* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Survey

* Your assessment is very important for improving the work of artificial intelligence, which forms the content of this project

Document related concepts

Buck converter wikipedia, lookup

Power inverter wikipedia, lookup

Stray voltage wikipedia, lookup

Electrical substation wikipedia, lookup

Standby power wikipedia, lookup

Wireless power transfer wikipedia, lookup

Variable-frequency drive wikipedia, lookup

Power over Ethernet wikipedia, lookup

Power factor wikipedia, lookup

Amtrak's 25 Hz traction power system wikipedia, lookup

Voltage optimisation wikipedia, lookup

Three-phase electric power wikipedia, lookup

Electrification wikipedia, lookup

Power electronics wikipedia, lookup

History of electric power transmission wikipedia, lookup

Electric power system wikipedia, lookup

Switched-mode power supply wikipedia, lookup

Alternating current wikipedia, lookup

Transcript

UNIFIED POWER QUALITY CONDITIONER INTRODUCTION Unified power quality conditioners (UPQCs) allow the mitigation of voltage and current disturbances that could affect sensitive electrical loads while compensating the load reactive power. It aims at the integration of series-active and shunt-active power filters. The main purpose of a UPQC is to compensate for voltage imbalance, reactive power, negative-sequence current and harmonics. BLOCK DIAGRAM 1 BLOCK DIAGRAM SHUNT ACTIVE FILTER CONTROL STRATEGY Cont……. This theory, also known as instantaneous reactive power theory. The p-q theory consists of an algebraic transformation (Clarke transformation) of the three-phase voltages and currents in the a-bc coordinates to the α-β-0 coordinates, followed by the calculation of the p-q theory instantaneous power components: Cont……. p0 = v0 ⋅ i0 instantaneous zero-sequence power. p = vα ⋅ iα + vβ ⋅ iβ instantaneous real power q = vα ⋅ iβ − vβ ⋅ iα instantaneous imaginary power The power components p and q are related to the same α-β voltages and currents, and can be written together. These quantities are illustrated in Fig. 4 for an electrical system represented in a-b-c coordinates and have the SO FAR… Simulation of upqc in matlab Block description GRID Filter control block Filter block SIMULATION RESULTS SIMULATION RESULTS Simulation results WHAT TO DO……………… Design and simulation of series active filter. Simulation of UPQC. CONCLUSION THANK YOU……………….