It is very important to improve the quality of electrolytic capacitor

Inverter power supply cannot do without aluminum electrolytic capacitor. The quality of electrolytic capacitor directly affects the stability and reliability of inverter power supply. If you want to improve the reliability of inverter power supply, the quality of electrolytic capacitor is very important. Lets take a look at the explanation of experts.    in the design of power supply, efficiency and reliability are the first factors considered by designers, especially in the design of inverter power supply. The improvement of the reliability of inverter power supply is a relatively difficult task for novices

Inverter power supply cannot do without aluminum electrolytic capacitor. The quality of electrolytic capacitor directly affects the stability and reliability of inverter power supply. If you want to improve the reliability of inverter power supply, the quality of electrolytic capacitor is very important. Lets take a look at the explanation of experts.
   in the design of power supply, efficiency and reliability are the first factors considered by designers, especially in the design of inverter power supply. The improvement of the reliability of inverter power supply is a headache for novices. Although there are materials for reference, only some methods are given, but some skills or principles are not explained. This article from the experience of technical experts, in addition to summing up the inverter power supply reliability to enhance some of the skills and principles to explain.
   starting from the electrolytic capacitor of the input circuit, the DC input current of the inverter is usually very large. The maximum input current of 12V1000W inverter can be more than 120a. At this time, the choice of electrolytic capacitor becomes very important. If it is not selected properly, it will cause the breakdown of electrolytic capacitor.
   this does not mean that a better capacitor can be selected. At present, there are few high-frequency electrolytic capacitors with low equivalent series resistance and inductance, and they are expensive. Therefore, from the practical point of view, at present, we mainly rely on the common electrolytic capacitor multiple parallel method to reduce the temperature rise of the capacitor, and pay attention to the air duct heat dissipation design to reduce the temperature in time. Of course, it is necessary to choose a better brand and quality of aluminum electrolytic capacitor from "ordinary".
(tip: core temperature is the most important parameter in aluminum electrolytic capacitor. The lower the core temperature is, the longer the service life of electrolytic capacitor is. When choosing the electrolytic capacitor manufacturer, be sure to test and compare the core temperature of electrolytic capacitor.)
   lets talk about the adaptability to different load characteristics. This is mainly divided into two aspects. One is the power margin of the inverter itself, the maximum allowable on load starting output current and over-current protection measures. The other is the adaptability to different characteristics such as inductive, capacitive, negative resistance and so on.
   generally, if these problems are not handled properly in technology, the products are prone to various problems in use.
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   besides grid connection, the self-protection of inverter also affects the reliability of inverter. This includes current limiting protection mode, thermal shutdown protection, user operation exception protection, load exception protection, startup protection and so on.
   the parameter setting of the original device will affect the reliability of the product as well as the type selection. But for MOS transistor and ultra fast rectifier diode, the influence of different packaging forms on reliability is sometimes very obvious, which needs to be treated carefully.
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