Application of IPM FNA41560 in ultrasonic generator
                                                                 JI Shi ming1, CHEN Kai1,2, TAN Da peng1, ZHANG Li1
（1.College of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, China;2.Key Laboratory of Digital Design and Intelligent Manufacturing for Creative Cultural Products of Zhejiang Province, Lishui University, Lishui 323000, China）

Abstract: Aiming at the special requirements to the ultrasonic function for soft abrasive flow machining, the specialized ultrasonic generation system was researched and designed. The ultrasonic generator was mainly composed of transducer, horn and ultrasonic generator power supply. The advantages such as simple circuit, small size, multi function, low cost and good performance were introduced by design of an ultrasonic generator power with intelligent power module. An ultrasonic generator with FNA41560 as the key component was introduced. The main circuit topology, protection, control strategy, impedance matching and frequency tracking were introduced. The results indicate that the power module combined with microprocessor control technology has the advantage that other electronic devices can not match in the field of low frequency ultrasonic generator.

Key words: intelligent power module; ultrasonic generator; class d amplifier; IGBT