BUS BAR ASSEMBLY OF A POWER CONVERTER
A bus bar assembly of a power converter that includes an inverter, a boost converter, and the bus bar assembly. The inverter is provided with an inverter circuit adapted for converting a direct current (DC) to an alternate current (AC), the inverter being contained within a housing. The boost converter contained within the housing and provided with a boost converter circuit adapted to step up voltage from a low voltage level to a high voltage level. The bus bar assembly includes three bus bars passed through a single electromagnetic compatibility (EMC) filter. The three bus bars include a positive bus bar, a negative bus bar, and a boost bus bar, all arranged within the housing and adapted to conduct positive DC power, negative DC power, and the output of the boost converter circuit, respectively.
1 . Power converter comprising:
an inverter provided with an inverter circuit adapted for converting a direct current (DC) to an alternate current (AC), the inverter being contained within a housing;
a boost converter contained within the housing and provided with a boost converter circuit adapted to step up voltage from a low voltage level to a high voltage level; and
a bus bar assembly comprising three bus bars passed through a single Electromagnetic Compatibility (EMC) filter, the three bus bars comprising:
a positive bus bar, a negative bus bar, and a boost bus bar, arranged within said housing to conduct positive DC power, negative DC power, and the output of said boost converter circuit, respectively.
2 . Power converter as claimed in claim 1 , wherein the positive bus bar, the negative bus bar, and the boost bus bar is at least partially covered in an overmold part of electrically insulating material, the overmold part comprising multiple through holes into which fasteners are inserted.
3 . Power converter as claimed in claim 2 , wherein the positive bus bar, the negative bus bar, and the boost bus bar are spaced apart equally within the housing.
4 . Power converter as claimed in claim 1 , wherein the positive bus bar, the negative bus bar, and the boost bus bar are each comprised with multiple bends that are adapted to maneuver internal layout requirements within the housing.
5 . Power converter as claimed in claim 4 , wherein the positive bus bar, the negative bus bar, and the boost bus bar are each divided into two sections in length, the two sections being:
a first section comprising a first free end and a connected end at either ends along the first section's length, the connected end of the positive bus bar and negative bus bar being connected to the inverter circuit and the connected end of the boost bus bar adapted to connect to stator phases of a rotary machine; and
a second section comprising a second free end and a connector end at either ends along the second section's length, the connector end being adapted to connect to an electric power source.
6 . Power converter as claimed in claim 5 , wherein the first free end and the second free end is joined together by brazing or welding.
7 . Power converter as claimed in claim 6 , wherein one of the two sections comprise a straight portion that is devoid of bends, and is passed through the EMC filter.
8 . Power converter as claimed in claim 7 , wherein the overmold part further comprises a filter housing in which the Electromagnetic Compatibility (EMC) filter is accomodated.
9 . Power converter as claimed in claim 8 , wherein the filter housing comprises a snap fit opening through which a snap fit ridge, formed on the Electromagnetic Compatibility (EMC) filter, is inserted.
10 . Power converter as claimed in claim 9 , wherein the overmold part further comprises enclosures in which capacitor modules is accomodated.
11 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 1 .
12 . Power converter as claimed in claim 2 , wherein the positive bus bar, the negative bus bar, and the boost bus bar are each comprised with multiple bends that are adapted to maneuver internal layout requirements within the housing.
13 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 2 .
14 . Power converter as claimed in claim 3 , wherein the positive bus bar, the negative bus bar, and the boost bus bar are each comprised with multiple bends that are adapted to maneuver internal layout requirements within the housing.
15 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 3 .
16 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 4 .
17 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 5 .
18 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 6 .
19 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 7 .
20 . Electric system comprising:
a rotary machine;
an electric power source; and
a power converter, configured in accordance with claim 8 .