Tag Archives: hub motor - Page 2

Three-phase asynchronous hub motor controller works

Posted by on March 19, 2025 No comments

Three-phase asynchronous hub motor controller works
Master formula n1 = 60f / P, S = (n1-n) / n1, n = (1-S) 60f / P, at the same time understand their significance (very important), to be able to make flexible use of these formulas to calculate. Also remember: Usually bldc motor driver at rated load slip SN is about 0.01-0.06. Book to focus on the example grasp.

Three-phase asynchronous hub motor driver nameplate data
(1) Model: grasp the book’s examples.
(2) Rating: general knowledge, to master the rated frequency and rated speed, our frequency is 50 Hz.
(3) Connection method: a Y-shaped and angle.
(4) Insulation class and temperature rise: the definition of control allows the temperature rise.
(5) work: general understanding.
Three-phase asynchronous hub motor controller of the mechanical properties

Master the rated torque, maximum torque and starting torque relationship. The formula to master the book and be flexible calculated. Bearing in mind the following:
(1) in constant rotation, hub motor controller and the resistance torque of the torque must be balanced.
(2) When the load torque increases, the initial instant hub motor driver torque T (3) the general three-phase asynchronous hub motor driver overload factor is 1.8-2.2.
(4) hub motor controller had just started n = 0, s = 1.

The difference between ordinary motor controller and hub motor controller

Posted by on March 18, 2025 No comments

The difference between ordinary motor controller and hub motor controller

Generally refers to the hub motor controller. Brush DC motor controller stator magnet (or excitation coil), the rotor of the coil. As the current need to enter the rotation of the coil and the coil rotated 180 degrees due to be exchanged once the direction of the current flowing through the coil, therefore, used for brush DC motor controller connected to the body coil and current. Reversing the direction of switching bodies with a commutator and brush composition.

A hub motor controller generally coils on the starter by the rotation axis of the magnet mounted on the output drive shaft work. To solve the current problem for the use of Hall devices measured magnet pole position, the control circuit to external change, to change the current direction.
Hub motor controller because there are no brushes, long life, motor controller structure has been simplified.

bike motor controller torque performance

Posted by on March 15, 2025 No comments

bike motor controller 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 coil is hub motor controller, by reversing the 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. “Replaced with the current tracker commutator and brush,” the conductor of the stator current direction is always tracking the rotor poles, can achieve zero speed to rated speed constant torque swing speed, and there is no torque ripple, inverter can be completely eliminated governor, governor of the chopper transformer will be popular in the world.

Installed on the synchronous motor synchronous brushless commutator can not be called bike motor controller, the scientific community of distorting the facts, because it is the by-phase commutation – is the AC motor, it can never find hub motor driver torque performance and speed performance.

Rotating magnetic field hub motor driver, with the durability of induction motor and rotating armature hub motor driver torque performance in speed performance, is the most perfect performance of the motor, speed control will not produce direct current transformer harmonic pollution in power, speed cost is very low. It can be raw materials for manufacturing into a more limited market value of commodities, will become the goose that lays the golden eggs, the entire motor industry will lead to a revolution, the rotating magnetic field hub motor driver to the power of today’s IGBT IEGT capacity, single power to do 50000KW is easy. Engaged in electrical research staff to look at my town scientific and technological achievements, we know that all this is true.

hub motor controller main components

Posted by on March 15, 2025 No comments

hub motor controller main components
hub motor controller includes power and control of the Department of the Ministry of Figure (1): Power Ministry to provide three-phase power to the motor, control by the Ministry of the demand for converting the input power frequency. Department of directly to the DC power input (typically 24V) or AC input (110V/220 V), if the input is alternating current converters have been the first (converter) to DC. Either DC or AC input to input into the motor coil will be required before the DC voltage from the converter (inverter) turn into a three-phase voltage to drive the motor. Converter (inverter) generally consists of six power transistors (Q1 ~ Q6) into the upper arm (Q1, Q3, Q5) / lower arm (Q2, Q4, Q6) connected through the motor coil motor as the control switch. Control Department provides the PWM (pulse width modulation) determine the frequency and the power transistor switch converter (inverter) commutation time. DC bldc motor driver generally want to use the change in speed when the load can be stabilized at the set value will not change too much speed control, so the motor equipped with Hall sensors that can sense magnetic fields (hall-sensor), as the speed The closed-loop control, but also as the basis for phase sequence control. But this is only used as a speed control and can not be used as a positioning control.

