Abstract
Power filters have been widely adopted to suppress harmonics caused by the pulse width modulation of grid-connected inverters. In order to save the total inductance, the cost and the size of system, different kinds of power filters had been proposed for the three-phase three-wire grid-connected inverter. However, in industrial applications, due to production cost considerations, the difficulties caused by actual parameter deviations must be considered. In this paper, a new three-phase three-wire power filter is proposed, being with a simple structure almost the smallest total inductance, and strong resistance to the adverse effects of parameter shifts. The design of the filter parameters and the grid-connected system controller is introduced in details. A comparable study on the influence of parameter offset between different types of notch power filters is also given. Simulation and experimental results on a 380 V/50 Hz/6 kW three-phase inverter prototype verify the performance of the proposed power filter
| Original language | English |
|---|---|
| Pages (from-to) | 11936-11945 |
| Journal | IEEE Transactions on Industrial Electronics |
| Volume | 69 |
| Issue number | 12 |
| Online published | 13 Dec 2021 |
| DOIs | |
| Publication status | Published - Dec 2022 |
Research Keywords
- Asymmetric
- Capacitors
- Harmonic analysis
- Inductance
- LC trap
- LCL filter
- Parameter shifts
- Power filters
- Power harmonic filters
- Switches
- Switching frequency
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