Application of IGBT module in low-voltage frequency converter

■Industry demand

Variable frequency speed regulation has been recognized as one of the most ideal and promising speed regulation methods. The main purpose of choosing a universal frequency converter to form a variable frequency speed regulation transmission system is to:

1. In order to improve labor productivity, enhance product quality, increase equipment automation, and improve quality of life;

2. In order to save energy and reduce production costs.

In terms of the application field of low-voltage frequency converters, they have been applied in various industries in China, and the common application areas are as follows:

1. After using variable frequency speed regulation, the fan can be easily adjusted according to actual needs. Due to the removal of unnecessary losses and the improvement of power factor, its comprehensive energy-saving rate is over 30%.

2. Speed regulating machinery can greatly improve efficiency, save electricity, require minimal maintenance, be safe, reliable, and have a short investment return period by replacing these types of motors with asynchronous motors and variable frequency speed controllers. This is extremely beneficial for improving the economic benefits of enterprises.

Low voltage frequency converters have a wider range of specific applications, such as cranes, conveyor belts, water pumps, machine tools, assembly lines, central air conditioning, elevators, etc.

■System topology:

The diagram shows the topology of a universal frequency converter, in which the components that use the StarPower module are the rectifier part, the braking part, and the inverter part.

■Recommended IGBT module selection