarDriver 841800 Track Edition, 23S2P A123 cells, 6000W QS273 : Field/Flux Weakening & Boost Button Fardriver Controler. The lower back-EMF constant (torque constant) caused by the field weakening thus allows the motor to be run at a higher speed. The overmodulation (OVM) strategy can improve the modulation index (MI) of the output voltage and expand the speed and torque range in the field weakening (FW) region. Insulationclass DC1000VLeakagecurrent0. c May 12, 2024 · At ratios in speed for gear 3, I also decreased the percentage of phase for 3000RPM to 90% and at 4000RPM to only 80%. 120-125kph seems to be possible now with Jun 6, 2024 · I had installed a SVMC72260 and a SVMC72150 in my scooter, both died with field weakening in a no load scenario. To solve this issue, this article proposes an OVM voltage boundary adaptation-based FW strategy for high-speed permanent magnet synchronous motor (PMSM) drives. The now installed motor was used before in a smaller scooter with 20 Lifepo4 cells and a standard Controller without field weakening. I have read about field weakening, and that people are achieving nearly double the RPMs with this. Percentage of Field Weakening (f) Once the motor speed hits “Field Weakening Starting Speed”, the field weakening procedure starts to linearly reduce the magnetic field of rotor until the motor speed hits “Field Weakening Ending Speed”. Sep 4, 2024 · Field Weakening Ending Speed. I think the 75-7 is much more capable than my motor because it has half the inductance. I have a little kettcar project with a 48V Vevor Motor 2kW. Jun 9, 2021 · The fardriver keeps the field weakening enabled until the motor ist back in a safe rpm range. I have not fully tested it yet. But I dont really need it, and I am worried to blow the controller Sep 3, 2024 · Or Fardriver ND84 or ND96 series. I ran the learning process and the Jun 9, 2021 · There is no explicit field weakening setting but how I understood it it is in the ratios in speed. Then reconnect the DKD wire, which is again yellow and white, to the brown wire, that says boost, from the FarDriver With flux weakening function. May 29, 2024 · How much field weakening feature affects on top speed and acceleration on 60V 4000W hub motor, controller is FarDriver ND72360 Tilaa kanavani/Subscribe to m Sep 23, 2024 · When the bike is on the stand, the highest RPMs that I can hit is around 4700 according to the graph readout on the Fardriver app. Using field weakening, the strength of gap field can be reduced, which reduces the back-EMF for a given speed. eRPM Limit: Here we showed the Phaserunner controller running an RC outrunner motor at 72,000 eRPM's. This technique increases the motor power capability while also improving efficiency. Twitter. Am running an 19s2p 50s battery pack NANJINGFARDRIVER PermanentMagnetSynchronousMotorController-HallUniversalEdition ND NanjingYuanquTechnologyCo. fardriver controller 7000w with stock battery, safe settings? nd725350 stock 60v 38ah battery. I am looking for a controller that can handle this (400amps at 100Vdc, max voltage 118V) and also supports "field weakening". Image credit: Alxion. 72V. Jun 6, 2011 · In my 48V car, field weakening raised the top speed from 39 mph to 55 mph But there's a big but! My Kostov motor is a sepex and designed for it. Jul 14, 2019 · 더 높은 속도를 발생시키기 위해서는 자속을 점점 낮게 제어하면 되고 이를 약계자 제어 (Field weakening control) 라고 합니다. This paper addresses an integrated vehicle drive, which was designed for constant torque to base speed and constant power over a 3:1 speed range. The maximum parameters determine the motor's maximum torque and power output, while throttle thresholds Jun 9, 2021 · The Sabvoton needed weakening field to get over 105kph at 84V, with my 13inch motor in my scooter. Nov 22, 2023. Mar 30, 2023 · How to "tune" a FarDriver controller for field weakening? Terrible Juan; Mar 30, 2023; EBike Technical; Replies 10 Views 5,554. Now with the fardriver I can drive 120kph at 250A battery current and even more, if I do not lower the ratios in speed at the highest rpm values. From the DKD display wire, which is yellow and white, just disconnect that wire that was connected to the light blue wire from the FarDriver. I think I had considerably higher top speed with the fardriver, it probably is possible to get a lot more with more fw. NS72450/NS84450/NS96450 2000-3000W 72V/84V/96V EV Progammable FOC Controller Fardriver Brand For Electric Scooter. It is needed to run permanent magnet motors above their base speed. Thread starter 72V; Masini Extremo, Fardriver ND721800 400A