To%20address%20the%20dynamic%20metering%20accuracy%20of%20DC%20power%20metering%20device,%20the%20impact%20of%20ripple%20on%20DC%20power%20metering%20accuracy%20is%20analyzed,%20and%20based%20on%20the%20conventional%20DC%20power%20metering%20algorithm,%20an%20improved%20metering%20algorithm%20for%20DC%20charging%20of%20electric%20vehicles%20is%20proposed,%20which%20introduces%20wavelet%20threshold%20denoising%20and%20parabolic%20integration%20method to DC%20charging%20stake%20power%20metering;%20the%20DC%20signal%20is%20filtered%20by%20using%20wavelet%20threshold,%20and%20then%20the%20power%20is%20integrated%20by%20using%20parabolic%20The%20wavelet%20threshold%20is%20used to filter%20the%20DC%20signal,%20and%20then%20the%20parabolic%20integration%20method%20is%20used to integrate%20the%20power to achieve%20power%20metering.%20Compared%20with%20the%20traditional%20DC%20metering%20method,%20the%20proposed%20improved%20algorithm%20has%20higher%20metering%20accuracy%20and%20is%20suitable%20for%20DC%20charging%20power%20metering%20of%20electric%20vehicles.
