التفاصيل البيبلوغرافية
| العنوان: |
Inverter type motor drive unit |
| Document Number: |
20060239050 |
| تاريخ النشر: |
October 26, 2006 |
| Appl. No: |
10/540820 |
| Application Filed: |
December 22, 2003 |
| مستخلص: |
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). |
| Inventors: |
Andersson, Tord Rickard (Tyreso, SE); Forborgen, Carl Mikael (Tyreso, SE); Gallas, Oliver (Johannesvov, SE); Karlsson, Ulf Ingemar (Tyreso, SE); Malmstrom, Carl-Erik (Tyreso, SE) |
| Claim: |
1-12. (canceled) |
| Claim: |
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. |
| Claim: |
14. Motor drive unit according to claim 13, wherein one of said conductive layers (27a-27c) is divided into three separate leads (27a-27c) extending in parallel to each other across said power modules (11a-11c) in said multiplying direction (A) and connecting said one or more power modules (11a-11c) in parallel to said AC output terminals (32,33,34). |
| Claim: |
15. Motor drive unit according to claim 14, wherein: all of said conductive layers (20,21,27a-27c) comprise separate metal sheets, and a number of retaining devices (14) are arranged both to connect said metal sheets (20,21,27a-27c) to said one or more power modules (11a-11c) and to clamp said one or more power modules (11a-11c) into a physical heat transferring contact with said cooling structure (10). |
| Claim: |
16. Motor drive unit according to claim 15, wherein: two of said metal sheets (20,21) are connected to said DC input terminals (2546), and said one or more power modules (11a-11c) are connected to capacitor banks (13a-13c) via said two metal sheets (20,21). |
| Claim: |
17. Motor drive unit according to claim 15, wherein: each one of said retaining devices (14) comprises a clamping member (16) and a distance piece (15) for locating each metal sheet (20,21,27a-27c) at a specific distance from said power modules (11a-11c), and said distance pieces (15) are electrically conductive and serve to establish an electrical as well as thermal contact between said metal sheets (20,21,27a-27c) and said power modules (11a-11c). |
| Claim: |
18. Motor drive unit according to claim 17, wherein: each one of said distance pieces (15) comprises a metallic tube element, and each one of said clamping members (16) comprises a screw extending axially through said tube element (15). |
| Claim: |
19. Motor drive unit according to claim 13, wherein: all of said conductive layers (20,21,27a-27c) comprise separate metal sheets, and a number of retaining devices (14) are arranged both to connect said metal sheets (20,21,27a-27c) to said power modules (11a-11c) and to clamp said one or more power modules (11a-11c) into a physical heat transferring contact with said cooling structure (10). |
| Claim: |
20. Motor drive unit according to claim 19, wherein: two of said metal sheets (20,21) are connected to said DC input terminals (2546), and said one or more power modules (11a-11c) are connected to capacitor banks (13a-13c) via said two metal sheets (20,21). |
| Claim: |
21. Motor drive unit according to claim 19, wherein: each one of said retaining devices (14) comprises a clamping member (16) and a distance piece (15) for locating each metal sheet (20,21,27a-27c) at a specific distance from said one or more power modules (11a-11c), and said distance pieces (15) are electrically conductive and serve to establish an electrical as well as thermal contact between said metal sheets (20,21,27a-27c) and said power modules (11a-11c). |
| Claim: |
22. Motor drive unit according to claim 21, wherein: each one of said distance pieces (15) comprises a metallic tube element, and each one of said clamping members (16) comprises a screw extending axially through said tube element (15). |
| Claim: |
23. Motor drive unit according to claim 3, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
24. Motor drive unit according to claim 16, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
25. Motor drive unit according to claim 17, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
26. Motor drive unit according to claim 18, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
27. Motor drive unit according to claim 19, wherein the control section (40) comprises a circuit board (41) supported by at least one of said power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
28. Motor drive unit according to claim 20, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
29. Motor drive unit according to claim 21, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
30. Motor drive unit according to claim 22, wherein the control section (40) comprises a circuit board (41) supported by at least one of said one or more power modules (11a-11c) in a parallel but spaced disposition relative to said metal sheets (20,21,27a-27c) via contact devices (42) extending through apertures in said metal sheets (20,21,27a-27c). |
| Claim: |
