Hybrid Solar Electricity System

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What is it?

Solar Hybrid Systems puts an end to the major limitation of OFF-Grid / ON-Grid (Grid Tie) systems.

In OFF-Grid systems, excess production cannot be exported to the grid. Meanwhile, ON-Grid systems wont provide back-up during a power failure. 

Whereas, Hybrid systems are built to meet those problems. When there is electricity in the power line,It can export the excess production . Also, it can, give electricity back-up, on power failure.

Benefits...

  • Most importantly, it allows feeding excess power generated to the GRID
  • No need of additional inverter for power Back-up
  • “STUDER” inverters can sync with any other Grid – Tie inverter. This will allow easy future                  up-gradation.
  •  High efficieny system.

Demerits...

  • Expensive
  • Permission from the service provider (KSEB) is required to feed power to the grid.
  • Limited capacity

Installation...

            Solar hybrid systems can be installed similar to other solar power generation systems. It is good to install it as an OFF-GRID system. Subsequently, you can apply for grid connection. 

  It is possible to apply for the Grid Connectivity at any time. But, always consult the service provider, before starting the installation

Also, it is worth to identify the correct connected load that has to be connected to the system.

In other words, it is better to know how  much electrical units you need to run the devices you are planning to connect.
For instance, consider that you want to connect only 5 Fans and 10 Light bulbs of 50 Watts each.
Then you need a system with minimum capacity of 1250 VA. This study has to be done prior to the installation. 
This study has to be done prior to the installation. Certainly, you should refer the articles in the “Blog” page by clicking here….
Above all, you should find a professional installation team to configure the system. 

Possible Configurations for Solar Hybrid Systems...

Instance - 1 :

General wiring…

Solar Hybrid Systems - Possible Solution - Instance 1
  • Grid = Present, Solar = Present
  • Conditions – Grid will be powering the load
  • Grid charging of battery – Programmable
  • Priority charging – Solar Power

Instance - 2 :

Pure OFF-GRID Topology…
hybrid Solar System - Pure OFF-GRID topology
  • Grid = Absent, Solar = Present
  • Conditions – Solar (+ Battery) will be powering the load
  • Grid charging of battery – Not Available

Instance - 3 :

Load sharing with Grid Power Topology – With full solar availability… 

Load Sharing With Grid Power Topology
  • Grid = Present, Solar = Present
  • Grid power will not be consumed even though the GRID is available
  • Complete generation will be diverted to load, post charging of the battery

Instance - 4 :

Load sharing with Grid Power Topology – With partial solar availability… 

Img 4
  • Grid = Present, Solar = Present Partially
  • Load shares solar and the grid power, thereby reducing the grid utilization

Instance - 5 :

Load sharing with grid power – Topology with full solar availability and partial load demand…

Img 5
  • Grid = Present, Solar = Present 
  • The excess power generated by solar will be fed back to the grid

Instance - 6 :

Load sharing with grid power – Topology with full solar availability and No Load…

Full solar availability and no load topology
  • Grid = Present, Solar = Present 
  • Export 100% power generated from solar to grid

Instance - 7 :

Priority to renewable energy without grid injection…
Renewable energy priority with no grid injection

Inferences...

Solar Hybrid Systems are the most effective solar electricity generating system. Although, it is the most effective system, there are many questions that has to be answered.

Question No. 1 : We can get the same functionalities when we combine a Grid Tied System and a Small Back Up system. Such a system is cost effective and easy to install. Then, why should i go for a Hybrid System?
Questions No.2 : If the PCU of the Hybrid System fails, the production and backup both will be stopped. If we install two separate systems, then either of the system may work. Then why should i go for a Hybrid System?
Question No. 3 : Price of the system. The Return On Investments will take long since the price is high. How can i get rid of this?
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