Motor DC AC Filtering 20

A 24V AC motor doesn't seem to be easy to buy. The electricity coming out of the transformer is generally relatively regular, and there is basically no need to filter it. The harmonic pollution of the current mains is not very large. If it is not a precision instrument, the incoming filter is basically not needed.

24V AC TO DC requires rectifier filtering and re-regulation.

Addendum: If you're sure your motor is 2-phase AC, then you really don't need it.

Remote control remote estimation power consumption is not large, from the transformer, connect a rectifier bridge, and then connect a 47uf electrolytic capacitor in parallel between the positive and negative poles, pay attention to the polarity, flat wave, and then connect a 100pf capacitor in parallel, filter out high-frequency interference to the input terminal of 7824, 7824 ground to the negative pole, so good, the voltage between the output pin of 7824 and the negative pole is 24V, the maximum current that can be provided, it should be no problem to supply power to the remote control.

It must be filtered, AC needs to consider the high-frequency components, DC needs to filter the low-frequency and high-frequency components, and then add a large capacitor to improve the load capacity of the circuit, first estimate the power you need, and then calculate the power of the transformer

The output of the 24V transformer is 24V alternating current, and the main condition for connecting the 24V AC motor is that the rated output power of the transformer is not less than the rated power of the motor, and the power can be used directly if the transformer power is sufficient.

The power supply required by the wireless remote control is direct current, and the AC power output of the transformer cannot be directly used, and the 24V alternating current output by the transformer can only be used by the wireless remote control after rectification, filtering, and voltage stabilization.

The transformer 24V for the 24V AC motor does not need to be rectified and filtered, and it is directly applied.

When connected to a 24V DC wireless remote control, it needs to be rectified and filtered, and the DC voltage after rectification filtering:

24 Therefore, after rectifying the filter, the 7824 three-terminal regulator element is required to supply the wireless remote control.

There is a marine motor with a rectifier copper head at one end of the rotor and two slip ring copper heads at the other end. The motor inputs 12V DC power at the DC copper head, and the motor rotates to send out 220V AC power at the slip ring at the other end. The power is about 500W.

This kind of motor should be called an inverter motor, and the principle is that the DC motor and generator are combined into one, which is quite convenient.

However, due to the maturity of transistor inverter technology, this kind of motor is rarely available.

Asynchronous motor! Ordinary motors are AC power sources.

As long as the current connected to the motor is DC, it is a DC motor, and the current connected to the motor is AC, it is an AC motor.

A motor that uses direct current is a direct current motor.

A motor that uses alternating current is an alternating current motor.

DC is the electricity in the battery or battery, which is safe electricity, and AC is the dangerous electricity of 220 or dt0 volts.

There are two types: DC and AC. There are also two kinds of catenary: DC and AC. In most cases, the catenary is supplied with 200,000 volts of alternating current, and the locomotive receives and converts it into direct current drive.

At present, on the electrified railway, the catenary power supply is a single-phase 25kV, and the traction motors of the (high-speed rail) EMU and the Harmony locomotive (HXD1, HXD2, HXD3) are all three-phase AC motors, and the driving mode is "single-phase AC (step-down, rectification) DC (inverter) three-phase AC", and the actual working voltage of the motor is changed at any time with the load state.

In addition, some of the "Shaoshan" locomotives in operation (SS7, SS8, SS9, etc.) use DC motor traction.

The generator itself may be AC, with a diode rectifier, and from the outside it is DC.

AC motors, I just happened to be writing this**. Electric vehicles can carry out stepless speed regulation, and stepless speed regulation is to change the speed of the motor by changing the frequency of input alternating current, which is mentioned in "Electrical Engineering", the speed n=(1-s)n0=(1-s)*60f p, where s is the slip rate, that is, the speed of the alternating current n0 and the difference between the motor speed n The speed of the alternating current is the number of pole pairs, which is the parameter of the motor, and f is the frequency of the input current. And you can find electric cars with three-phase asynchronous motors.

Direct current. The battery of an electric car is DC. Of course, its motor is also DC inverter.

Direct current!

Thank you for your question.

Electric vehicles use alternating current. However, very large vehicles such as police offices use direct current.

Both AC motors and DC motors are used.

Before the 80s, the vast majority of mine hoists use the AC speed regulation system of wound asynchronous motor rotor loop string resistance, a few use generator motor DC speed regulation system, and most of the hoists in large mines put into production in the 90s use the thyristor DC reversible speed regulation system of magnetic field commutation.

Both kinds of motors are used AC or DC, the key is the use, if it is used in the AC circuit is the AC motor, if it is used in the DC circuit is the DC motor.

The stepper motor is DC, and the synchronous motor is AC!

China's household electricity is 220V alternating current, the frequency is 50Hz, the household motor is basically 220V AC motor, small low-voltage DC motor must have a variable voltage rectifier device to use.