31. Motor drive unit according to claim 15, wherein: said conductive metal sheets (20,21,27a-27c) are insulated relative to each other by separate insulating sheets (19,30) of a non-conductive material sandwiched between said metal sheets (20,21,27a-27c), and said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) are arranged and fixed in a stack by said clamping members (16) and said distance pieces (15). |
| Claim: |
32. Motor drive unit according to claim 31, wherein one or more guide elements (36a-36c) of an insulating material are provided with stud portions (37a-37c) which penetrate through openings in said metal sheets (20,21,27a-27c) as well as said insulating sheets (19,30) to, thereby, locate said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) relative to each other prior to said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) being finally fixed by said clamping members (16) and said distance pieces (15) at mounting of said stack on said cooling structure (10). |
| Claim: |
33. Motor drive unit according to claim 16, wherein: said conductive metal sheets (20,21,27a-27c) are insulated relative to each other by separate insulating sheets (19,30) of a non-conductive material sandwiched between said metal sheets (20,21,27a-27c), and said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) are arranged and fixed in a stack by said clamping members (16) and said distance pieces (15). |
| Claim: |
34. Motor drive unit according to claim 19, wherein: said conductive metal sheets (20,21,27a-27c) are insulated relative to each other by separate insulating sheets (19,30) of a non-conductive material sandwiched between said metal sheets (20,21,27a-27c), and said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) are arranged and fixed in a stack by said clamping members (16) and said distance pieces (15). |
| Claim: |
35. Motor drive unit according to claim 20, wherein one or more guide elements (36a-36c) of an insulating material are provided with stud portions (37a-37c) which penetrate through openings in said metal sheets (20,21,27a-27c) as well as said insulating sheets (19,30) to, thereby, locate said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) relative to each other prior to said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) being finally fixed by said clamping members (16) and said distance pieces (15) at mounting of said stack on said cooling structure (10). |
| Claim: |
36. Motor drive unit according to claim 34, wherein one or more guide elements (36a-36c) of an insulating material are provided with stud portions (37a-37c) which penetrate through openings in said metal sheets (20,21,27a-27c) as well as said insulating sheets (19,30) to, thereby, locate said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) relative to each other prior to said metal sheets (20,21,27a-27c) and said insulating sheets (19,30) being finally fixed by said clamping members (16) and said distance pieces (15) at mounting of said stack on said cooling structure (10). |
| Claim: |
37. Motor drive unit according to claim 13, wherein: said conductive layers (20,21,27a-27c) comprise separate metal sheets (20,21,27a-27c), and said DC input terminals (25,26) and said AC output terminals (32,33,34) are located at opposite ends of said metal sheets (20,21,27a-27c) in relation to said multiplying direction (A). |
| Claim: |
38. Motor drive unit according to claim 14, wherein: said conductive layers (20,21,27a-27c) comprise separate metal sheets (20,21,27a-27c), and said DC input terminals (25,26) and said AC output terminals (32,33,34) are located at opposite ends of said metal sheets (20,21,27a-27c) in relation to said multiplying direction (A). |
| Claim: |
39. Motor drive unit according to claim 13, wherein a signal bus means (44a,44b) extends across said one or more power modules (11a-11c) in said multiplying direction (A) and is arranged to connect said control section (40) to each one of said one or more power modules (11a-11c) and communicating signals between said control section (40) and said one or more power modules (11a-11c). |
| Claim: |
40. Motor drive unit according to claim 39, wherein said signal bus means (44a,44b) comprises at least one circuit board (44a,44b). |
| Claim: |
41. Motor drive unit according to claim 14, wherein a signal bus means (44a,44b) extends across said one or more power modules (11a-11c) in said multiplying direction (A) and is arranged to connect said control section (40) to each one of said one or more power modules (11a-11c) and communicating signals between said control section (40) and said one or more power modules (11a-11c). |
| Claim: |
42. Motor drive unit according to claim 39, wherein said signal bus means (44a,44b) comprises at least one circuit board (44a,44b). |
| Current U.S. Class: |
363132/000 |
| Current International Class: |
02; 02 |
| رقم الانضمام: |
edspap.20060239050 |
| قاعدة البيانات: |
USPTO Patent Applications |