High Voltage Direct Current Energy Transmission (HVDCT) Air-Core Inductor, and Method for Manufacturing the HVDCT Air-Core Inductor

A high voltage direct current energy transmission (HVDCT) air-core inductor, comprising:

• at least one concentric winding layer having electrical terminals formed at ends thereof;
• an electrostatic screen, comprising a layer made of electrostatically dissipative material which has a surface resistance in a region of 109 to 1014 ohm/square, the layer being provided at least at one end with a collector electrode extending substantially over its periphery for connection at one terminal of the electrical terminals;
• wherein the layer is formed as a spray coating on a lateral surface of an externally arranged winding layer.

A method for producing a high voltage direct current energy transmission (HVDCT) air-core inductor, comprising:

• providing at least one concentric winding layer;
• and
• coating the at least one concentric winding layer on an outer lateral surface via a spray coating method in which a layer made of a semiconducting paint which is formed from an electrostatically dissipative material having a surface resistance in a region from 109 to 1014 ohm/square.