Decoupled controller for single‐phase grid connected rooftop PV systems to improve voltage profile in residential distribution systems
| Autor: | Sukumar Mishra, Yateendra Mishra |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
real-time simulation
Engineering 020209 energy voltage unbalance factor invertors 02 engineering and technology Voltage regulator Power factor reactive power control Voltage controller Control theory decoupled control voltage regulation induction motors 0202 electrical engineering electronic engineering information engineering photovoltaic power systems Renewable Energy Sustainability and the Environment business.industry voltage control 020208 electrical & electronic engineering Photovoltaic system AC power power grids real-time hardware-in-the-loop Voltage regulation 090608 Renewable Power and Energy Systems Engineering (excl. Solar Cells) business electric current control Voltage |
| Zdroj: | IET Renewable Power Generation |
| ISSN: | 1752-1424 1752-1416 |
| Popis: | Unity power factor injection from single-phase photovoltaics (PVs) located towards the end of a residential feeder leads to voltage rise problems. Also, unbalanced current injection due to variable solar insolation results in voltage unbalancing and makes the situation worst. A decoupled controller for a single-phase PV inverter is proposed to improve the voltage profile of the distribution feeders. The proposed controller consists of the following components: voltage regulator (to control the amount of reactive power injection), outer voltage control loop (slow controller to set the reference for the inner current loop), inner current control loop (to control the PV inverters) and modified second-order generalised integrator (to generate fundamental frequency). A sample distribution systems consisting of several PVs located in all three phases and a three-phase induction motor load is considered. The real-time hardware-in-the-loop simulations are performed to test the efficacy of the proposed controller scheme. Results show the improvement in voltage regulation of different buses. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text