20 inch front wheel hub motor for cargo bike

Posted by on March 15, 2025 No comments

Q:I am interested to learn more about the 20 inch 48V 1000W electric bike kit – front casted hub motor wheel
Item ID #LBCK20481000FM
Main Features:
Hub: Aluminum casted ( tire: 20 × 21/4 or 21/2″ )
Engine: Bldc hub motor
Voltage: 48V
Power: 1000W
Efficiency: 905%
Max speed: 707 kmh — 433mph Default (Optional other speed: 35mph or 25mph,15mph)
Mechanical brake: Disk or V
Cable location: shaft end , LEFT
Cable length:160cm / 63″
Install: spacing of 100mm fork
Noise: < 60 db Surface: Black painted Driver: brushless controller MOSFET: 12 PCS With LCD: YES Rated Voltage: DC 48 Volts Min Voltage: DC 40 ± 05 V Rated power: 1000 Watts Casing material: aluminium Maximum Current: 26 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 Updated LCD , More Function: * Cruise * Forward & Rackward (Optional) * Regen brake * Kmh & mph (Optional) * Set Max speed ( 0 ~ 72 kmh / 45 mph ) * Pedal assist ( 1 - 5 ) * Temperature * Motor power * Timer * Battery gauge * I am looking to replace the rear wheel hub motor on my cargo bike (see picture) was on the bike when I bought it. I have trouble keeping the wheel true and recently have a lot of broken spokes and a cracked rim. It is also hard to pedal because of motor drag and I want to be able to ride it without the power on or if the battery went flat. I can’t do that now. I am interested to know a few things 1. What is the weight of the front wheel hub motor? 2. You can see my bike has the front wheel a much further distance from the handlebars.Can you supply this hub motor kit with longer wires - or extension wires with appropriate connectors - so the wires can be routed under the cargo area and up to handlebars? 3. Is the voltage programmable with your system? (My existing motor can be)(I have a big battery pack) 4. I have hydraulic disc brakes on my bike and want to be sure this is compatible with disc rotors A: 1. The net weight of this motor is 7.25kg 2. Yes. When you order on our site,just leave message: cable length, then we can make. 3. The voltage isn’t programmable. This 48v controller works with 48v or 52v battery. (from min 40v to max 60v) 4. There are six screw on left cover for install disk. The dia. is 44mm (between two screw holes)

leaf bike 26 inch 48V 1500W rear hub motor wheel kit

Posted by on March 15, 2025 No comments

Q: I am interested to buy a complete Rear 1500w hub motor wheel ( the latest model with upgraded phase wires, 0.35mm lamination etc).
The model model I think is LBM26481500RN and I would like to know the following before if buy:
– the no load rpm for 4T, 5T and 6T motor at 48v
– and the top speeds under load for 26 inch wheel.
I am looking to have a maximum 55 – 60kph (not less than 55 ) top speed under load but a bit more torque for off road riding.
Also for a electric bike motor with disc brake mount, cassette, temperature sensor and a rim that fits a 2.5 tire is the same price?

A: If not load, 4T 1500w 26 inch hub motor is about 72kmh (work at 48v)
If not load, 26 inch 1500w 5T is about 60kmh (work at 48v)
We can make cassette case motor with 2mm phase wire. But we still recommend standard version with thread screw with 2.5mm phase wire.
Also,standard version is easy to install than cassette case..
* With disc brake mount, cassette,temp,rim fit for 2.5 tire – The same price.
We recommend: with disc brake, standard version (No cassette version),temp,rim fit for 2.5 tire.

