Q:Can ac motors be used to speed control?

If you don't have a low frequency field running, you can choose to ordinary asynchronous motor, if there is a low frequency operation that suggest you still choose frequency conversion motor, is mainly ordinary motor cooling fan is connected to the motor spindle, fan heat dissipating capacity of low frequency, then the heat dissipation of the motor can't guarantee. But the frequency conversion machine is the opposite, because the fan is controlled separately, it is forced wind cold. It doesn't matter even at low frequencies. I hope I can help you.

Q:What is the classification of ac motor?

According to the number of different ac power, and can be divided into two major categories of single-phase and three-phase ac motor, is currently the most widely used three-phase asynchronous motor, this is because the three-phase asynchronous motor has simple structure, low cost, strong and durable, convenient in operation and maintenance, etc. A single phase asynchronous motor is widely used in situations where there is no three-phase power supply and some small motors

Q:Does ac opportunity generate recoil voltage

The coil of a relay generates a magnetic field when plugged in, When the power is disconnected, the magnetic field gives the coil a reverse electromotive force.

Q:Question about the general motors?

Alternating current general motors with stator coils and rotors are series of exciting! Its commutation needs to change the head and tail of the stator winding and the direction of the rotor commutator! As long as the connection is set! The connection is a turning point! In other words, you're turning the dc backwards! If there is no other electronic control element inside it will not burn!

Q:What are the requirements for frequency conversion of ac asynchronous motors?

I don't see any need for the asynchronous motors.I hope my answer will help you

Q:What is the difference between alternating current motors and dc motors?

The same is true of their principle, which is the use of electromagnetic induction. Different is confidential by dc commutator to change the direction of current. To get a torque, principle, I would say, junior high school. Ac motor is to pass through it into the alternating current to produce a rotating magnetic field in the motor, and then is the law of electromagnetic induction. I wrote it myself, hoping to help the owner.

Q:What is the ac motor made up of?

Car electric has two key components, one is a generator, and the car is powered by the car. The other is the motivation to start the car. The motor has a magnetic field and the armature and rectifying element, but the former is to convert mechanical energy into electrical energy, which converts electrical energy into mechanical energy, and the structure of the two is have very big difference. Previous auto generator is a dc generator, commutator rectifying, since the 1970 s have been phased out, now auto generator is mostly alternator, with semiconductor rectifier. It has the advantages of small size, large power, long life, low failure and low speed charging performance.

Q:Any 220V ac motor can be reversed?

The four wires can be reversed by changing the direction of the starting winding. It is possible to distinguish between resistors and resistors, and generally start winding resistance greater than the main winding. The capacitance is in no direction, so there is no change in the direction of the motor in the direction of the capacitor.

Q:The structure of the ac motor

Ac motor is a machine that transforms electrical energy into mechanical energy. The ac motor is composed of a stator iron core, wire wrap winding, stand, and other structures that are fixed in these parts. The rotor by

Q:Who made the world's first ac motor?

It also said that the direct current was "discovered" by Edison. In fact is the discoverer of the dc volts, he invented the world's first device that can produce continuous dc - voltaic pile, dc motor is developed by Germany's Siemens, the earliest. The same is true of alternating current, which was invented long before tesla. Invented the alternator is a French engineer A.H. pique west (baidu "A.M. pique west"), he was in Paris in 1832 for a permanent magnet type rotary alternator. A year later, he installed commutator on the generator, turning alternating current into direct current.