Patent ID: 8531069
Filing Date: 2013-09-10
Classification: H02K

Abstract:
1. An electrical generator, having a stator ( 16 ) and a rotor, wherein the stator ( 16 ) has a stator winding ( 18 ) which is electrically connected to a rectifier ( 105 ), wherein the rectifier ( 105 ) has positive and negative diodes ( 88 , 58 ) which are connected by a bridge circuit, wherein the positive diodes ( 88 ) are connected to a positive heat sink ( 53 ) and the negative diodes ( 58 ) are connected to a negative heat sink ( 106 ), wherein the rectifier is covered by a protective cap ( 47 ) which has cooling air openings, characterized in that the protective cap ( 47 ) has at least one opening ( 103 ) which is arranged axially above the negative diode ( 58 ) and the negative heat sink ( 106 ), wherein a connecting plate ( 56 ) is arranged between the positive heat sink ( 53 ) and the negative heat sink ( 106 ), wherein the connecting plate ( 56 ) has an opening ( 91 ) through which cooling air can flow and the opening ( 91 ) is smaller than an extreme distance between two diagonally opposite cooling air openings ( 136 ) which are arranged immediately around the positive diode, wherein the distance between the connecting plate ( 56 ) and the positive heat sink ( 53 ) is less than the distance between the negative heat sink ( 106 ) and the connecting plate ( 56 ).