Author Archives: leafmotor - Page 25

sensorless brushless hub motor power grid conditions

Posted by on December 28, 2021 Comments Off on sensorless brushless hub motor power grid conditions

sensorless brushless hub motor power grid conditions

Empty factory electronic control system of a power station from the higher blood pressure, voltage 6kV, step-down station outlet side of the maximum and minimum short-circuit capacity: Smax = 230MVA, Smin = 130MVA; Buck branch voltage power distribution station to empty rooms distance 400m, 185mm2 copper power cables from the two parallel transmission, converted to an empty factory 6kV cable into the line at the maximum and minimum short-circuit capacity:

Sbsmax = Sj / (Sj / Smax + XL) = 212.31 MVA
Sbsmin = Sj / (Sj / Smin + XL) = 123.46 MVA

Where Sj-base capacity, take 100MVA
XL-cable reactance per unit, XL = 0.041 Ω

Therefore, the empty factory 6kVA bus minimum and maximum capacity: Sbsmax = 212.31MVA, Sbsmin = 123.46 MVA; empty factory 6kVA single bus segment bus is running, 3700kW motor connected to the higher level bus segment Ⅰ, Ⅰ pre-bus segment connected load reactive power: Qx = 2.10MVA.

sensorless brushless bike motor of the main technical data

The ASU uses Shenyang Blower Factory production turbine air compressor, the drive motor for the Shanghai Motor Factory production T3700-4/1430 large high-voltage synchronous motor.

Motor parameters: Rated power: 3700kW; Rated voltage: 6kV; Rated current: 408A; Rated capacity: 4235kVA; starting current multiple of: 6 times; power factor: cosΦ = 0.9; Frequency: 50Hz; speed: 1500r/min; motor starting torque moments of relative value: 1.8; static resistance torque relative value units: 0.3; synchronous motor pull-in torque relative value: 1.18; flywheel torque: 385kg.m2; maximum allowable motor starting time: 40s; motor allows the number of consecutive starts: 2 times.

electric bike motor kit – error 01

Posted by on December 28, 2021 Comments Off on electric bike motor kit – error 01

Before less than one year, I bought electric bike motor kit from you.
Everything is perfect. But today, when I am went to ride, so LCD started writing error. Exactly error 1 , what is fault of twist throttle.
The throttle is always in full position what means that bike still accelerate. I attached photos. I already have behind me exactly thousand kilometers and i started ride from June.

I tried find out where is mistake and I have suspicion that hall sensor inside of throttle is dead. Supply voltage (black+red) is 4,32V what is ok, but output voltage (blue) is in basic position of throttle is 2,0V and full position of throttle is 2,7V. (I don’t know right values)
Can you help me with this problem, please?

Please press “up” to make it be “1 or 2 or 3 or 4 or 5”
Can’t be 0
There is a “ 5 or 4 or 3 or 2 or 1 or 0” on the Left side of LCD.
* Be “0” – throttle & pedal assist NOT work.
* Be “1” – throttle works (If install pedal assist, pedal about 3 circels,then can drive motor to work)
* Be “2” – throttle works (If install pedal assist, pedal about 2.5 circels,then can drive motor to work)
* Be “3” – throttle works (If install pedal assist, pedal about 2 circels,then can drive motor to work)
* Be “4” – throttle works (If install pedal assist, pedal about 1.5 circels,then can drive motor to work)
* Be “5” – throttle works (If install pedal assist, pedal about 1 circels,then can drive motor to work)

If NOT install that pedal assist, ONLY use throttle to drive electric bike motor. But Should be 1 or 2 or 3 or 4 or 5.(Be 0,turn off throttle)

Disconnect throttle plug..

Always press “down”, if motor works with walk speed.. everything is good that means replace a throttle can solve it.

I tried find a mistake, and I have suspicious on bad magnet inside a throttle, hall sensor is fine, I had him out and he worked good, but if I put him back to throttle, so his behavior is unpredictable.

I think that cable and hall sensor is ok, but last thing is magnet, maybe he lost magnetic..

bike conversion kit torque performance in speed

Posted by on December 28, 2021 Comments Off on bike conversion kit torque performance in speed

A major scientific and technological achievements of my 18 years I found the bike conversion kit torque performance in speed and excellent performance is due to change by the coil – in order to prove the authenticity of my first published the theory – by reversing the DC coil motors, commutation is by phase AC motor. By changing the coil to the premise of achieving the rotating magnetic field in the rotating among each of the stator magnetic pole corresponding to the current conductor always flow in one direction. Can achieve zero speed to rated speed constant torque swing speed, and there is no torque ripple, inverter can be completely eliminated, the chopper will swing popular governor world. Installed on the synchronous motor synchronous brushless DC motor commutator can not be called, is distorting the facts and the scientific community, because it is the by-phase commutation – is the AC motor, it can never find the DC motor torque performance and speed performance .

