Method and apparatus for current shaping in electronically commutated motors
US6369535B1 · kind B1 · utility
11Cited by
1References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2001 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Jul 31, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02P2209/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A method and apparatus are disclosed for shaping current in an electronically commutated motor (ECM), the method comprising: acquiring a set of terminal voltage measurements; estimating an instantaneous rotor angle from the terminal voltage measurements; generating a set of phase current commands from the instantaneous rotor angle and from a torque reference signal, each of the phase current commands comprising at least one ripple compensation command segment and at least one zero current command segment; and converting the set of phase current commands to a set of current reference signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.