Grid Connected Converter Mohammed Abu Radhi Sayaf Almari Fahad - - PowerPoint PPT Presentation

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Grid Connected Converter Mohammed Abu Radhi Sayaf Almari Fahad - - PowerPoint PPT Presentation

May 29, 2023 49 likes •211 views

Grid Connected Converter Mohammed Abu Radhi Sayaf Almari Fahad Alghareeb Di Miao Kaiqiong Ji 1 1f Introduction Client Dr.Venkata Yaramasu Problem Assistant Professor at NAU There is no laboratory scale prototype converters

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SLIDE 1

Grid Connected Converter

Mohammed Abu Radhi Sayaf Almari Fahad Alghareeb Di Miao Kaiqiong Ji

1f

1

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Introduction

Client’s Research Focus: A- Wind Power Systems. B- Photovoltaic Systems. C- Motor Drives. Problem

  • There is no laboratory scale prototype converters available in

the market that fits all of these applications.

  • Needs plug and play converter to fit the three power

conversion applications.

  • Having such converter will help our client to develop new

power converter topologies and test new controlling schemes such as model predictive control. Goal

  • Implement and build a prototype of multilevel converter for

high power applications and test it using model predictive control.

  • Practical power level is at 5 MW.
  • Prototype power level is at 5 kW.

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2 Fahad Client Dr.Venkata Yaramasu Assistant Professor at NAU Director of AMPERE Lab School of Informatics, Computing, and Cyber Systems Mentor Ashwija Reddy Korenda

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SLIDE 3

Update WBS of Fahad

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3 Fahad

1- Convertor Designing : ( DONE ) 100%

  • Hardware team have finished Designing the

NPC converter.

  • Checked the working of the designed NPC

converter. 2- Hardware Implementation: ( DONE ) 100%

  • Hardware Team have implemented the NPC

convertor schematic on hardware using PCB. 3- Testing: ( DONE ) 60%

  • Team Tested the designed NPC converter,

But we faced problems in the converter.

  • One of the gate drivers did not working.
  • Replaced the gate driver with a new one.

4- Documentation:

  • Storing all the results of the NPC

converter.

  • Writing IEEE paper
  • Revise and edit the IEEE paper

Current Status

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SLIDE 4

WBS of Kaiqiong Ji

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4 Kaiqiong Ji Stationary Frame of Predictive Current Control (Finished)

Two-level voltage source converter(2L-VSC) with R load

Design Synchronous Frame of PCC (Finished)

Simulation

Develop PCC for two-level Grid-Connected Converter (Finished)

Grid-Connected Converter

Develop PCC for NPC with grid (Finished) Collecting data and waveform in MATLAB (Finished) (Using dSpace control desk)

Result and Analysis

Analyze results on illustrator Current Status

Writing IEEE paper ---- PCC strategy

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PCC for Two-level Grid-Connected Converter

PCC Measure

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5 Kaiqiong Ji

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SLIDE 6

Subsystems of simulation

Back Display Waveform

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6 Kaiqiong Ji

Predictive current control(αβ frame) Measurements

Stationary current Stationary current & Reference current

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SLIDE 7

Waveform Analysis

Ig_ab Vg Ig_ab & Ig_ab(reference)

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7 Kaiqiong Ji

Repeating sequence After amplification

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SLIDE 8

WBS of Di Miao

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8 Di Miao

Person Primarily Responsible: Di Miao

ID Activity/Task Description Deliverable(s) 1.0 simulation 1.1.1

Design Stationary (αβ) Frame PCC

  • f 2L-VSC

Initialize parameter in Matlab and connect circuit in simulink function 1. Circuit schematic 2. Simulink model 3. waveform 1.1.2 Design Predictive Current Control for Grid-Connected Converter The PCC scheme for two- level GCC and calculate

  • f reference grid currents

1. Simulink model 2. waveform 3. Feedback signals 2.1 Analyze waveform and results 1. Feedback signals 2. Correct data Completed Completed Current Status

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PCC for NPC with grid

8 Switching states 27 Switching states 2L-VSC NPC converter

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9 Di Miao

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SLIDE 10

Vdc

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10 Di Miao

Vg Ig_ab & Ig_ab(reference) Ig_ab

Waveform Analysis

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WBS of Sayaf

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11 Sayaf

Complete Hardware: 100%

  • Reconnection
  • Soldering
  • Checking before testing

Testing: 60%

  • Subsystem testing and set up
  • NPC converter testing

Writing IEEE Paper: 0%

  • Simulation results
  • Experimental results
  • Revise & edit

Current status: testing the NPC converter

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SLIDE 12

WBS for Mohammed

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12 Mohammed

Activities & Tasks: 1- Hardware (100%) :

  • Client required less wiring
  • Tried another solutions.
  • Noise problem due to small

spacing.

  • Had to wire them directly.

2- Testing (60%):

  • Successful test for the

rectifier side.

  • Need to test inverter side.
  • Grid connection testing.

3- Writing IEEE Paper :

  • Writing assigned sections.
  • Revision.
  • submission.
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R Load Test

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13 Mohammed

NPC Converter Schematic R Load Testing Set Up

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Demonstration

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14 Mohammed

Results Demo Video

  • Three phase AC waveforms.
  • 5 level line to line AC waveform.
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Conclusion

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15 Sayaf

  • The team is lagging behind due to the noise problem.
  • The hardware section is finally done.
  • The team is currently doing experiments and collecting

results.

  • We will start writing the paper this week.
  • Converter met client's requirements and specifications as

much as possible.

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Questions?

Thank You

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