Air-cooled converter assembly, having heat sinks shaped as isosceles triangles

In an air-cooled converter assembly in which disc thyristors are clamped between electrically conductive heat sinks, an arrangement which saves space and permits ease of connection comprising:

• a. a plurality of heat sinks each having a front surface, a back surface and a plurality of side surfaces, at least some of said heat sinks having front and back surfaces essentially in the shape of an isosceles triangle;
• b. a plurality of disc thyristors each disc thyristor clamped between two heat sinks at least one of which has front and back surfaces in the shape of an isosceles triangle, said disc thyristors having their surfaces clamped in contact with the back surfaces of the heat sinks between which they are clamped, the heat sinks having essentially parallel front and back surfaces so that the contact surfaces of said disc thyristors are essentially parallel to the front surfaces of said heat sinks between which they are clamped;
• and
• c. said disc thyristors grouped in pairs with each pair of disc thyristors jointly clamped between their associated pairs of heat sinks so that their associated heat sinks having front and rear surfaces shaped as an isosceles triangle lie adjacent each other along their hypotenuses.