三瑩鋁電解電容在電子行業的應用越來越廣泛，其中鋁電解電容的紋波電流對其特性有著重要的作用。那么什么是電解電容的紋波電流呢？紋波電流又有哪些特性？在日常的使用中該如何正確的維護呢？讓我們帶著這些疑問來看下面的文章。
The application of Sanying aluminum electrolytic capacitors in the electronic industry is becoming increasingly widespread, and the ripple current of aluminum electrolytic capacitors plays an important role in their characteristics. So what is the ripple current of an electrolytic capacitor? What are the characteristics of ripple current? How to maintain it correctly in daily use? Let's take a look at the following article with these questions.
1、鋁電解電容紋波電流因素
Ripple current factor of aluminum electrolytic capacitors
當交流電受到脈動電壓或紋波電壓的影響流經設備時，使用rms值表示紋波電流。最大允許紋波電流取決于環境溫度、電容器表面積(例如散熱區域)、損耗角正切tanδ(或者ESR)以及交流頻率。
When alternating current flows through the device under the influence of pulsating or ripple voltage, the RMS value is used to represent the ripple current. The maximum allowable ripple current depends on the ambient temperature, capacitor surface area (such as heat dissipation area), and loss angle tangent tan δ (or ESR) and communication frequency.
由于熱應力對于鋁電解電容器壽命有決定性作用，由紋波電流產生的熱量就是影響使用壽命的重要因數。
Due to the decisive effect of thermal stress on the service life of aluminum electrolytic capacitors, the heat generated by ripple current is an important factor affecting the service life.
這些熱量因數暗示，在特定環境下，必須選用比常規條件耐壓更優及電容更高的電解電容器來對應不同應用。
These heat factors imply that in specific environments, electrolytic capacitors with better withstand voltage and higher capacitance than conventional conditions must be selected to correspond to different applications.
2、紋波電流的頻率特性
Frequency characteristics of ripple current
鋁電解電容的損耗角正切(與ESR有關)隨施加電壓的頻率不同而不同。因此，紋波電流也依賴于頻率。在單獨的規格書中，電容器的紋波電流能力通常是在100或者120Hz條件下，或者在某些個例中為10或者10kHZ。其他工作頻率下的轉化因數以圖表的形式給出。
The loss tangent of aluminum electrolytic capacitors (related to ESR) varies with the frequency of applied voltage. Therefore, the ripple current also depends on frequency. In separate specifications, the ripple current capacity of capacitors is usually at 100 or 120Hz, or in some cases at 10 or 10kHz. The conversion factors at other operating frequencies are presented in the form of charts.
3、紋波電流的溫度特性
Temperature characteristics of ripple current
針對每種電容器型號的上限類別溫度，相應規格書明確了最大允許紋波電流。針對多數類別溫度超過85℃的型號，規格書還給出了85℃時的紋波電流以做比較。
The corresponding specifications specify the maximum allowable ripple current for the upper limit category temperature of each capacitor model. For most types of models with temperatures exceeding 85 ℃, the specification also provides the ripple current at 85 ℃ for comparison.
在每種電容器的規格書中，還列出了其他環境溫度以及紋波電流條件下持續工作的限值表。
In the specifications of each type of capacitor, a limit table for continuous operation under other environmental temperature and ripple current conditions is also listed.
4、鋁電解電容的使用維護
Use and maintenance of aluminum electrolytic capacitors
鋁電解電容器維護最重要的幾點：安全要求和措施。有內部熱量設備內的安裝。過壓損壞，火災。并聯和串聯電容器電路。
The most important points for maintaining aluminum electrolytic capacitors are safety requirements and measures. Installation within internal heat equipment. Overpressure damage, fire. Parallel and series capacitor circuits.
對工業應用設備用電解電容器應進行周其性檢查。在檢查前，要確保關閉電源并仔細對電容放電。要檢查電容器，在使用電壓——歐姆表測量時要確保電容極性正確，另外，切勿在電解電容端子上施加任何機械應力，周期性檢查要包括以下項目：
Electrolytic capacitors used in industrial application equipment should undergo a physical inspection. Before checking, make sure to turn off the power and carefully discharge the capacitor. To check the capacitor, ensure that the polarity of the capacitor is correct when measuring with a voltage ohmmeter. Additionally, do not apply any mechanical stress to the terminals of the electrolytic capacitor. Periodic checks should include the following items:
嚴重的外覺破損：是否彎曲。電解液是否泄漏等。
Severe external damage: whether it is bent. Check for electrolyte leakage, etc.
電氣參數：漏電流、電容、tanδ及產品系列或產品規格中規定的其它特性。
Electrical parameters: leakage current, capacitance, tan δ And other characteristics specified in the product series or product specifications.
如果發現存在上述任何一種問題，要立即進行更換或采取適當措施。檢查過程中不能用手觸摸端子，因為有電容帶較高的余電。
If any of the above problems are found, immediate replacement or appropriate measures should be taken. During the inspection process, do not touch the terminals with your hands because there is high residual electricity in the capacitor strip.
相信大家對
三瑩電解電容有了進一步的了解和認知，如果您正好需要采購鋁電解電容的可以隨時咨詢山東宏明電子。
I believe everyone has a further understanding and understanding of Sanying electrolytic capacitors. If you happen to need to purchase aluminum electrolytic capacitors, please feel free to consult Shandong Hongming Electronics at any time.
