Label: frequency conversion motor drive
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At present, people's living standards are getting higher and higher, and the performance of various products is becoming more and more critical. When it comes to washing machines, the most noticeable thing is the frequency converter of the washing machine. However, do you know how the washing machine is frequency-converted? Today, Xiaobian will briefly introduce you to several common variable frequency motors and frequency conversion principles on the market.
DD inverter motor
DD frequency conversion mainly means that the direct drive motor does not need to pass the transmission device (such as transmission belt, etc.) when driving the load. That is, the belt connection between the washing machine and the driving motor is not used. The main advantage of the direct drive motor is to avoid the use of transmission equipment such as transmission belts, which are precisely the parts with high failure rate in the system. Therefore, systems using direct drive motors should technically have a lower failure rate and reduce noise. There are brands such as LG and Sanyo that use this type of inverter motor.
SD plus core variable frequency motor
"SD core frequency conversion" technology has fundamentally improved the motor drive system. By eliminating the carbon brush on the traditional motor, the noise generated by the friction between the carbon brush and the converter during high-speed operation of the motor is eliminated, and the noise can be controlled at 50 decibels. the following. It also reduces the electromagnetic radiation of the motor by 30%. Compared with ordinary washing machines, it gives users a greener and healthier laundry experience. This kind of frequency conversion technology is widely used in Haier's washing machine. Haier and the United World's home appliance giant Fisher & Paykel jointly developed and upgraded the frequency.
BLDC brushless inverter motor
BLDC brushless DC motor, the machine is a kind of synchronous motor. The electronic commutator replaces the mechanical commutator, which not only has the characteristics of good speed regulation of the DC motor, but also has the advantages of simple structure, no commutating spark, reliable operation, easy maintenance and no noise in operation. The magnetic field generated by the stator has the same frequency as the magnetic field generated by the rotor, and the "difference frequency" problem common in induction motors is not encountered. This type of motor is widely used in Bosch's outdoor all-round series of washing machines to improve power performance and reduce noise.
Conclusion: There are many types of inverter technology for motors, but all of them are designed to improve performance, reduce energy consumption, reduce noise, and provide us with a greener laundry space.
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