Q: can you please send me a more precise data (numbers) about the rpm @ 48V for each available wingdings available, like a performance table or similar?
I found on internet different available information for this motor, but their are not consistent, there are also the forums..and each data is different.
I was hopping that you can provide me more figures..
And also,I don’t understand why for the cassette hub the phase wires are 2mm while there are existing on the opposite side ?

A:Thank you so much for the clear explanations, I understood very well now what are the draw backs for each design.
Also, I was looking over the performance datasheet and I suppose that those parameters are for the 4 turn winding I suppose right?
So for the 5T the maximum rpm with be lower and torque a bit higher. Also the max efficiency point will be at a lower rpm.
Good, so if I want to place an order for a 5T 1500W 26 inch Rear hub motor kit wheel with the following requirements:
disc mount
threaded sprocket
temp sensor
135 mm drop out
26 inch Rim for 2.5 tire (23-25 mm wide rim)
12 gauge spokes

A: Yes. That 4 turn winding.
If 5T, the max rpm with be lower and torque a bit higher.
26 inch wheel, we recommend 5T
Standard rear 1500w 5T with the following requirements
* can install disk the left side of motor
* can install threaded sprocket on the right side of motor
* with temp
* fit for 135mm dropout
* We have 26 inch out.size 25mm or out.size 32mm wide rim (Our 32mm rim is fit for 26 inch)
Please click below sites.
I think 26 inch all black color rim is fit for your 2.5 tire.

about 1000w and 1500w electric hub motor

Posted by on March 15, 2025 No comments

I am part of a team what will be competing in an ECO marathon challenge. That means we will be building a vehicle that will compete with other teams. The most efficient vehicle will win the prize!

We are building a three wheeled car, driven with a hub motor used as mid-drive motor. I have been a member of the Endless-Sphere group for very long and knew that the Leaf 1500Watt hub motor is the best in therm of efficiency.

So my question is, is it possible to get the hub motor for a cheaper price (free shipping) in exchange for some stickers we will put on our vehicle? Let me know if you have any interest in sponsoring our build/team! If you have any questions feel free to email me back, I will get back at you as soon as possible!

Could you tell us what winding options are available for the 1000Watt electric bike motor (Item ID #LBM481KRNC) and the 1500Watt electric bike motor (Item ID #LBM481500RNC).
We are looking to find out what hub motor is the most efficient on a voltage of 48Volts.

So could you tell us the max RPM, per winding option (1000watt and 1500watt) at 48Volt?

We would like to compare each different electric bike motor(1000/1500watt and different winding options) in a simulator.
The simulator we are using to compare each hub motor is an online simulator

To simulate all the different electric bike motor options and windings we need some parameters from each motor 1000watt and the 1500watt. Is it possible to provide us these motor parameters, so we can run a simulation on the 1000watt motor with different windings and on the 1500watt with different windings?

What would be the max RPM of a hub motor with those options (20 inch 1000w cassette and disk brake)?
And what would be the turn count?
Thickness of laminations? Will it have the same efficiency as the 4Turn 1000watt motor?

fat electric bike motor

Posted by on March 15, 2025 No comments

With regards to this product 20 inch 48v 2000w rear hub motor beach snow fat tire bike conversion kit.Will my existing battery and brakes work?I have a 48V 14.5 AH battery and hydraulic brakes.
What about hills? Will it work for that too? Also will I be able to use a 52v electric bike battery on that hub motor controller?
Also my current bike, the display has buttons for me to turn on my headlight and tail light, would your system be compatible to turn on and off my headlight and tail lights?
Does that switch plug and play or do i have to splice into the lights and into the controller? I want to use the same battery.
Do you sell just the motor? Maybe I can just plug it into my existing harness and controller?
Also question peter, I heard geared hub motors have more torque off the line than direct drive gearless?

