2011 Volume 131 Issue 4 Pages 633-639
This paper presents operating characteristics of a diode-clamped linear amplifier (DCLA) in regenerative-operating conditions. The DCLA consists of series-connected MOSFETs, series-connected dc power supplies, and clamping diodes. The circuit configuration is similar to that in a diode-clamped multilevel inverter. The DCLA uses complementary MOSFETs. One of the series-connected MOSFETs is only operates in the active state, while the other MOSFETs are in that on- or off- state. Thus, the DCLA is much smaller in the power loss than a conventional class-B amplifier. In addition, the DCLA enables the regeneration of the electric power from the ac terminals to the dc power supplies, when connected to a regenerative load. The power loss under a regenerative condition is theoretically derived and verified by using the experimental setup of the 12-series DCLA. As a result, the experimental setup have demonstrated that the loss in the DCLA in a regenerative operation is only 8% of the regenerative power.
The transactions of the Institute of Electrical Engineers of Japan.C
The transactions of the Institute of Electrical Engineers of Japan.B
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan