Calculation of motor magnetic field force

1.

Motor torque:

the calculation formula is:

t = 9549 × P ÷ The unit of n is n & 8226; M (nm)

where: P rated power of motor (output power), kW

n rated speed of motor, R / min

specific calculation of speed n:

when the rotating magnetic field has

extended data:

generally speaking, the torque of motor with mechanical rotation is the torque of motor

Note: the torque of the motor is directly proportional to the strength of the rotating magnetic field, the current in the rotor cage bar, and the square of the power supply voltage, so the torque is determined by the factors of current and voltage

2. I've been doing it for months. It's not like that at all

3. According to the original design of the motor, it is better to try to change the number of coil turns, not only the magnetic field force will change, but also the corresponding magnetic noise, heating, slot full rate will change

4. Magnetic inction (flux density) B = 45 * U / (n * s) (t Tesla)
u rated voltage V
n coil turns
s core cross section area cm ^ 2

5. The force of magnetic field on current refers to
Motor
(left-hand rule)
the principle of generator is to overcome ampere force and convert other forms of energy into electric energy

6. The magnetic field force of the fixed magnet will be consumed slowly
whether it is the motor or the usual strip-shaped hoof magnet
so it is necessary to magnetize the magnet regularly with the electromagnet

7. Is motor coil stator or rotor? In fact, both of them are forced, because the stator coil is fixed, so the force is reflected on the rotor. When the three-phase coil of the motor stator is connected to the three-phase power supply, a rotating magnetic field is formed on the stator, and its speed is equal to the power frequency, which is called "synchronous speed". The force of rotor bar depends on the difference between rotor speed and power frequency, which is called "slip", and its percentage is called "slip". When the rotor does not rotate at the moment of starting, the slip is equal to 100%, and the force on the rotor bar is the largest. When the speed increases, the slip decreases and the force decreases. When the speed is close to "synchronous speed", the rotor current will be close to zero, and the rotor bar will not be forced. So asynchronous motor can never reach synchronous speed. The greater the slip, the greater the force on the rotor bar.

8. A magnetic field is a substance around a magnet or current. This material can act as a force on the magnetic pole or current placed in it
magnetic force: the force exerted by a magnetic pole or current in a magnetic field
electric field: a kind of special material around the charge, which is characterized by its ability to proce force on the charge placed in it
Motor: after current is applied, the current moves under the action of magnetic field force. The magnetic field is proced by the magnetic pole in the motor.

9. If there is a problem, only increasing the magnetic field intensity of the stator will change the internal properties of the motor, just like increasing the filament resistance of the light bulb, the proportional relationship between voltage and current will change