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| Content Provider | IET Digital Library |
|---|---|
| Author | Padmavathi, Lakshmanan Janakiraman, Panapakkam Arumugam |
| Abstract | A new two-phase, independent control strategy for three-phase three-wire static inverters to reduce unbalance in output voltage is proposed. The three-phase voltage and current signals are processed by the ideal Clarke transform block to yield two single-phase signals, which contain information regarding unbalance and harmonics which may be present in the three-phase signals. If the two single-phase voltage signals could be controlled so that they become equal in magnitude with a phase shift of 90° (ideal alpha beta signals), then the corresponding terminal three-phase voltage signals would become balanced. Single-phase observers are employed to control the fundamental components in the two identical d-q frames created. Simultaneously, when the harmonics are eliminated in the two single-phase channels, the corresponding three-phase voltage signals would become distortion free. Feed-forward compensation can be carried out using the equivalent series-impedance parameters, estimated on-line using a simple identification algorithm. This procedure is not sensitive to frequency and can take care of the voltage drop in the distribution transformer. The simulation and experimental results for a field programmable gate array (FPGA) controlled 60 V table top inverter fabricated in the laboratory are provided. |
| Starting Page | 192 |
| Ending Page | 201 |
| Page Count | 10 |
| ISSN | 17554535 |
| Volume Number | 6 |
| e-ISSN | 17554543 |
| Issue Number | Issue 1, Jan (2013) |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-pel/6/1 |
| Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-pel.2012.0270 |
| Journal | IET Power Electronics |
| Access Restriction | Open |
| Rights Holder | © The Institution of Engineering and Technology |
| Subject Keyword | Control of Electric Power System Current Signal Distortion Reduction Distribution Transformer Equivalent Series-impedance Parameter Feed-forward Compensation Feedforward Field Programmable Gate Array Ideal Clarke Transform Block Identification Algorithm Logic And Switching Circuit Logic Circuit Modelling And Identification Observers Phase Shift Power Electronics Power Supply Power System Control PWM Invertors Simulation Single-phase Channel Single-phase Observers Single-phase Voltage Signal Supervisory Circuit Three-phase Three-wire Static Inverter Three-phase Voltage Signal Two-channel Control Two-phase Independent Control Strategy Voltage 60 V Voltage Drop |
| Content Type | Text |
| Resource Type | Article |
| Subject | Electrical and Electronic Engineering |
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