ABB High Voltage AC Motor

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Q:Why AC motor speed control system will replace DC motor speed regulation system?
At present has been put forward and the practical application of the PWM control scheme is more than a dozen kinds, about PWM control technology in the power of many famous international conferences, such as PESC, IECON, EPE annual meeting has formed a special. Especially the microprocessor used in PWM technology and the digital pattern, is constantly changing, from the initial pursuit of sinusoidal voltage waveform, sine to current waveforms, then to sinusoidal flux; from the optimal efficiency, minimum torque ripple, to eliminate noise, PWM control technology development has experienced a continuous innovation and the continuous improvement process. So far, new proposals have been put forward, which further proves that the research of this technology is in the ascendant.
Q:What's the difference between an AC motor and a direct current motor?
The difference between AC motor with DC motor is simple and there is no difference between the brush DC motor, AC motor and the brush is no, one more than the DC inverter, DC motor brush, low noise, energy saving. The AC motor because of the frequency converter noise is relatively large, power consumption is also slightly larger. In short, each has its own advantages, according to their own use of ways to solve which to use!
Q:What is the reason that the single phase AC motor is turned on and off?
Check the switch first, is there any bad contact?. After the problem of the switch is removed, the power is turned on, and whether the cold state can run normally every time. If there is a phenomenon that the cold condition can not work properly, the internal circuit or winding is not working.A single-phase alternating current motor is a rotating electromagnetic machine used to realize the conversion of electrical energy and mechanical energy.
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.
Q:How do I change the speed of the motor?
The speed and frequency of motor poles, polar slip on changing the motor starting capacitor, the direction of rotation of the motor can be changed by a pair of pole motor each phase is about more than 2800 rpm, 4 pole motor is about more than 1400 rpm, 6 pole is about more than 960,.
Q:How is the rated current of three-phase AC motor calculated?
I=S/1.73UX0.8 is: apparent power divided by the square root of 3, 1.73, and then divided by the voltage X power factor 0.8
Q:How to judge the quality of three-phase AC motor?
1, appearance inspection2, respectively measuring U1U2, V1V2, W1W2 resistance, three-phase resistance value should be equal, three-phase maximum difference should not exceed 2% of the average value3, if you use a multimeter, it's almost equal4. Monitor the current and motor temperature after idle running
Q:What is brushless motor, no and brush what is the difference?
The difference between a brush motor and a brushless motor is whether it is equipped with a conventional brush commutator. The commutation of the brush DC motor is always achieved by touching the graphite brush with the ring commutator mounted on the rotor.The brushless motor will feedback the rotor position back to the control circuit through the Holzer sensor, so that it can learn the accurate time of the motor phase commutation. Most brushless motor manufacturers produce motors with three Holzer effect positioning sensors. Since brushless motor has no brush, it has no relevant interface, so it is cleaner and less noisy. In fact, it needs no maintenance and longer service life.
Q:100W AC motor or DC motor good?
The alternator is concerned, it can realize the direct energy feedback to the grid (but must ensure 4 conditions: the same voltage amplitude, phase and phase sequence of the same, the same frequency); but the DC generator power is required to process the alternating current into the inverter (DC said rectifier, the DC the process that converts the AC inverter), to feedback to the grid. So it also needs to increase the power of the inverter.
Q:What's the difference between a variable frequency motor and a servo motor?
Then it is servo motor, variable frequency motor and the main difference with the encoder, and then transmitted to the servo motor drive, and then using the control theory, such as gain, adjust time, simply say a servo motor is a closed-loop control system, and quick start, stop, load capacity a variable frequency motor, with these characteristics, also makes the speed, torque, third position control method for high requirement application. 1, servo motor and inverter and working principle of AC motor is basically the same, belong to the AC-DC-AC voltage type motor drive, but the technical requirements of big differences, so there are great differences in the aspects of motor and driver design.

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