Inverter type motor drive unit
3 Assignments
0 Petitions
Accused Products
Abstract
An inverter type drive unit for feeding AC electric power of variable parameters to an electric motor comprises an electronic control section (40), a power converting and an output section comprising one or more identical power modules (11a-c), each forming a complete 3-phase output stage and arranged in a side-by-side disposition in a multiplying direction (A) and clamped by means of retaining devices (14a-c) to a cooling structure (10), wherein the power modules (11a-c) are connected in parallel to DC input terminals (25, 26) and to AC output terminals (32, 33, 34) via conductive sheets (20, 21, 27a-c), whereof the DC connected sheets (20, 21) cover substantially the entire physical surface area covered by the power modules (11a-c) so as to accomplish an even, simultaneous and low impedance DC current supply to all power modules (11a-c).
-
Citations
42 Claims
-
1-12. -12. (canceled)
-
13. Inverter type motor drive unit for feeding AC electric power of variable parameters to an electric motor, comprising:
-
an electronic control section (40), a power converting and output section controlled by the control section (40), two input terminals (25,26) for connection to a DC power source, and three output terminals (32,33,34) for delivering a 3-phase AC power to an electric motor, wherein the power converting and output section comprises;
one or more identical power modules (11a-11c), each comprising a complete 3-phase output stage, said one or more power modules (11a-11c) are multiplied by a suitable number and interconnected in parallel to meet the power demand of the actual motor size, and wherein;
said one or more power modules (11a-11c) are mounted side by side in a multiplying direction (A) on a cooling structure (10), thereby covering a certain surface area substantially corresponding in size to the surface area covered by the actual number of power modules (11a-11c), and said one or more power modules (11a-11c) are connected to said DC input terminals (25,26) and said AC output terminals (32,33,34) via conductive layers (20,21,27a-27c) which are electrically insulated from each other and extend substantially in parallel with said cooling structure (10) and covering substantially all of said certain surface area. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
-
Specification