Ecosense Installs Solar PV Emulator at Deptt. Of Electrical Engineering, NIT Raipur

The Ecosense’s PV Emulator is a programmable power supply designed to emulate solar panels. With fast transient response, the emulator responds to change in load conditions and maintains the output IV characteristics of the user defined panel for a given ambient condition. It is a flexible instrument designed to emulate the output of solar panels, with adjustable parameters such as Voc, Isc, shading, coefficient of temperature etc.

The PV Emulator uses an internal algorithm to adjust Voc (Open circuit voltage) and Isc (short-circuit current) so as to match the solar panel selected by the user based on user defined parameters such as Irradiation, temperature, Voc, Isc, temperature coefficient etc. The Emulator makes sure the response matches that of the actual panel under all the load conditions within range. The user is presented with a complete set of information with tables and plots on user application.

Using PV Emulator, a user is able to see the response of Solar PV Panel as per his/her own set of user defined parameters.

User can select or change the following parameters as per his/her need and will be able to see results immediately:

• Open Circuit Voltage
• Short Circuit Voltage
• Temperature coefficient
• Complete shading
• Partial Shading
• Series Resistance
• Area of Panel
• Diode quality factor
• Operating Temperature

Software Features

I-V and P-V characteristics

1. User can input his/her own Solar Cell/Panel voltage and current and realize their actual output.

2. User can change irradiation and temperature data to see the difference in output.

3. User can change Temperature coefficient to see the difference

Partial Shading

1. User can see the shading effect by defining shading region by varying G1, G2, G3, G4.

Changing in-built parameters

2. User can change series resistance of a Solar panel and see the effect on I-V and P-V characteristics of that panel.

3. User can also change Area of a Solar panel and see how it affects the efficiency.

4. User can also test an MPPT controller or a Grid Tied Inverter with an in-built MPPT algorithm using Grid Tied Test function and compare how close that algorithm is to Maximum power point.

Benefits of using PV Emulator

• User controlled, cost effective way to test response of PV system for wide range of solar panels
• Simulate the I-V curve under varying environmental conditions
• Test and verify different parameters of PV system like – MPPT tracking algorithm of PV inverter, efficiency of MPPT tracking
• Measure and verify the overall efficiency and conversion efficiency of PV inverter for variety of solar panels and in varying weather conditions
• Does not require external setup for data monitoring and data acquisition. LCD displays output characteristics and software application presents user with tables, plots and simulation parameters

Masters Training Conducted

Ecosense also conducted a masters training program at Electrical Lab. This Masters training program was focused on educating and training the professors, scholars and technicians in Hybrid Technology who will further train thousands of students and professionals to start their career or business in this very field.

Ecosense Engineer interacting with faculty
Ecosense Engineer interacting with faculty

Program Outcomes

The faculty members and students really enjoyed our two-day training programme and loved to work on our lab equipment. Professors will conduct experiments on the system to understand it more deeply and incorporate this lab set up as part of their regular curriculum.

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