Modular electrical card for power components
View Patent ↗The electrical card has power modules constituted by power components and by control components that are carried by strips fastened on a support plate comprising an electrical ground plate. The power components are connected firstly to control buses, and secondly to power buses carried by the support plate and extending in a layer adjacent to the electrical ground plate.
1. An electrical card having power modules constituted by power components and by control components, wherein the power components and the control components are carried by strips fastened on a support plate comprising an electrical ground plate, the power components being disposed in front of a principal face of the support plate and being connected firstly to control buses, and secondly to power buses, the control buses and the power buses being carried by the support plate and extending in a layer adjacent to the electrical ground plate.
2. The electrical card according to claim 1 , wherein the support plate also includes a metal mechanical-backing plate on a side of the power buses that is opposite from the electrical ground plate.
3. The electrical card according to claim 1 , wherein the power buses extend in a single layer adjacent to one of a plurality of faces of the electrical ground plate, and wherein the control buses extend on a face of the electrical ground plate that is opposite from the power buses.
4. The electrical card according to claim 1 , wherein the power components are carried by power strips extending perpendicularly to the electrical ground plate and arranged so as to co-operate with the electrical ground plate to define elongate channels.
5. The electrical card according to claim 4 , wherein the control components are carried by control strips extending in the channels defined by the power strips, being spaced apart therefrom.
6. The electrical card according to claim 4 , wherein the control components are carried by control strips extending in an axial direction of the channels.
7. The electrical card according to claim 6 , wherein the control strips extend halfway from the ends of the channels.
8. The electrical card according to claim 1 , wherein the power buses comprise mutually adjacent straps having ends that form projecting tabs that are in alignment both in a longitudinal direction and in a transverse direction of the support plate.
9. The electrical card according to claim 8 , wherein the power buses are of L-shapes that are mutually engaged one in another.
10. The electrical card according to claim 1 , wherein the support plate presents an L-shape, with a portion thereof forming a rear wall of the power module.