Siemens EX Series AC Motor

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Q:Which price is higher, AC motor or direct current motor? Which one has a longer service life?
The DC motor, relying on power, motor rotation, heat production, but the effect is better. Therefore, when in use, according to the needs of choice.
Q:Are there 3 harmonics in the voltage of a three-phase alternator? Why?
If the generator is delta connected, there is no 3 harmonic in its no-load voltage;
Q:Why is Tesla's Model s electric vehicle using AC motor instead of the more popular frequency conversion DC motor?
The structure of DC motor is complex, the cost is relatively high, and later maintenance is troublesome. Larger motors require an external cooling fan. Can be very simple to realize the speed of the economy. Big torque and good mechanical characteristics. The AC motor has the advantages of simple structure, low cost and simple maintenance. You can't speed it yourself. In the past, the frequency conversion was not timely, and the DC motor was used in places requiring good speed control (machine tools, cranes, textiles, etc.). However, with the development of frequency conversion, the performance of vector frequency conversion + frequency conversion motor is close to that of DC motor.
Q:How to change AC motor to generator?
The motor can be changed, or diesel gasoline engine as power drive, and capacitor connected to the motor at the outlet of the can, the capacitor adopts non polarity capacitor voltage, then Y must be greater than or equal to 250V, the delta connection pressure is greater than or equal to 400V. conditions must have left the rotor when the rotor magnetic remanence, no. With 6V DC motor in the three-phase one electrically connected to a few minutes, the rotor will produce remanence. Its efficiency is very low, three-phase motor with 4 poles. The speed is 3000 rpm. The maximum is 75%. after the transformation can only be used as emergency power. Do not try, there is not much sense, but can be used as academic discussion. The basic will not be adopted, too much waste, and here is the capacitor capacity at the discussion
Q:Why are electric hair dryers divided into direct current motors and alternating current motors? What are their differences?
DC motor: fast speed, light weight, simple structure, easy to damage, big sound making
Q:Is permanent magnet synchronous motor AC servo motor?
The permanent magnet synchronous motor is not the coil or induction material on the rotor, but the permanent magnet. Special servo drives are used to control such motors
Q:Winding of single-phase AC motor?
Depending on the type of motor, the range motor is the same as you say. Asynchronous motors are not like this.
Q:Difference between energy consumption braking of DC motor and AC motor
When the motor is operated in an electric state, if the armature voltage U is suddenly dropped to zero, the armature is connected with an additional resistor R. The two ends of the armature are disconnected from the power grid and are quickly connected to an appropriate resistor. The motor is in the running state of the generator, converting the kinetic energy of the rotating part into electric energy and consuming the resistance. With the kinetic energy consumption, the speed decline, braking torque is also becoming smaller and smaller, so this brake method is still relatively high in speed, braking role is relatively large, with the decline in speed, braking effect also decreases.
Q:Isn't the starting winding symmetrical? If it's symmetrical, it's also an alternating pulsating magnetic field, how can you drive the rotor?
Because the magnetic field will not rotate (single phase winding and three-phase current phase difference of 120 DEG to produce a rotating magnetic field, so the starting winding), the working principle is in the starting winding current is generated through nearly 90 degrees of the magnetic field produced by a capacitor, the rotating magnetic field.
Q:Which good reputation is synchronous synchronous motor?
You can see Wuxi city base metal products factory is a 50KTYZ permanent magnet synchronous motor, permanent magnet synchronous motor 60KTYZ, 65KTYZ permanent magnet synchronous motor, permanent magnet synchronous motor 80KTYZ, stepper motor products such as professional production and processing company, products are widely used in various types of household electrical appliances, office automation, automatic control etc.. Wuxi city base metal products factory from ultra early start to now and in the future, we are committed to providing high-quality products and services for customers from incoming, manufacturing, shipping and other processes in strict control of product quality, the production of motor advanced manufacturing technology as the premise, with modern production and testing equipment for the protection. The pursuit of zero product defect rate of PPM, is committed to providing customers to create large value add motor pursuit, to achieve the terminal customer satisfaction as the core; add motor is building motor manufacturing enterprises and make unremitting efforts.

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