BC9: The new solution for application in Hybrid Systems

The continuous and constant growth in demand for energy has dictated a change in the way resources are utilized, with more and more space being given to so-called renewables. It is in this scenario that one has seen the emergence of hybrid systems, that is to say systems connected (or otherwise) to the grid and capable of combining different conventional and renewable technologies, utilizing essentially three elements:

  • Distributed generation system (deriving from renewable sources and/or conventional sources such as the familiar generating set)
  • Smart control system
  • Storage system

These systems are advantageous in that on the one hand they guarantee stability of the electrical power supply, combining different technologies and consequently reducing the negative aspects of these same technologies when used in isolation (for example, high fuel costs when running only a gen-set, or the fact that solar panels cannot function in the dark), whilst on the other hand they feature lower operating costs and therefore higher levels of efficiency.

Applications for these systems are recommended especially in places that are not connected to the grid or where the cost of electricity is high, and in areas with extensive exposure to sunlight, or wide open spaces suitable for wind turbines. Hybrid systems are most popular in the mining and telecommunications sectors, also in rural areas and on islands.

Always attentive to the demands of the market, Linz Electric has developed a range of solutions capable of meeting each and every kind of requirement.

The generators needed to meet these requirements are no longer normal voltage-controlled machines. In effect, the type of load the generator is required to manage (normally a storage battery pack) needs a smart management system that must take into account the electrochemical technology of the battery, charge profile, constant voltage control, constant current and constant power, also the revolutions of the motor, charging times, ambient temperature, logic procedures and alarms, and of system operation with and without batteries.

All of the functions mentioned above must be combined with a machine having certain bottom line features, namely:

-          quality of d.c. voltage produced, qualified normally in terms of residual a.c. value, or “ripple” (generally less than 1%);

-          simplicity of control;

-          high system efficiency (machine plus control media);

-          compactness;

-          reliability and ease of maintenance;

Our BC9 meets all of these requirements and represents a benchmark for the market.

To optimize the product, we have worked in close synergy with leading producers of storage control systems, known as BMS (Battery Management Systems), with an internationally renowned premier Italian maker of batteries and with manufacturers of complete systems.

Our focus at the outset was on developing a product that would be capable of optimizing costs and minimizing initial financial outlay, thereby responding to the demands of the market. This has the effect of ensuring lower fuel consumption and minimizing maintenance operations, which will be needed on site only in exceptional circumstances.

This achievement has also been made possible through the development of an optimized Lithium-Ion battery management system allowing greater depth of discharge (DOD) and a high number of discharge cycles per single battery.

Hitherto, the market has offered mainly a solution using Permanent Magnet Generator (PMG) alternators, which are advantageously compact, but betray drawbacks connected with fragility of the power electronics utilized, which means high maintenance costs.

Our R&D department, by contrast, has come up with a particularly effective manufacturing solution that provides users with an extremely compact product, having the singular advantage that it makes no use of power electronics, which in turn ensures greater reliability as the electronics effectively utilized are simpler and more economical.

After numerous trials conducted on actual systems, field tests and feedback from the market, we can be certain that the engineering solutions studied and adopted are the best and most effective for systems of this type.

Briefly stated, the main advantages of our system are:

-          lower initial outlay

-          optimized management costs

-          top performance

-          greater reliability

-          efficiency comparable with that of PMG solutions

-          quick return on investment

 

Yet again, Linz Electric has delivered a product characterized by top level performance, superior reliability, compactness and an optimum quality/price ratio, providing customers with a system optimized to meet their particular needs.