Tiếng Việt
Currently, equipment and machinery such as refrigerators, air conditioners, etc. have applied inverter technology. This saves a large amount of energy when operating machinery, but not everyone knows about this technology. So what is inverter technology? How does the principle work?
The following article will help answer your questions.
1 – What is inverter technology?
We can see that inverter technology is the technology that is often mentioned when we are shopping for equipment such as refrigerators, air conditioners, etc. Helps control the capacity of the device so it saves energy. power, avoiding unnecessary energy waste.
According to Dr. Tran Van Thinh – Electrical Institute – Hanoi University of Science and Technology, the inverter is a specialized device to control motor speed. This is a technology that has been widely applied in the world. In addition to controlling the motor speed, it also has the function of soft dynamic, braking, reversing, intelligent control, … Especially the electronic circuit boards of inverter technology are mainly produced and developed by Japan.
2 – The principle of operation of the inverter
The principle of operation of the inverter is quite simple, which is to turn a 1-phase or 3-phase AC power source into a DC power source. This adjustment is done by 2 bridge rectifiers diode and capacitor.
Therefore, the inverter power factor has a value independent of the load and the factor is at least 0.96. Inverter technology also helps the DC voltage to be inverted into a symmetrical 3-phase AC voltage. This is done using an isolated gate bipolar transistor (IGBT) system using the pulse width mode (PWM) method.
Today, with advanced technology, the motor has reduced noise and toornt on the motor’s iron core by making the pulse switching frequency up to the ultrasonic frequency range.
3 – How does inverter technology help save electricity?
The inverters have very high power conversion efficiency, the reason is that the inverter uses power semiconductor components manufactured according to modern technology. As a result, the energy consumed by the system is only approximately the required energy of the system.
Based on the actual data, it has been calculated that, the actual costs of a 100KW primary motor, the payback period for an inverter is from 3 to 6 months. Today, many enterprises in Vietnam have applied inverter technology to their machinery systems and have saved about 44% of electricity.
4 – Some applications of inverter technology in life
4.1 – Air conditioner
With today’s high technology, all air conditioners have used inverter technology (inverter technology). When applying this technology, the air conditioner not only saves power consumption but also helps the machine operate smoothly, increase durability and help maintain a stable cold.
4.2 – Refrigerator
The application of inverter technology will help the refrigerator control the temperature between the freezer and the refrigerator better. Food will also stay fresher and keep longer. With inverter-applied refrigerators, it will save about 30-50% of electricity compared to conventional refrigerators.
4.3 – Washing machine
Inverter technology will help the washing machine operate more smoothly, stably and economically. In particular, it also helps to increase washing performance, helping to clean clothes better but without damaging the fabric.
4.4 – Induction cooker
Induction hobs applying inverter technology will operate with a frequency range of 40 – 60khz, helping the stove to operate smoothly and at a stable temperature. So even if the stove is operated with low capacity, it still ensures that food is warmed with many heat levels and at the same time helps to save a significant amount of energy.