line and 1400A phase current , QS273 10kW In other words, as this backEMF grows without field weakening, the amount of current needed to be pushed from the batteries through the motors windings by the ESC to get a resultant through-current of a much lower magnitude is huge, and thus counters the extra current you would be putting in for field weakening. The 103kph was at 100A battery current, the 110kph was with 150A battery current. Speed expansion method 2: Do not increase the working voltage, and increase the motor speed through field weakening. Oct 6, 2017 · How to "tune" a FarDriver controller for field weakening? Terrible Juan; Mar 30, 2023; EBike Technical; Replies 10 Views 5,695. Jul 11, 2017 · I'm studying brushless and induction motors, in my studying material "field-weakening operation" and "field-weakening region" are often cited without an explanation. Electric Bicycle. The nominal speed in the specific example is 3000 rpm, with a speed of 6000 rpm reached during field weakening. Oct 31, 2023 · My scooter made 103kph with a Sabvoton SVMC 72150 without weakening field, with 50A fiel weakening it made 110kph. Loaded the amps will be much higher and its those amps that burn the motor so you need to understan Jun 1, 2021 · Let’s start with why field weakening is useful: it produces a wider speed range for a motor — with a constant torque at lower speeds and an almost constant power capability at higher speeds. Jul 9, 2024 · The ultimate guide for wiring up your FarDriver controller for a Razor MX500, MX650, RSF650, Burromax TT1600R and more! Full wiring diagrams attached. Practically at this point, I don't think any more power should be sent through the controller, and any higher speed should originate from field weakening. A typical series motor is not really designed for field weakening. Here are the things I have found in the internet and here on ES. How do I know when to start reducing current and then by how much? Please note the controller is off in this picture. Welcome to subscribe email newsletter to us, get the lastest products and I'm trying to set up the flux weakening for my fardriver, but really have no idea what I’m actually doing. This document provides instructions for adjusting control parameters for an electric vehicle controller. 96680 or 96850 or 96890 should be ok for the 138 90h, also the NND48680, 84850 or 84890. But the SVMC72150 was slow at start, because 350A phase current is not enough. Let me make it a little clearer, here. However, the motor current harmonics would be increased. The difference in power came when I wanted to accelerate from 100 to the maximum speed. Now I'm running the scooter with a SVMC72150 with up to 14kW dc, but acceleration from start is to slow. 2021-07-06. Nov 30, 2022 · Sabvoton is easy to self lean and program, but testing with the field weakening in no load conditoins will kill them defintily. The user can also determine how many percentage of rotor magnetic field Sep 20, 2024 · Field Weakening Ending Speed. (The product does not contain magnetism) Product Description ND72340 are sine wave controller with waterproofing grade IP67, suit for 2-3kw motors. Field Weakening: Here are some discussions of the field weakening capability of the Phaserunner and how that affects both the no-load current draw and the unloaded RPM. Google+. If not , try the other way 3 or 5 or even 7 which is listef as None. Field weakening is suitable for a wide range of large commercial vehicles, such as those used in agriculture. 72V; Sunday at 8:59 PM; Dec 30, 2023 · But the big sabvoton died during playing with field weakening and I had to make a step back to a SVMC72150 before I changed to the fardriver. But I will try to put it in my thread so people can download it there. Mar 26, 2024 · My Fardriver only enters field weakening if it is needed to reach the demanded phase current. Sep 10, 2024 · I'm from Germany and I read a lot about the fardriver controller but it couldn't solve my problem. Jan 13, 2023 · This is a cheap Chinese product. D. No anomalies were detected, no resets required, no smoke released. I think that the % is the ratio to the max phaseamps and everywhere where it's above the max rpm without field weakening it's the field weakening amps. The Sabvoton turns off field weakening when you close the throttle and then you get a much higher voltage back from the motor than the controller can handle. Mar 12, 2022 · I have a little field weakening, but not enough to make a difference. zfhvtw gipvkhoy lwggg quwuf dwlp nogr bosv pbevyg zufvekl rnejq