Your 48v 14.5ah battery can drive it work on flat road.
Also,you can use your hydraulic brakes.
If battery’ s current is 30amp or larger 50amp.. can uphill easier..

Work with your 52v battery.
This controller work with 48v battery (min 40v to max 60v) – 52v still 48v battery, just full charged 48v battery up to 52v or more.
Have to splice into lights and battery. Very easy.
Don’t into controller.
Sell just the hub motor is okay. But not sure if works with your controller.
Recommend order motor & controller and other bike parts together.

Now nearly all geared hubs are 250w,max 500w small power.. fit for Europe
We also have these motors.

1000w,2000w geared hub motors are be eliminated by the market.
* too much noise
* low efficiency
* easy to wear gears

Nearly all 1000w,1500W,2000w,3000w e-bike,e-motorcycle use brushless gearless hub motors.

sensorless brushless hub motor at low speeds

Posted by on March 13, 2025 No comments

Sensorless brushless hub motor at low speeds and easy low-frequency vibration. Vibration frequency and load and drive performance, generally considered the vibration frequency is half the frequency of the hub motor load off. By the sensorless brushless hub motor that works the low-frequency vibration determined by the normal operation of the machine is very negative. When working at low speed sensorless brushless hub motor, generally should be used to overcome the low-frequency vibration damping phenomena, such as the increase in the damper motor, or drive on the use of segmentation techniques. AC servo motor is running very smoothly, even at low speed vibration will not occur. AC servo system with a resonance suppression, can cover the lack of mechanical stiffness, and function within the system has a frequency analysis (FFT), can detect mechanical resonance point, easy system tuning.

29 inch electric hub motor kit have problems with the cassette

Posted by on March 13, 2025 No comments

I ordered the 48v 1500W electric bike kit, with cassette.
I have problems with the cassette, the cassette is wider than where the dropouts sit around the axle.
So the hub motor wheel with the cassette on is wider than 135mm.
My bike frame is 135mm, and the website said it would fit on a 135mm frame.
When the cassette is on the hub motor wheel and i put the electric bike motor wheel on the bike, the frame grinds against the cassette when I tighten the electric bike motor wheel.
I have made it work using spacers so it spins freely, but the wheel is offset to one side now and i think my frame is spread wider. It is an aluminium frame.
Also the website said max 7 speed gear, but the cassette is for a 9 speed gear, which is also mounted now, is it suppose to be able to take a 9 speed gear, or is that an accident?
Any advice on what to do?
Also, any advice on mounting the torque arms? My frame is aluminium.

Steel is okay.But Aluminium is not good to make it larger. We worry if make aluminium frame to larger will break frame.
We recommend use 7 speed or 6 speed or single speed..

You will receive below goods:
1x pcs of 29 inch 48v 1500w rear hub motor wheel (black spokes, cassette)
1x pcs of 48V bldc motor controller (New version LCD controller)
1x pcs of LCD (New version LCD-003)
1x set of twist throttle
1x set of brake levers
1x pcs of three button switches ( use to control cruise,reverse..)
1x set of pedal assit ( It’s fit for European,if you don’t use,ONLY use throttle is okay )
Some spare spokes with plugs

——————————————-
How to set max speed?
If you feel motor is too fast,please set it to be low speed.
* Press “sw/middle button” from LCD more than 2 seconds,then LCD will display.
* Press “up & down button” together more than 2 sconds until 72 is flashing ( 72 is kmh, if you hope works 20mph / 32kmh, press “down” to be 32)
* Press “sw/middle” button one time to save,then 29 is flashing.. (29 is wheel size. Don’t set)
* Press “sw/middle” button one time to save,then kmh or mph is flashing..
* Press “sw/middle” button one time to save,then press “sw/middle” button more than 2 seconds until be back.