# US 2019/0318878 A1 · Capacitor component for an electric motor or generator > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0318878 A1 - Document ID: US20190318878A1 - Status: Published application - Kind: A1 - Application number: 16/464,975 - Filed: 2017-11-22 - Published: 2019-10-17 - Earliest claimed: 2016-11-30 - Assignees: Protean Electric Limited - Applicants: Protean Electric Limited - Inventors: Geoffrey Owen; Gareth Roberts - Web page: https://patentgrep.com/patent/US20190318878A1 ## CPC - H01G 4/40: Structural combinations of fixed capacitors with other electric elements, the structure mainly consisting of a capacitor, e.g. RC combinations - H01G 2/04: specially adapted for mounting on a chassis - H01G 2/106: {Fixing the capacitor in a housing} - H01G 4/224: Housing; Encapsulation - H01G 4/38: Multiple capacitors, i.e. structural combinations of fixed capacitors - H02K 11/0094: {Structural association with other electrical or electronic devices} - H02K 11/33: Drive circuits, e.g. power electronics (H02K11/38 takes precedence) - H05K 7/14329: {specially adapted for the configuration of power bus bars} - H01G 2/08: Cooling arrangements; Heating arrangements; Ventilating arrangements - H01G 4/248: the terminals embracing or surrounding the capacitive element, e.g. caps (H01G4/252 takes precedence) - H02K 3/522: {for generally annular cores with salient poles} - H02K 2203/09: Machines characterised by wiring elements other than wires, e.g. bus rings, for connecting the winding terminations - H10W 72/5475: {multiple bond wires connected to common bond pads at both ends of the wires} - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10 - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A capacitor component comprising a first busbar, a second busbar, one or more capacitor elements and a housing, the housing having a first portion and a second portion, where-in the first portion and the second portion are arranged to extend around an aperture, the first portion includes a section for housing the one or more capacitor elements, with the second portion extending between a first end and a second end of the first portion. The first busbar and the second busbar are arranged to extend around the first portion and the second portion of the housing. A first power supply terminal is formed at the first end of the first portion and is coupled to the first busbar, and a second power supply terminal is formed at the second end of the first portion and is coupled to the second busbar. ## Claims ### Claim 1 A capacitor component comprising a first busbar, a second busbar, one or more capacitor elements, and a housing, the housing having a first portion and a second portion, wherein the first portion and the second portion are arranged to extend around an aperture, the first portion includes a section for housing the one or more capacitor elements, with the second portion extending between a first end and a second end of the first portion, wherein the first busbar and the second busbar are arranged to extend around the first portion and the second portion of the housing, a first power supply terminal is formed at the first end of the first portion and a second power supply terminal is formed at the second end of the first portion, wherein the first power supply terminal is coupled to the first busbar and the second power supply terminal is coupled to the second busbar, wherein a first conductive layer of the one or more capacitor elements is coupled to the first busbar and a second conductive layer of the one or more capacitor elements is coupled to the second busbar. ### Claim 2 (depends on 1) A capacitor component according to claim 1, wherein the first busbar has a first section arranged to extend around the first portion of the housing and a second section arranged to extend around the second portion of the housing. ### Claim 3 (depends on 1) A capacitor component according to claim 1, wherein the second busbar has a first section arranged to extend around the first portion of the housing and a second section arranged to extend around the second portion of the housing. ### Claim 4 (depends on 2) A capacitor component according to claim 2, wherein the first busbar and/or the second busbar includes a gap in the first section of the first busbar and/or the second busbar. ### Claim 5 (depends on 1) A capacitor component according to claim 1, wherein the first busbar and the second busbar are separated by an insulating film. ### Claim 6 (depends on 1) A capacitor component according to claim 1, wherein a first subset of the plurality of capacitor elements corresponds to a first capacitor and a second subset of the plurality of capacitor elements corresponds to a Y capacitor, wherein the Y capacitor is arranged in series and in parallel to the first capacitor. ### Claim 7 An electric motor or generator comprising: a stator having two coil sets arranged to produce a magnetic field for generating a drive torque; two control devices; and a capacitor component comprising: a first busbar; a second busbar; one or more capacitor elements; and a housing having a first portion and a second portion, wherein the first portion and the second portion are arranged to extend around an aperture, the first portion includes a section for housing the one or more capacitor elements, with the second portion extending between a first end and a second end of the first portion; wherein the first busbar and the second busbar are arranged to extend around the first portion and the second portion of the housing, a first power supply terminal is formed at the first end of the first portion and a second power supply terminal is formed at the second end of the first portion; wherein the first power supply terminal is coupled to the first busbar and the second power supply terminal is coupled to the second busbar; wherein a first conductive layer of the one or more capacitor elements is coupled to the first busbar and a second conductive layer of the one or more capacitor elements is coupled to the second busbar; wherein the capacitor component is arranged to be coupled to a power source for providing current to the two control devices; wherein the first control device is coupled to a first coil set and the capacitor component and the second control device is coupled to a second coil set and the capacitor component; and wherein each control device is arranged to control current in the respective coil set to generate a magnetic field in the respective coil set. ### Claim 8 (depends on 7) An electric motor or generator according to claim 7, wherein each coil set includes a plurality of coil sub-sets, wherein the first control device is coupled to the plurality of coil sub-sets for the first coil set and the second control device is coupled to the plurality of coil sub-sets for the second coil set and each control device is arranged to control current in the respective plurality of coil sub-sets to generate a magnetic field in each coil sub-set to have a substantially different magnetic phase to the other one or more coil sub-set in the respective coil set. ### Claim 9 (depends on 7) An electric motor or generator according to claim 7, wherein the first control device, the second control device and the capacitor component are mounted adjacent to the stator. ### Claim 10 (depends on 7) An electric motor or generator according to claim 7, wherein the stator includes an annular recess for housing the capacitor component. ### Claim 11 (depends on 10) An electric motor or generator according to claim 10, wherein the first control device and the second control device are mounted on the stator adjacent to the annular recess. ### Claim 12 (depends on 10) An electric motor or generator according to claim 10, wherein the first control device and the second control device are mounted on the stator between the outer radial edge of the stator and the annular recess. ### Claim 13 (depends on 7) An electric motor or generator according to claim 7, wherein the first control device includes a first inverter for controlling current flow in the first coil set and the second control device includes a second inverter for controlling current flow in the second coil set, wherein each inverter is coupled to the first capacitor. ### Claim 14 (depends on 13) An electric motor or generator according to claim 13, wherein the first inverter and the second inverter are mounted at substantially the same distance radially from the capacitor component. ### Claim 15 (depends on 13) An electric motor or generator according to claim 13, wherein the first inverter and second inverter are coupled to the first electrical busbar and the second electrical busbar. ### Claim 16 (depends on 7) An electric motor or generator according to claim 7, wherein the first portion of the housing forms a section of an annular ring and the second portion of the housing is arranged to extend around cooling conduits entering the electric motor or generator and/or cabling entering the electric motor or generator. ### Claim 17 (depends on 7) An electric motor or generator according to claim 7, wherein the first portion of the housing forms a section of an annular ring and the second portion of the housing is substantially straight.