Q:Is the synchronous motor not communicating? Why do you say that brushless dc is a type of synchronous motor? Exclude o

Brushless dc motor is not a smooth direct current, but pulse square wave. Like synchronous motors, speed is associated with frequency of square waves.

Q:What is the speed of the general motors

There are many different speeds of the motor, the synchronous motor is n = 60f/p, and the asynchronous motor can be changed at the same speed, which is related to the synchronous speed

Q:What is the classification of ac motor?

The three-phase asynchronous motor is the most widely used in the two kinds of rat cage and winding type according to the different rotor structure.

Q:What is the normal current of the three-phase motor of 3KW

Normal ac motor, including FM motor, is not allowed to be plugged. By the external characteristic curve of ac motor, the ac motor will generate a "subversive current" burning machine when plugging. At this time the converter, if the vector is controlled, the motor is plugged and the torque current is not controllable. I've done this experiment. If the speed of more than 5 hz, can control the torque current (size can be smooth adjustment), and, using the encoder feedback is better than not using encoder feedback.

Q:Juicer, dc motor or ac induction machine?

It is believed that the most simple and easy to maintain and the fault rate is much lower.

Q:What is the effect of the ac motor on the connection of direct current

In the home soybean milk machine circuit has a rectifier circuit, the motor is not a pure ac motor. The 48-v inverter means the conversion of 48V direct current to 220V ac. It's just that your inverter is driven by the emotional load, which is more than double the nominal power. Because domestic soybean milk machine work time is very short (beating), generally within 3 minutes, so the motor temperature rise is higher, can give it a try 2 48 v battery series up to 96 v try, however, for the first time must be careful have a look at the rise of temperature of the motor.

Q:What is the difference between the three-phase ac motor and the second phase

Three-phase electricity is usually 380. There are four lines, three of which are wire, and one is zero; 380 volts is used as an industrial power; The second phase is 220 volts, and there are two lines, one of which is a fire line, and one is a zero line.

Q:How does ac servo motor change direction?

The private subdivision simulates input, and pulse input, the input terminals of the simulated input are negative 0 - - 10 volts (reverse) and positive 0 - -10 volt (positive pass). Pulse input, in addition to pulse, and direction control.

Q:Current ac motor has completely replaced dc motor

Ac permanent magnet synchronous speed adjustment is achieved by changing the frequency, requiring the frequency converter. Dc motors do not need other equipment to help speed the adjustment, but their own structure is complex and manufacturing costs are high. Before large power controllable thyristor is used in large quantities, dc motor is used for most speed adjustment.

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

In 1867, the Belgian character ram was made into an improved alternator. Scientists in 1886, the Croatian American origin tesla made two phase winding type ac asynchronous motor model, and in 1888 and developed the principle of the tesla coil, and in 1891 made the tesla coil's patent, which laid a foundation for alternating current (ac) of the remote transmission. It can be said that Edison and tesla, the former is not the inventor of the direct current (dc), the latter is not the inventor of the alternating current (ac), the later this misconception is that from the current war at the end of the 19th century, because two people a stick to dc, another promote communication, and let people think they are dc and ac inventor (baidu encyclopedia "tesla" entry is written).