Dynamic stepless reactive and unbalance power compensator

Project Title

Dynamic stepless reactive and unbalance power compensator

Project Area of Specialization Electrical/Electronic EngineeringProject Summary

Technology is used for dynamic reactive power compensation, unbalanced load compensation, and voltage stability improvement. It can provide compensation in grid supply. Apart from the grid supply network, it can support dynamic loads fed from the generator. It can be operated dynamically to compensate for fast varying capacitive, inductive and unbalanced loads. By varying the magnitude of AC terminal voltage of VSC, reactive power exchange takes place between the VSC and the AC source. If the magnitude of VSC voltage is more than the AC source voltage, capacitive current flows from the supply voltage to VSC and the device generates capacitive reactive power. If the magnitude of VSC voltage is less than the AC source voltage, inductive current flows from the supply voltage to VSC and the device generates inductive reactive power. If the amplitude of VSC voltage is equal to the AC source voltage, no current flow happens between the supply voltage and VSC; This device does not generate reactive power. Further, the device generates an appropriate magnitude of voltages at the AC terminal of VSC to compensate for the negative sequence current caused due to unbalanced loads. Hence, the source will be totally relieved from reactive current and negative sequence current (due to unbalanced loads). This results in the flow of balanced real current in all three phases in the Applications Instantaneous step-less power electronics-based dynamic compensator for dynamic reactive power (power factor) and unbalanced loads.

Project Objectives

The objective is to design a  dynamic step-less reactive/ unbalance power compensator using Simulink and then implement it on hardware. It will be a fast feedback control system consisting of power electronics devices.

PQvar is a new approach to power factor correction and load balancing. The modular design and compact structure make it the ideal solution for active step-less PFC and load balancing in industrial applications and commercial buildings. Compared to conventional PFC systems, PQvar offers a response time of less than 15 ms and a dynamic reaction time of fewer than 50 µs. It can compensate for both inductive and capacitive loads and achieve a power factor of 0.99.

Project Implementation Method

The schedule of this project is perhaps planned on a step by step strategy to meet various checkpoints to approach the final design. The idea is to strongly develop the theoretical aspects of the design and work on the literature review in detail to have the firm grip on the concepts. The next step is to show some software skills to develop the design on SIMULINK. Last but not the least; we will work on designing the project with the help of our hardware skills and interlink the software and hardware operation so as to design the final product with desired operations.

Benefits of the Project

The benefits of the project are as follows:

•Controllable reactive current source

•Extremely rapid dynamic compensation reaction time of less than

 50 µs and a state response time of less than 15 ms.

•Active compensation device for usage without capacitors or reactors to avoid resonance conditions.

•Compensation of both inductive and capacitive reactive power.

•Provides load balancing.

•Installation with conventional capacitor banks possible.

•Available for low-voltage and medium-voltage levels.

•Wide range of compensation outputs from 30 Kvar to 12,000 Kvar.

Technical Details of Final Deliverable

•Power quality compensator- Reactive (PQCR) will provide an instantaneous voltage reactive power compensation solution for inductive and capacitive loads for low or medium voltage networks.

•In addition, it will be improving power quality and efficiency of the electrical network, and ensuring grid compliance, PQCR reduces system losses, lowers the carbon footprint, and enhances the life of electrical installations.

Final Deliverable of the Project HW/SW integrated systemCore Industry SecurityOther Industries Energy Core Technology OthersOther TechnologiesSustainable Development Goals Affordable and Clean Energy, Decent Work and Economic Growth, Industry, Innovation and Infrastructure, Reduced InequalityRequired Resources

Item Name	Type	No. of Units	Per Unit Cost (in Rs)	Total (in Rs)
			Total in (Rs)	67485
Dynamic inverter for 1.5KW	Equipment	1	40000	40000
DC/AC boost converter	Equipment	1	500	500
Step-up transformer	Equipment	1	500	500
Battery bank	Miscellaneous	1	7000	7000
DC bus capacitor	Equipment	10	25	250
PWM reactor	Equipment	1	35	35
Input filter circuit	Equipment	1	4000	4000
Main power contactor	Equipment	1	1500	1500
Auxilliary MCB	Equipment	1	1700	1700
Incoming power MCCB	Equipment	1	12000	12000