Talking about the main reasons for the burn-out of the rectifier bridge

The function of the rectifier bridge is to convert alternating current into direct current. In many applications, the rectifier bridge is widely used in electrical equipment. The input signal of the three-phase solid state relay is compatible with TTL and COMS digital logic circuits. The rectifier bridge module seals the rectifier tube in a shell. It is divided into full bridge and half bridge. The full bridge is to seal the four diodes of the connected bridge rectifier circuit together. The half bridge is to seal the halves of the four diode bridge rectifiers together. Two half bridges can form a bridge rectifier circuit, and one half bridge can also form a full-wave rectifier circuit with a center tap of the transformer. The selection of the rectifier bridge should be considered Rectifier circuit and working voltage. The SCR module is usually called a power semiconductor module (semiconductor module). Ximen Kang first introduced the module principle into the field of power electronics technology in 1970. It was a high-power semiconductor device with a four-layer structure with three PN junctions in the form of a module package. The bridge rectifier is a digital (two or four) seal whose main function is to convert alternating current to direct current. The rectifier, the name of the rectifier bridge, constitutes a rectifier bridge rectifier element. However, in actual use, or improper operation of installing or using this element is not enough to aggravate the parameter, it is easy to cause the rectifier bridge to burn out, etc., which affects the normal use of the device. The following is the cause of a rectifier bridge burnout failure to sort out and summarize:

Usually, in the production technology operation of the rectifier bridge module being burnt, the main reason is that the company does not match the diode selection. The power rectifier bridge can usually be added to its own individual heat sink. After the product load time exceeds the rated value, the voltage rectifier bridge module or the selection of different components is not large enough, and the rated working current is not large enough; the design of the rectifier bridge module is usually at least 1 times larger than the load current, and the withstand voltage is a good choice for 1000V. The load capacity must be confirmed or not shorted to ground.

According to the above research method, the rectifier bridge module can be developed and used normally, and the service life of the rectifier bridge can be continuously extended for one to two years. The bridge rectifier module is better. First of all, it is very convenient, and the four internal tubes are generally selected and matched, so its safety performance is relatively close, and for high-power rectification, the bridge stack can be filled with torn track blocks In this way, the performance is relatively stable. Of course, it is necessary to use various occasions and different enterprises to choose different reasonable bridge stacks. You can't just look at whether the withstand voltage is enough, such as high-frequency characteristic analysis.