一篇文章搞清楚：電容、儲能、耦合和諧振

2025-12-19

電容就好比水坑，水流過來，在水坑緩沖一下，再流過去就平穩了，這就是濾波。一、什么是儲能呢？答：留在水坑里的水就是儲能。二、什么是耦合呢?答：水流流過的頻率慢，水進入坑里不連通，水頻率快了，來不及充滿水坑就連通了，通高頻、阻低頻、幫助信號高速傳遞就是耦合。三、什么是諧振?答：電容與電感接合，可以在電路中產生震蕩，這就是諧振。

一個視頻看懂如何測量IGBT

2025-12-09

設備功率管IGBT測量方法，1、2、3腳分別是G、C、E，用萬用表10K歐姆檔測量，黑表筆接第2腳，紅表筆接第3腳。用手觸摸1、2腳導通，觸摸1、3腳截止，說明這個功率管是完好的。How to measure the IGBT？Measurement method for IGBT of equipment power transistor, pins 1, 2, and 3 are G, C, and E respectively, measured with a multimeter in 10K ohm range, with the black probe connected to pin 2 and the red probe connected to pin 3. Touch pins 1 and 2 with your hand to turn on, and touch pins 1 and 3 to turn off, indicating that this power transistor is intact.

一個視頻了解光伏的心臟-逆變器

2025-12-05

光伏就是把太陽能轉化為電能的過程，但太陽能產生的是直流電，而電網傳輸、設備運行使用的都是交流電，所以需要把直流轉化為交流。交流轉直流叫整流，直流轉交流叫逆變，這個設備是：逆變器。是光伏的核心部件，常用在新能源汽車里。它的轉化效率時刻影響著發電效率，把電池的直流轉換為交流，以供電機使用。逆變器的重要性堪比燃油車的變速箱，因為它負責控制電流、電壓和頻率，從而改變電機的轉速、扭矩，影響著電機的能耗、馬力，對純電續航和性能影響巨大。 The heart of photovoltaics - invertersPhotovoltaics is the process of converting solar energy into electrical energy, but solar energy generates direct current, while the power grid transmission and equipment operation use alternating current, so it is necessary to convert direct current into alternating current. The conversion of AC to DC is called rectification, and the conversion of DC to AC is called inversion. This device is an inverter. It is the core component of photovoltaics and is commonly used in new energy vehicles. Its conversion efficiency constantly affects the power generation efficiency, converting the DC of the battery into AC for use by the motor. The importance of an inverter is comparable to that of a gearbox in a gasoline car, as it is responsible for controlling current, voltage, and frequency, thereby changing the speed and torque of the motor, affecting its energy consumption and horsepower, and having a huge impact on pure electric range and performance.