adisoft systems GmbH
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Renewable Energy Sources
                      - Erneuerbare Energien

RemoteFlash - Renewable Energy Sources

Wind energy plants are constructed to apply an varitey of cooperating electronic control units that meter, control, diagnose and manage a total system. These controllers are networked devices that exchange data among eachother. In wind energy plants such controllers are part of the operating, run time control, security system, and recording monitoring data.

Measurements of meteorological environment data like wind direction and speed is performed by the module for recording the operation data - hence, electronic controller units are involved. If the wind conditions change this may require changes to the operating mode/program of the whole plant, which includes rotor blade toeing executed by controllers again (here: at the control modul).

Wind energy plants and wind farms are built as complex and modular extendable networks of independently working - but interworking - controller units. Keeping this control unit network operational all the time is - besides rotor blades, pitch system,  gear unit and generator - the most critical component in terms of operation expenses. Therefore, the maintenance of built-in controller units must be considered as most important  for cost-effective operation and prevention of downtimes. Some examples for such controller units show their importance:

  • Steering the electrical network supplies via regen-capable mains inverters
  • electrical load absorption,
  • battery charge regulation,
  • ice detection,
  • heating control,
  • gael-force wind brakes and
  • active extinguisher for vibration absorption.
If service technicians have to come on-site for checks and updates of the electronical controller units, this is a costly experience. Especially in wind energy plant installations one will find long drive times because of the stand-alone character of the geographically spread operations.

Solar energy generating systems and photovoltaics systems are defined as a collection of components which work in cooperation based on an ernergy profile of all interconnected electrical appliances. The various components herein are harmonized and undergo permanent monitoring and on-the-fly tuning in order to achieve maximum rate of capacity utilisation. This holds even more for the late so-called grid-coupled systems.

The meaning of electronic controller units and their orderly operation is quite obvious.
Following the regulations of the "Einspeisegesetz" from 2009 on-demand control of the generated input to the electric supply network is defined. This means, all generating systems with more than 100 KW peak load have to reduce their ouput power during network overload times.
Beside providing power to the electric supply network batteries are used as energy storage. Their charging status is monitored and adjusted by charge controllers. Indepently, dynamic inverter modules are applied for controlling conventional alternating current.
An aspect that becomes more and more importance is theft prevention. Contact surveillances and alarming can be added here.

Typically, such installations are geographically distributed and can only be reached after a longer drive. Thus, technical services on-site generate high costs. The mission-critical operation guarantee for the integrated controller units can be accomplished in a more efficient and less expensive way through remote centralized management.

Biogas / fermentation gas plants are "Oil Ignition - Gas Injection" (OIGI) systems that inject natural gas and diesel for ignition. A complex controller system monitors and directs not only the gas injection but all variables of the diesel-fed system. The  state variables that are considered for this purpose are amon others nozzle pressure, cooling water temperature and pressure, pedal position, gas temperature and pressure. Only the full picture of the system status will generate the best diesel efficiency.

Continuous monitoring and accordingly immediate adjustments receive increasing regard at the operators of biogas plants. Local as well as central observation and documentation of the overall production process from the fermentation process to the gas synthesis are the necessary basis for optimizing control procedures. Especially in modern installations with multiple mixers the complexity of the control procedures is very high:
  • position of the mixers,
  • centerline determination, and
  • height adjustment
serve for optimized spreading of the stirring waves, and finally speeding up the fermenting process..

The freely programmable controls for optimized fuel consumption and emission values are technically very close to the on-board devices used in car monitoring and diagnostics. Thus, they are well-suited for applying RemoteFlash in order to optimize operations and minimize maintenance efforts.

Earth energy systems / ground source heat pumps work like a ground heat exchanger. Cold liquid on the inlet gets heated up from the earth while flowing through a tube system. Again, controller units are applied to adjust the effect depending on temperatures of the air or liquid before and behind the heat exchanger.

The pump will be activated if the temperature shortfalls the defined bottom limit. Then the air will be (pre-) heated in order to prevent  the condenser water in the air ventilation from freezing.
If the upper temperature limit is exceeded the pump is activated as well. During summer operation mode the heat pump extracts heat from the enviroment/building and transfers it to cooler spaces in the ground.

Controller unit tune the performance of the pumps by adjusting the pulse duration modulation depending on the current  power requirements. Controllers do as well handle the safety relief valves in cases of exceeded pressure in the system.

The functionality as well as the efficiency of such pumps can be implemented by means of dynamic control units. The chance to react on changed conditions whenever it is desirable needs to be guaranteed. RemoteFlash can support the operation of such installations by reducing the number of deployments of technical service staff and faster reaction on changed operation conditions as well as attuning the controllers to eachother for smooth interworking from some central service point.

The adisoft solution has been developed during an R&D project called carflash (which has been supported by the German Ministry for Commerce and Technology based on a decision of the German Bundestag). It  enables mobile software distribution to real-time controller networks by means of a special and secure wireless data transmission mechanism.

Concurrent and "silent" software updates can be run and controlled by a central backoffice update unit for all concerned controller devices. No technical service is required on-site any more. The delivery of the software updates is carried out via some available wide-area network, e.g. available cable networks and/or mobile and wireless networks like WiFi, WiMAX, UMTS/HSDPA, GPRS, CDMA2000 or GSM. 

The design of this innovative remote maintenance solution based on mobile networks covers all specific requirements from highly secured data transfer up to real-time flash updates and roll-back to earlier software releases in case of errors during automatic system checks. Optimize your maintenance activities and profit from significant cost reductions.

Tell us how we can assist and support your plans. There is no difference whether we talk about long-term future ideas and currently executed projects. We would be happy to answer your enquiries.