Rotating magnetic field DC motor, asynchronous motor with a rotating armature of durability and torque performance,sensorless brushless hub motor in speed performance, the performance of the perfect electric bicycle conversion kit, speed DC transformer power does not produce harmonic pollution, Speed ​​costs are very low. It can be raw materials for manufacturing into a more limited market value of commodities, will become the next golden goose, the whole industry will lead to a motor revolution. Engaged in electrical research staff to look at my town scientific and technological achievements, we know that all this is true. Is good to explore the talents of entrepreneurs to create a powerful opportunity.

accelerator problem error code: 01

Posted by on December 28, 2021 Comments Off on accelerator problem error code: 01

I have electric bike assistance that I myself mount, the hub motor wheel has a power of 1000 W and a lithium battery of 13 Ah.For almost 7 months that I use everything was going great and for a moment..I have a default code 01 that appears … and it feels like a strong push in power and a total stop with this error code 01, but it happens very occasionally, we will say that its the 3rd third time already.Looking at the leaflet this code indicates accelerator fault.I reconnected the various connections.Cs pedal sensor, hall, engine power, display etc everything seems normal. Anyone can help me solve this problem, thank you in advance Learn more at..

01_error abnormal Adjustment of speed signal
01_error phase lack of motor
03_error abnormal Hall signal of motor
04_error abnormal torque sensor signal
06_error the motor or controller fault

Product Question of New 26 inch 48V 1000W electric bike kit – front wheel

Posted by on January 1, 2021 Comments Off on Product Question of New 26 inch 48V 1000W electric bike kit – front wheel

I’m interesting your product of New 26 inch 48V 1000W electric bike kit (Item ID #LBCK26481000FN), and having some question as below.

1. Does the kit already include regen function?
2. Is it possible to have a demonstration YouTube vedeo to show me the E-ABS regen feature?
3. Do you have magnet switch instead of Item ID #LBP002BL braking lever, because my current braking lever is an All in one type (braking lever and Shimano in one)?
4. As everyone knows the transportation cost is very high, if I can arrange the rim by myself from USA, can I replace order as following to reduce some transportation cost?
I want to make sure everything is the same as #LBCK26481000FN besides 26×1.95 inch rim. (The hub motor controller, LCD display, braking lever, three button switch, throttle etc…)

1. I always ride a route which include a lot of up and down hills, the longest one is a continuity down hill for 2 km.
it’s a 7% downhill, if you don’t use brake to reduce speed, the bike speed will be up over 45km/hr, so I always
use brake to control speed within a safety area( within 30km/hr), but after through the downhill, the rim become
very hot, it very bad situation.
That’s one of many reasons that I want to put a E-BIKE with regen braking function in my Bike.

According my description as above, is your e-bike kit suitable in this case?

4. Is the attached photo new version or old?
Do you mean that if I place order with #LBCK26481000FN kit set will get new version of LCD display?
If place order with LBC481000L 48V 1000W bike motor controller will get old version of LCD display?

When I downhill, if I release throttle and turn on the E-ABS by switch, but I don’t push the brake lever to make mechanical brake working. will bike glide freely and very fast? is the controller charging battery at this moment?

Normally when E-ABS turn on, the speed should become lower as below, is it right?

When a very long distance downhill (the same gradient),
if freely glide down (without throttle, mechanical brake, E-ABS), the invariable maximum speed is 35km/hr
when turn on E-ABS only, the invariable maximum speed should be lower than 35 km/hr, such as 25~30km/hr

700c 48V / 52V 1500W rear electric hub motor – bike conversion kit

Posted by on October 19, 2020 Comments Off on 700c 48V / 52V 1500W rear electric hub motor – bike conversion kit

* This 700c hub motor kit combines the full E-bike technology: direct drive Brushless Gearless high torque hub Motor to change almost every bicycle into a personal electric bike. Save energy, protect environment and save money with a lot of fun.

Main Features:
>. Rim: 700c double wall Alloy (Rim Fit For: 700 × 18C / 20C / 23C / 25C / 28C / 32C / 35C / 40C tire)
>. Spoke: Black 12 gauge / 184mm Length × 36 pcs
>. Default: Black spokes
>. Optional: Silver spokes — Please leave message.

