Optimal Frequency Selection for Lightest-Weight Design to Electroaerodynamic Propulsion HVPS

Electroaerodynamic propulsion high-voltage power supply (EADP-HVPS) is designed to be lightweight by increasing the operating frequency and optimizing the selection of components based on engineering experience, which makes it difficult to guarantee the optimal lightweight design. This article analyzes and proves that the relationship between the total weight and frequency of HVPS is not monotonically decreasing. This article first derives the weight-frequency relationship of the heat dissipation materials of each part of the HVPS. Then, the weight-frequency relationship of the HVPS is obtained by mathematically fitting the three central weight-frequency relationships, and the design method is given for selecting the optimal frequency point for lightweight HVPS. Finally, an experimental prototype with 140-V input, 40-kV and 619-W output prototype was designed according to the given method. It works at the optimal frequency point of 101.2 kHz, the weight is 423.9 g, and the specific power is 1.46 kW/kg. Both simulation and experiment verify the proposed theory.