Efficiency Improvement for Diode-Clamped Linear Amplifier using Unequally Divided Voltage Power Supply
| Autor: | Junnosuke Haruna, Hirohito Funato, Yusuke Matano |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Linear region
Materials science Computer science 02 engineering and technology Hardware_PERFORMANCEANDRELIABILITY 01 natural sciences Optical switch Industrial and Manufacturing Engineering Electromagnetic interference 0103 physical sciences MOSFET 0202 electrical engineering electronic engineering information engineering Hardware_INTEGRATEDCIRCUITS Linear amplifier Electrical and Electronic Engineering Linear operation Diode 010302 applied physics business.industry 020208 electrical & electronic engineering Electrical engineering Semiconductor device Power (physics) Control and Systems Engineering business Voltage |
| Zdroj: | 2019 8th International Conference on Renewable Energy Research and Applications (ICRERA). |
| DOI: | 10.1109/icrera47325.2019.8996510 |
| Popis: | A high-efficiency diode-clamped linear amplifier (DCLA) has been proposed to realize low electromagnetic interference caused by switching operations. In this article, a new concept of the DCLA, namely the higher efficiency unequally divided voltage power supply DCLA (DCLA-UeDV), is proposed—it uses the same circuit topology but changes the supply voltage ratio of the series-connected supply. It is well-known that the main loss component of a DCLA is caused by the semiconductor device under linear operation depending on the supply voltage and current flowing. In a conventional DCLA, an equally divided voltage is used to supply power. In this study, a lower supply voltage is applied for a higher current device, and a higher supply voltage is applied to the lower current device in the proposed DCLA-UeDV—the optimized voltage ratio being theoretically derived. Applying the optimized voltage ratio to a four-stage DCLA-UeDV, the power loss theoretically decreased by 10.7%, resulting in an efficiency improvement of 1.7 percentage points. The validity of the proposed method was verified by simulations of a four-stage and an eight-stage DCLA-UeDV and experiments based on the four-stage device. |
| Databáze: | OpenAIRE |
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