It doesn’t work because the electrical energy produced by the generator is always less than the mechanical energy put into the generator by the shaft and the mechanical energy output to the motor is always less than the electrical energy coming in.
What is the best motor to use as a generator?
The DC motor is best suited for a generator. It’ll produce current, even if the speed of the rotation is somewhat less. When you use a single phase motor, you’ll need to rotate it at a speed higher than the motors synchronous speed to generate energy.
Can BLDC hub motor be used as a generator?
Permanent magnet BLDC motors can be used as generators. There is a type of brushless motor called a Reluctance Motor, which has soft-iron core, so will generate nominally zero voltage when spun.
What does pedelec stand for?
pedal electric cycle
The word Pedelec (an abbreviation of pedal electric cycle) was created in 1999 to differentiate between bicycles with automatic pedal support and those with a drive powered by a gas handle – meaning e-bikes.
Are ebike hub motors AC or DC?
Fundamentally speaking, electric motors translate electrical energy into mechanical energy. E-bikes use brushless DC motors, or BLDC motors, meaning they don’t use brushes to alternate the direction of current flowing to the motor, as older electric motors did.
Can you charge an ebike with a generator?
You can charge an electric bike with a generator. However, the generator must supply the same watts that your e-bike battery needs to charge fully. To find this out, you’ll have to know the wattage of the generator and how much power your bike battery needs to be fully charged.
Can you turn a brushless motor into a generator?
Both brushed and brushless DC motors can be operated as generators. However, there are some important points to consider when designing the drive.
How does a pedelec work?
Pedelec systems either use a torque sensor or a cadence sensor. A torque sensor reacts to how hard you pedal, and adjusts accordingly. A cadence sensor simply reacts to whether or not you are pedaling. Once you start pedaling, there is a two second delay, and then the motor starts up.
Who invented the pedelec electric bike?
In 1989, Michael Kutter, founder of Dolphin E-bikes, designed and produced the first pedelec prototype. The first market-ready models of this kind were available in 1992 from the Swiss company Velocity under the name Dolphin.
What are pedelecs and how do they work?
Pedelecs include an electronic controller which cuts power to the motor when the rider is not pedalling or when a certain speed – usually 25 km/h (16 mph) or 32 km/h (20 mph) – is reached. Pedelecs are useful for people who ride in hilly areas or in strong headwinds.
Are e-bikes in Germany really pedelecs?
About 95% of all e-bikes in Germany are in fact pedelecs. ADAC, the German (auto)motive club has tested a large number of pedelecs in 2013, where about 70% of the pedelecs failed the test with a score lower than reasonable due to unsatisfactory safety and durability.
How to choose the right motor for your generator?
In order to fulfill the torque requirements, you might need a motor with a much higher power rating than the generated power; in particular if the generator speed is rather low compared to typical motor speeds. The amount of torque on the generator defines the size and type of the motor-generator.
