The load of the rectification circuit of the intermediate frequency furnace power supply is an inverter, and the output active power of the inverter is provided by the rectifier circuit. The DC output voltage of the rectifier circuit can be continuously smoothed and regulated within specified limits (0-513v). The load of the medium frequency power supply varies greatly, and the rectifier circuit should automatically limit the output voltage. Usually, the current and voltage signals at the load side are used to change the rectifier phase shift control angle to complete the interception and interception.
The rectifier circuit is required to protect the system from over voltage and over current. The intermediate frequency furnace uses phase shift control angle =150 to make the DC output negative pressure form an active inverter. DC reactor is an important condition of active inverter. Most of the intermediate frequency power supply adopts three phase fully controlled bridge rectifier circuit. Because of its large output voltage regulation range and small change range of phase shift control angle, it is beneficial to the automatic regulation of the system. The higher pulse frequency of the output voltage can reduce the burden of the DC filter link.
Another requirement for the rectifying circuit is that when the inverter fails, the medium frequency furnace can return the energy stored in the reactor to the power grid by rectifying circuit, so that the inverter can be protected, that is, the active inverter.
Luoyang Wanle Electrical Equipment Plant established in 1992. As a high technology enterprise authorized by the Luoyang Science&Technology Committee in 1993. After developing more than 26 years, our factory products has won the reputation in the worldwide. The induction furnace has exported to Sweden, Spain, the United Kingdom, Latvia, Norway, Iran, Malaysia, Indonesia, Pakistan, Vietnam and Africa. And the factory is the first order to export medium frequency smelting equipment to Europe. With our efforts to help you solve problems encountered in production, we are unremitting pursuit.
