Method of controlling an NPC inverter operating in overmodulation
US8564994B2 · kind B2 · utility
7Cited by
6References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 22, 2011 |
| Grant date | Oct 22, 2013 |
| Priority date | — |
| Expiry date | Oct 19, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02M7/487
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method of controlling a multilevel inverter of NPC (Neutral Point Clamped) type. The method includes regulating the electrical potential of the mid-point when the inverter operates at full voltage, that is to say in overmodulation. In this case, the method firstly determines the position of the control voltage vector in one of the six identical triangles covering the hexagonal vector space and thereafter decomposes the control voltage vector in the triangle by taking account of control combinations, defined in this triangle, for the switching arms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.