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This paper proposes a power-loss reduction technique for a kW-scale isolated dc-dc converter, which installs a novel PWM control to achieve the soft-switching of primary side MOS-FETs. As a result, the efficiency is achieved over 90% in a wide load range. Moreover, the temperature of the primary side MOS-FETs can be reduced by 30 degrees when compared with the conventional method, and the power-density...
The active stabilisation of an HVDC distribution system with multiple constant power loads is presented. Each constant power load comprises a separate motor drive including the torque and speed control functions. By adding a simple admittance compensating controller to the current control loop of the constant power loads, the loads, and therefore the HVDC distribution system, are stabilised. Small-signal...
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