Filter device and power converter
US11456675B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 6, 2019 |
| Grant date | Sep 27, 2022 |
| Priority date | — |
| Expiry date | Aug 23, 2039 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E40/40
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Since inductance due to wiring to a Y capacitor is large, it is necessary to arrange the Y capacitor near a bus bar, and there is no degree of freedom in arranging the Y capacitor. Directions of currents flowing through a positive electrode side wiring 301 and a negative electrode side wiring 302 in a multi-core cable 300 are a direction 301a from a bus bar positive electrode terminal 114 toward the Y capacitor positive electrode terminal 201, and a direction 302b from a bus bar negative electrode terminal 115 toward the Y capacitor negative electrode terminal 202, respectively. On the other hand, a direction of a current flowing through a ground wiring 303 is a direction 302b from a Y capacitor ground terminal 203 toward a ground terminal 116. A magnetic flux generated by the currents flowing through the positive electrode side wiring 301 and the negative electrode side wiring 302 in the multi-core cable 300 and a magnetic flux generated by the current flowing through the ground wiring 303 in the multi-core cable 300 cancel each other out, and the inductance can be kept small.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.