Title :
Fullbridged MOS-FET DC-to-RF power inverter for use with high-frequency high-power ultrasonic transducer
Author :
Ikeda, Hiroaki ; Suzuki, Taiju ; Nakabori, Tsuyoshi ; Yoshida, Hirofumi ; Honda, Keisuke ; Miyamoto, Toshiaki ; Yamamoto, Takeshi ; Sano, Shuich
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
A full-bridge MOSFET DC-to-RF power inverter consisting of four branches, each branch consisting of three MOSFETs connected in parallel to enhance the power handling capability, was built for driving a high frequency, high power ultrasonic transducer with an output power of 600 W operating at 1 MHz. When the power inverter was connected to the ultrasonic transducer through an output transformer with a primary-to-secondary winding ratio of 2 to 1, the load impedance looking into the load from the inverter was 3.5 ohms at 1 MHz, and was high enough to drive the load with high power conversion efficiency, i.e., over 80%
Keywords :
DC-AC power convertors; acoustic transducers; bridge circuits; field effect transistor switches; high-frequency transformers; invertors; load (electric); power MOSFET; power field effect transistors; power semiconductor switches; power supplies to apparatus; power transformers; switching circuits; transformer windings; ultrasonic transducers; 1 MHz; 3.5 ohm; 600 W; DC/AC; HF; full-bridge MOSFET inverter; load impedance; output transformer; parallel connection; power conversion efficiency; power handling capability; primary-to-secondary winding ratio; ultrasonic transducer; Capacitors; Circuits; Coaxial cables; Impedance; Inverters; Power generation; Radio frequency; Transformer cores; Ultrasonic transducers; Voltage-controlled oscillators;
Conference_Titel :
Industrial Electronics, Control and Instrumentation, 1994. IECON '94., 20th International Conference on
Conference_Location :
Bologna
Print_ISBN :
0-7803-1328-3
DOI :
10.1109/IECON.1994.397760