>. Engine: Bldc hub motor
>>. Voltage: 48V / 52V
>>. Power: 1500W
>>. Efficiency: 90.5%
>>. Max speed: 63.2 kmh — 39.1 mph Default (Optional other speed: 30mph,25mph…please leave message)
>>. Mechanical brake: Disk or V
>>. Freewheel / Cassette: space for single speed.. 6 speed or max 7 speed Default: Fit for Screw on Sprocket (If install Cassette Sprocket,please leave message)
>>. Cable location: shaft end , LEFT
>>. Cable length:100cm / 40″ — Update “3mm phase wires” & “Newest version hub”
>>. Install: spacing of Min 135mm to Max 155mm fork
>>. Noise: < 60 db >>. Surface: Black painted

>. Driver: brushless controller
>>. MOSFET: 12 PCS
>>. With LCD: YES
>>. Rated Voltage: DC 48 / 52 Volts
>>. Min. Voltage: DC 40 ± 0.5 V
>>. Rated power: 1500 Watts
>>. Casing material: aluminium
>>. Maximum Current: 40 A ± 1 Amps
>>. Thermal: aluminum shell and the substrate
>>. 3 phase 120° brushless motor
>>. Operating Conditions: -20~45 °C
>>. Waterproof design
>>. Size: 171 mm L × 82 mm W × 42 mm H

LCD-008HU With USB Port & Color screen , More Function:
* Cruise – Yes
* Reverse (Optional: On/Off)
* Regen brake (C13=0,off. C13=1 ~ C13=5 Strongest)
* Kmh / mph
* Set Max speed ( 0 ~ 72 kmh / 45 mph ) — If hope riding max speed 25kmh, just set LCD to be “25”
* Pedal assist ( 1 – 5 )
* …

Package Content:
1 x 700c 48V / 52V 1500W rear bike motor wheel
1 x 48V / 52V 1500W 12-MOSFET motor controller
1 x LCD-008HU With USB Port & Color screen
1 x Twist throttle — Cable length: 1500mm
1 x Brake levers — Cable length: 1500mm
1 x Three button switches ( control cruise, regen brake, reverse .. ) — Cable length: 1500mm
1 x Pedal assist — Cable length: 1500mm

Net Weight: 11.7 kg
Package Size: 66cm L x 23cm W x 66cm H
Package Type: Cardboard Box

* This 700c bike motor kit system handle a 48V / 52V battery (From Min 40V….47V,48V,49V,50V,51V,52V,53V,54V,55V…. ~ Max 60V DC).

controller for my 16 inch bike motor

Posted by on June 16, 2020 Comments Off on controller for my 16 inch bike motor

I need to know what voltage is used by the bike motor. When it was running on a trike that I no longer have, I think it was a 24v bike motor.

Can you confirm that it is a 24v bike motor or is there someway to determine what the voltage and wattage is?

If so, would you be able to sell me the appropriate controller for that hub motor?

MY SECOND MESSAGE slightly expanded:
I need to know what voltage is used by my 16 inch bike motor.
Is there someway to determine what the voltage and wattage is? Also, is that motor brushless and gearless?
Given that it is a Leafbike.com/Leafmotor.com hub motor, would you be able to sell me the appropriate controller for that bike motor?

On your
https://www.leafbike.com/products/diy-bike-conversion-kit/16-inch-48v-52v-1000w-electric-bike-kit-front-hub-motor-wheel-1162.html
page you show a controller for the 16 inch bike motor. What would be the cost of the controller – the controller only? I do not want or need the
other parts.

looking an electric bike controller for 48V 1000W hub motor

Posted by on June 14, 2020 Comments Off on looking an electric bike controller for 48V 1000W hub motor

I am using a brushless and gearless DC hub motor that is 48V 1000W. I am looking for a suitable bike motor controller for my project.

I want to implement regen braking, cruise, reverse, setting a speed limit etc.
Will this 48V 500W controller works for this 1000W motor?

I am quite hesitant to choose the 48V 1000W brushless motor controller displayed in the web here as I am afraid that the high power may drain too much power from the battery.

I am using a 48V 10Ah battery. It should be sufficient to power the 1000W BLDC hub motor but to power both the motor and controller, it may overstrain the battery.

