Frequency converter

At a time when the country is vigorously advocating "Industry 4.0" and the manufacturing industry is facing a critical period of transformation and upgrading, as the most critical part of industrial control automation, inverters will play a huge role in the transition from "Made in China" to "Made in China" . The inverter is a well-deserved energy efficiency improvement tool and the most effective link in the entire energy conversion chain. Inverter, also known as variable frequency speed regulator, is a power control device that uses the on-off effect of the power semiconductor device IGBT to convert the industrial frequency power supply to another frequency. It can realize the soft start of the AC asynchronous motor, the frequency conversion speed regulation, and the improvement of the operation. Accuracy, power factor change, overcurrent/overvoltage/overload protection and other functions, while the performance of the core component IGBT directly affects its efficiency.

The following figure shows the electrical topology of a general inverter. The hardware circuit is divided into three parts: rectification, filtering, and inverter. The inverter part are from YIXING IGBT

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