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CE+T America Stabiliti 30C3 Manual

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Smart power conversion for the energy revolution!
Stabiliti 30C3 – Multiport Power Converter
DC Bus Method – App Note
The contents in document are subject to change without notice.
The products presented are protected by several international patents and trademarks.
All rights reserved.
www.cet-america.com

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Summary of Contents for CE+T America Stabiliti 30C3

  • Page 1 Smart power conversion for the energy revolution! Stabiliti 30C3 – Multiport Power Converter DC Bus Method – App Note The contents in document are subject to change without notice. The products presented are protected by several international patents and trademarks.
  • Page 2 CE+T America or its authorized distributors. © Copyright 2020, CE+T America. All rights reserved. No parts of this document may be reproduced in any form without the express written permission of CE+T America. CE+T America logo are trademarks of CE+T...

  • Page 3: Table Of Contents

    Contents About This Document ........................... 4 Glossary of Terms ..........................5 Important Safety Instructions ......................6 Overview ............................... 8 System Rating ............................8 Reference Document ..........................8 6.1. MAN - 00115 – Stabiliti Series 30 KW – Installation and Operation Manual – V1.0..... 8 6.2.

  • Page 4: About This Document

    1. About This Document This document is CE+T America proprietary. It is a customer facing document aimed to serve as an application note (app note) for utilizing Stabiliti 30C3 power converter’s DC bus method feature. Document Revision History: Date Revision...

  • Page 5: Glossary Of Terms

    Isolation monitor interrupter BESS Battery energy storage system, specifically e-ON’s. Based on context in the manual, BESS may refer to complete system including eON batteries and PCS. Power conversion system, specially Stabiliti 30C3 Photovoltaic Liquid Crystal Display Rapid shutdown system...

  • Page 6: Important Safety Instructions

    3. Important Safety Instructions The following safety symbols are used in this manual: Danger – Procedure or situations that require action to prevent personal injury/death or damage to equipment/environment. Warning – Indicates a potentially hazardous situation that, if not avoided, can result in serious injury or death.
  • Page 7 Danger – To avoid an electric shock, verify that the Converter’s external AC and DC Disconnects are open (off). A minimum wait time of five (5) minutes is required after opening AC and DC Disconnects to assure that the Converter’s internal capacitors have discharged to zero voltage before performing any work on the Converter.

  • Page 8: Overview

    Please read the reference documents before proceeding. 7. Target System DC bus method is utilized to support DC loads connected on same DC bus. Stabiliti 30C3 power converters can supporting the DC bus by regulating the DC voltage at a desired setpoint and dynamically sharing the load equally among multiple stabilitis supporting the same DC bus (this is accomplished by an inbuilt voltage droop algorithm.) The source of power can come from either AC or the other DC port on Stabiliti.

  • Page 9: System Configuration - Pv + Grid

    Figure 1 – DC Bus Method – Typical Setup Before the system can be used in this way, it must be configured, both physically and software wise, to support the system. 8. System Configuration – PV + Grid Before proceeding, please carefully review Stabiliti’s modbus map in detail. Pay close attention to all scaling factors.

  • Page 10: Figure 2 - Dc Bus Method - Supporting Via Pv + Grid - Configuration Flowchart

    Figure 2 – DC Bus Method – Supporting via PV + Grid - Configuration Flowchart Shown above are the steps that must be taken before stabiliti can be used to support DC bus. The flow chart assumes the system is physically connected as shown in Figure 1 where PV is optional, and AC is expected to be main source for supporting DC bus.

  • Page 11: System Configuration - Batteries + Grid

    Figure 3 – DC Bus Method – Supporting via PV + Grid – Power Flows 9. System Configuration – Batteries + Grid Before proceeding, please carefully review Stabiliti’s modbus map in detail. Pay close attention to all scaling factors. It is advisable to work with one stabiliti at a time and with stabiliti link being off (stabiliti in manual mode with user stop command, i.e.

  • Page 12: Figure 4 - Dc Bus Method - Supporting Via Batteries + Grid - Configuration Flowchart

    Figure 4 – DC Bus Method – Supporting via Batteries + Grid - Configuration Flowchart As shown here the power flows are different here as compared to PV. With PV, the stabiliti’s will automatically route all PV power to DC loads. With batteries, it is the job of central/site controller to command stabilitis to draw power from batteries to support DC loads.
  • Page 13 End of Document...

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