Can you confirm that your brushless motor controller can set max speed limit, regen brake, reverse and cruise control?
Basically, I just need to buy the three button switch and every of the button can be used to perform on/off operation such as horn, lights, cruise, regen brake etc right?
What is the default max speed limit in the brushless motor controller? Do you change and set the max speed from the LCD display, controller or both? After I set the max speed and I do not want the max speed to be change, is it possible?
The hub motor can still work with the brushless motor controller, even with or without the LCD screen right?

Do you have a similar brushless and gearless hub motor like the one that is:

1) 14″ inch – 16″ inch (including solid rubber tyre)
2) Power is at least 750 W to 1000W max
3) Can implement regen brake, cruise, reverse, set max speed limit

If you have, can I have some details for these hub motors? I need them work with LCD brushless motor controller.

Extra wiring connector after install completion

Posted by on June 14, 2020 Comments Off on Extra wiring connector after install completion

My wife & I purchased an electric 700c front wheel – bike motor kit from you earlier this year.
In my 37+ years working on bicycles the “road bike” brake levers included with our wheel are the first I’ve seen with mountain bike cable connectors.

I’ve completed the installation of the new 700c motorized wheel shipped to us in perfect condition.

I was pleased that the pedal assist bracket and cable were included in the package even though I had to epoxy the pickup to the front bottom bracket housing for it to “see” the magnetized ring portion of the assembly. I use a “five minute” epoxy I’ve been happy with several years now!

I had to purchase and install a new mountain bike fork on our pre-2000 Cannondale tandem to adequately support the electric wheel. I had also to install a rim tape over the spoke head access holes on the wheel where the inner tube fills the space inside the tire. Only the threaded portion of the inner tube valve protrudes from the inner accessible area of the exterior wheel rim opposite the wheel hub. I chose a puncture-resistant slime filled tube to use with the road bike tire on the wheel. Servicing the tire “on the road” with that wheel isn’t a pleasant prospect. I praise God that I have the health, experience and knowledge to maintain and service assemblies of this type!

Question: After completion of the e-bike wheel install and the wiring connections (less the two leads to the yet-to-arrive battery), I still have a white plastic electric connector with 3 prongs within. What might this remaining connector be for?

How-to-build-a-hub-electric-bike-motor

Posted by on June 14, 2020 Comments Off on How-to-build-a-hub-electric-bike-motor

These days hub electric bike motor wheels are used for e-bikes widely. Nearly all of hub bike motor are brushless gearless. Because of low noise, high efficiency, long life are popular with riders.
Order 1 set 12″ 14″ 16″ 18″ 20″ 24″ 26″ 700c 27.5″ 650b 27″ 28″ and 29 inch hub motor kit, convert your common bike to e-bike is so easy. Directly front or rear drive your bike.
The important part is an engine -hub motor. How to build this electric bike motor?

Step 1: winding
Calculate motor power, speed RPM and confirm what type of copper wire would you use. Next is fix a rotor on the steel shelf, wind copper wires by handwork or machine. It takes about 1 hour to done it by handwork. And should use rubberized fabric to wrap your fingers. Nipping copper wires will break your fingers. If you need steel parts for your building process, then make sure you use the.

Step 2:soak paint
After winding should soak paint in order to be insulated. Use brush to put the insulated paint on the winding and make sure be soaked everywhere. It takes about 24 hours.

Step 3:press axis into rotor
Put axis into rotor winding and use a key to fix axis. Use A-B glue to paste three hall sensors on hub motor rotor, put 9-pin (three pin/each hall) into PCB and use insulated wire to fix it. Put 8-pin cable inside the axis and heavy yellow, blue, green wires to connect the three copper wires(Phase A,B,C) separately. Thin red, black wires are be weld to PCB + and – .

Step 4:paste magnet
Paste magnet inside hub, one N pole, next S pole ..one by one. More magnet, higher torque, more power. The height of our magnet is 30mm,6mm higher than other hub motor. In market,24mm high magnet only build max 500w electric bike motor. So our bike motor works at 36V can reach 750w.

Step 5:install rotor winding
Put the rotor winding inside the magnet hub, be careful hand. It has powerful magnetism.

Step 6:install two covers
Before installing both covers, we should press bearing into cover. Use hexagon wrench to tight screw nuts. When you hear “poop” from electric bike motor. That means install correctly. Done it.

Power on battery and use bike motor controller to drive this hub motor. If no any strange noise. It’s okay. You also need to make sure you have a controller that fits with the model you are working with, or else the whole thing might just fall apart.

Hub motor, electric bike motor, bike motor supplier: Leaf Motor Technology Co., Ltd