POWER UNIT

THE PERFECT SOLUTION FOR BATTERY STORAGE PROJECTS

The Multiplex Power Unit is a versatile and modular system with numerous configuration options that meets almost every requirement in battery projects.

General functions at a glance:

  • Ready-to-connect power unit including inverter
  • Optimized solution for efficient installation and commissioning
  • Combination of electrical engineering and energy management (EMS)
  • EMS with versatile use cases and external connections
  • Efficient monitoring with intuitive user interfaces
  • Optimization through artificial intelligence
  • Commissioning service by specialists – online or on site
  • IoT platform over the life cycle with OTA update

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Ready-to-connect power unit for battery blocks

The Multiplex Power Unit is delivered to the construction site fully preconfigured as a ready-to-connect power unit on a prefabricated concrete foundation. All components are assembled at the factory and perfectly matched to each other – for fast, uncomplicated commissioning.

Thanks to the modular concept with numerous customization options, the Power Unit can be flexibly adapted to almost any requirement. This minimizes the planning effort and ensures an efficient and future-proof solution for energy storage.

Multiplex Power Unit – Power units

Multiplex Commercial

Scope of services

Customer grid connectionLow voltage at the grid connection point
Mains functionOngrid
InverterManufacturer XXX
Battery blockManufacturer XXX
Number of use cases8 (Battery, PV, Mobility)

Multiplex Industrial

Scope of services

Customer grid connectionMedium voltage at the grid connection point
Mains functionOngrid
InverterManufacturer XXX
Battery blockManufacturer XXX
Number of use cases8 (Battery, PV, Mobility)

Multiplex Utility

Scope of services

Customer grid connectionMedium voltage at the grid connection point
Mains functionOngrid
InverterManufacturer XXX
Battery blockManufacturer XXX
Number of use cases3 (Battery, PV)

Intelligent battery storage control

LOCAL USE CASES

  • Own consumption
  • Peak shaving at the grid connection point (Year Peak)
  • SOC Sharing
  • High load time window
  • External interface
  • Emergency and backup power supply

Local battery optimization

  • Photovoltaic surplus charging with feed-in limitation at the grid connection point with weather forecast
  • Photovoltaic surplus loading with negative energy prices (day-ahead market prices)
  • Optimization of procurement costs
  • Multi-use with SOC sharing according to timetable
  • Multi-use with dynamic SOC sharing according to forecasts

Battery optimization Trading

  • Energy Trading Day-Ahead & Intraday Auction
  • Grid Services (FCR, aFCR)

Energy management – flexible, safe, intelligent

The Multiplex Power Unit is supplied with a suitable energy management system (EMS) – optimally tailored to individual applications.

  • Ready-to-connect EMS hardware for indoor & outdoor use
  • The EMS hardware is already integrated, preconfigured and tested in the Power Unit at the factory
  • Compact unit with power supply, connectivity, IoT connection, cybersecurity & control system
  • A future-proof system for maximum efficiency and safety

Three hardware configurations and several use cases are available.

Functions of the energy management portal

  • Local Live View with all relevant real-time values
  • System overview and performance dashboard
  • Data analysis
  • Setting settings and parameters
  • Status and alarm overview
  • Remote maintenance via VPN
  • Multi-Users
  • Multi-Language

IoT platform

In the EMS system architecture, the IoT platform performs essential tasks for accessing and managing the local EMS controllers and provides the visualization for the end customer via a modern dashboard architecture.

  • Management of local EMS controllers with intuitive dashboard
  • User-friendly visualization for the end customer
  • Remote access for commissioning and support
  • “Over The Air” (OTA) updates for all EMS controllers
  • Kubernetes-based open source architecture for individual customization
  • Rest API for external data usage
  • Meets IEC 62443 and NIST Cyper Security Framework 1.0. requirements
  • Flexible tariff models according to data volume and time resolution possible

AI Optimizer

The EMS platform offers comprehensive optimization options and maximizes revenue and savings for the customer in several stages.

Step 0: No optimization – the memory only supports a defined use case.

Step 1: A fixed schedule distributes the battery capacity between two use cases, e.g. peak shaving in winter and self-consumption optimization in summer.

Step 2: AI-based forecasts dynamically optimize the storage system based on load profile, generation and day-ahead market prices – ideal for customers with dynamic electricity tariffs.

Step 3 & 4: The available capacity is determined for the following day and can be used for energy trading or grid services via a virtual power plant. The EMS platform takes over the dynamic optimization.

A graphic shows an example of peak shaving combined with balancing power marketing.

AI Trading

The EMS platform offers various options for integrating the battery storage system into the trading front-of-the-meter (FTM). A distinction is made between flexibility marketing (day-ahead and intraday market) and grid services (FCR, aFCR).

Direct connection to trading:

With the energy management system used, battery storage systems above a certain size can be connected directly to a virtual power plant (VPP) for marketing. This generally makes sense from a battery storage capacity of at least 1 MW. In practice, this direct connection is primarily used for standalone battery storage projects and, in future, also for battery storage projects as part of “co-location” (e.g. PV+battery hybrid).

Trading connection via a “virtual subpool”:

The EMS platform enables the customer to participate in trading via a virtual subpool. Here, a large number of battery storage systems are bundled technologically and administratively and made available for marketing. This option is particularly suitable for customers for whom a direct connection is not practical. It also offers the possibility for battery storage systems that would like to participate in flexibility marketing in addition to a local use case – this is the only practicable solution, particularly in conjunction with dynamic optimization.

The following diagram shows an example of a peak shaving use case in combination with balancing power marketing (grid services).

Would you like to find out more about our product and the potential of your battery storage project?

In just a few clicks, we analyze your potential and the implementation options. You will immediately receive a customized offer from us.

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