Abstract
Harmonic currents always exist in a dual three-phase permanent magnet synchronous machine due to the inverter nonlinearity, nonsinusoidal back-electromotive force, and external disturbances. This article proposes a deadbeat predictive harmonic current control (DPHCC) method to suppress the harmonic currents. The DPHCC method can directly calculate the harmonic control voltage based on the sampled harmonic currents and the machine model. Thus, the steady-state and transient-state performance of harmonic current control can be improved. Further, a disturbance observer is designed to avoid the influence of inaccurate machine parameters and other unmodeled disturbances. The observer is designed based on discrete-time sliding mode theory and an improved sliding mode reaching law. The stability of the observer has been analyzed, and the value range of the observer parameters has been determined theoretically. Finally, experimental results have been presented to verify the effectiveness of harmonic current suppression for the proposed control system.
| Original language | English |
|---|---|
| Pages (from-to) | 3482-3492 |
| Number of pages | 11 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 70 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 1 Apr 2023 |
| Externally published | Yes |
Keywords
- Deadbeat control
- disturbance observer
- dual three-phase
- harmonic current
- permanent magnet synchronous machine (PMSM)
- sliding mode
ASJC Scopus subject areas
- Control and Systems Engineering
- Electrical and Electronic Engineering