improved direct current load flow model

direct current-direct current DC-DC converter

direct-current direct-current converter

alternating current-direct current

asymmetric alternating current-direct current powe

asymmetric alternating current-direct current power supply

direct current flow

1 000 kV ultra-high voltage direct current

3-D direct current survey

accumulator direct current supply

activating tungsten inert-gas welding with direct current straight polarity mode

alternating and direct current desalting

alternating current AC-direct current DC-AC

alternating current to direct current

amplifier， direct-current

attenuation curve in direct current

attenuation direct-current component

bidirectional direct current converter

Blushless Direct Current Motor