Abstract
In this paper, a simple model predictive current control strategy is proposed for four-leg inverters to deliver power to the (un)balanced/(non)linear loads. Unlike classical control schemes, the proposed method does not require current PI controllers or a complex modulation stage. The discrete-time model of the inverter, filter, and load are used to predict the future behavior of the load currents for each of the 16 possible switching states. The control method chooses a switching state that minimizes the error between the output currents and their references. The performance of the proposed method has been investigated for perturbations in the filter and load parameters. The neutral-leg switching frequency reduction algorithm is also proposed to improve the efficiency of the converter. The feasibility of the proposed method is verified in this first part, through simulation results.
| Original language | English (US) |
|---|---|
| Article number | 6353643 |
| Pages (from-to) | 3459-3468 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Power Electronics |
| Volume | 28 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2013 |
| Externally published | Yes |
Keywords
- Control systems
- current control
- dc-ac power conversion
- digital control
- discrete-time signals
- distributed generation
- finite control set (FCS) model predictive control (MPC)
- four-leg converters
- grid-connected
- shunt active power filters (SAPFs)
ASJC Scopus subject areas
- Electrical and Electronic Engineering