Is the “no capacitance†of the LED lighting market feasible?
It is understood that the current capacitors in the power supply mainly have functions such as bypass, decoupling, filtering and energy storage. Among the many functions, the most important function is to maintain a stable voltage, which plays an irreplaceable role in the stable operation of the power supply for a long period of time.
“In simple terms, a capacitor is like a 'tank'. It does not cause a change in the amount of water due to the addition or evaporation of a few drops of water. It can convert voltage fluctuations into current fluctuations. The higher the voltage frequency, the higher the peak current. Liu Yaoping, vice president of Maoshuo Power Technology Co., Ltd., said that once the capacitor is removed, the power supply will not be able to achieve the above functions, so voltage fluctuations will become a "life gate" that is difficult to overcome after power-off.
At the same time, based on the de-capacitor products generated by the de-energization scheme, most of the products are still unable to obtain the passport of the international market due to the lack of appropriate safety regulations.
"Because, if there is a lack of capacitance in the components, then it will inevitably cause a certain degree of pollution to the power grid, and will also be accompanied by the possibility of generating harmonics." Chen Zhenghua, general manager of Fujian Yunxing Electronics Co., Ltd. said that although currently domestically There are no clear indicative requirements for grid pollution and harmonic hazards, but once such products touch the European and American markets with high environmental requirements, they will lose the possibility of circulation.
Therefore, in general, if it is necessary to remove the capacitor, the manufacturer must compensate for the lack of function of the scheme by other means. But this will invisibly increase the cost of product development.
“After removing the capacitor, we have to take some other methods, such as adding an AC or DC contactor, instead of the capacitor. However, the circuit structure will be more complicated and the cost will be higher.†Shenzhen Eurolink Electronics Zou Chengming, director of R&D of the company, said that unless there are some requirements for stroboscopic and ripple control, such as some indoor LED power supplies below 60W, the cost does not need to be increased, but in some occasions where there are specific requirements for the quality of the light source. For example, in the field of high-power outdoor road lighting, there is an inevitable need to increase costs.
But at the same time, there are still good voices in the industry. Since the beginning of this year, the enterprises that have launched the de-energization scheme on the market earlier have gradually found ways to solve such problems due to the rapid improvement of product technology.
“We launched a third-generation de-energized product this year. When its voltage rises, the chip efficiency will not decrease, and it will be able to maintain a constant power.†General Manager of Shenzhen Shengpan Green Integration Co., Ltd. Heng said that before the de-energized products in the industry, when the voltage rises, the chip efficiency will gradually decrease, resulting in an increase in overall power. However, the de-energized product that the integrated disc is integrated with, the applied voltage can be consistent regardless of the upward or downward voltage, so this will solve the long-standing "no-capacitance" that has long been plagued by the industry. problem.
“In simple terms, a capacitor is like a 'tank'. It does not cause a change in the amount of water due to the addition or evaporation of a few drops of water. It can convert voltage fluctuations into current fluctuations. The higher the voltage frequency, the higher the peak current. Liu Yaoping, vice president of Maoshuo Power Technology Co., Ltd., said that once the capacitor is removed, the power supply will not be able to achieve the above functions, so voltage fluctuations will become a "life gate" that is difficult to overcome after power-off.
At the same time, based on the de-capacitor products generated by the de-energization scheme, most of the products are still unable to obtain the passport of the international market due to the lack of appropriate safety regulations.
"Because, if there is a lack of capacitance in the components, then it will inevitably cause a certain degree of pollution to the power grid, and will also be accompanied by the possibility of generating harmonics." Chen Zhenghua, general manager of Fujian Yunxing Electronics Co., Ltd. said that although currently domestically There are no clear indicative requirements for grid pollution and harmonic hazards, but once such products touch the European and American markets with high environmental requirements, they will lose the possibility of circulation.
Therefore, in general, if it is necessary to remove the capacitor, the manufacturer must compensate for the lack of function of the scheme by other means. But this will invisibly increase the cost of product development.
“After removing the capacitor, we have to take some other methods, such as adding an AC or DC contactor, instead of the capacitor. However, the circuit structure will be more complicated and the cost will be higher.†Shenzhen Eurolink Electronics Zou Chengming, director of R&D of the company, said that unless there are some requirements for stroboscopic and ripple control, such as some indoor LED power supplies below 60W, the cost does not need to be increased, but in some occasions where there are specific requirements for the quality of the light source. For example, in the field of high-power outdoor road lighting, there is an inevitable need to increase costs.
But at the same time, there are still good voices in the industry. Since the beginning of this year, the enterprises that have launched the de-energization scheme on the market earlier have gradually found ways to solve such problems due to the rapid improvement of product technology.
“We launched a third-generation de-energized product this year. When its voltage rises, the chip efficiency will not decrease, and it will be able to maintain a constant power.†General Manager of Shenzhen Shengpan Green Integration Co., Ltd. Heng said that before the de-energized products in the industry, when the voltage rises, the chip efficiency will gradually decrease, resulting in an increase in overall power. However, the de-energized product that the integrated disc is integrated with, the applied voltage can be consistent regardless of the upward or downward voltage, so this will solve the long-standing "no-capacitance" that has long been plagued by the industry. problem.
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