Presentation:

 This is an high technology UPS and smart grid Inverter System. It is totally controlled by a 60Mips DSP, presenting very advanced properties, like remote adjustments, calibration. Defect search, monitoring and managemen,t with at the consumer equipments at plain work. Many constituents of this family of UPS is working for years in the field without any human intervention and presenting very high reliability.

Main features:

The highet technological level of the market but besides is simpler and the chipest equipment of its class: Due to technological level and more than 40 Years of experience in the design of such equipments this led to the most cheap equipment of the market. In Asia the people have cheap equipments not due to its technology, but for the salaries of the workers and the prices of the major part of simple components. But the projects mainly of the big equipments in its majority are very complicated and difficult to build. The low cost resides in the fact  of the salaries being very low, that leads to a very low cost of production. The experience demonstrated, that in big equipments that they do not have adequate price, mainly if compared with Brasílian costs.
If is built a most simple equipments, like our solutions, the total cost of our product  is far lower, when compared with the Asian big UPS Systems.

Very high degree of regulation: For UPS, off grid and voltage inverters and other  the output voltage is regulated in RMS value through high performance regulator that works at real time. There are many algorithms of regulation, per phase, keeping constant each phase, three phase simultaneous, whose regulates the average of the RMS values of the  three phases, with harmonic injection to improve power generation and others of equal importance. Additionally for current and bilateral power flow inverters there are current  tracking capabilities in very high speeds, mantaining the power flow as needed. In a third category the software can switch the system from current to voltage inverter, changing the mode of operation in the case of the grid failure.  

Very low output harmonic distortion:Due to the DSP control and the multi point sinusoidal voltage generation, the system presents very low harmonic distortion.

High Reliability due to its simplicity.

Very fast response: For voltage inverters the system employs a quadratic control loop that improves the speed response.

Active parallelism: Paralleled through a electrical pseudo CAN of 1 Megabit in conjunction with a fiber optical connector between constituents of the system. Equalization of real power between power modules in the paralellism. Do not exist any board for parallelism and consequently any critical node that could degenerates the reliability.

Passive parallelism: Master/Slave topologies that employs one control and several power modules. Is usefull for high power UPS or smart grid systems obtained through parallelism of small power modules. Is useful for all systems that uses the concept of power on demand.

Intelligent Power modules. Up to 100Kva employs Intelligent Power Modules that improves a lot the reliability and cost of the system. In a certain sense is impossible to burn the IPM during the production and tests. The gate drives are quite simple and uses two different technologies; one is electrical with optical isolation and another is with fiber optics for high isolation and noise immunity.

Bellow can be seen the 30Kva power stack (Three Phase, Back to Back topology) with two IPM modules installed, two gate drivers (One for the PFC and another for the Inverter), the 3 inductor for the input filter, 3 inductors for the output filter, two boards (bellow of the photo) for the input and output filters capacitors and four Electrolitic capacitors for the DC link. Pratically all the power part of the UPS system is present in this module.

Can be observed in the photo that the inductors, even for 30Kva inverters, are very small. This is due to the technology involved in the design of such magnetic components.

Optimized Cost equipments:

Is a very important part of the system, employing the most modern technology and consequently  leading  to optimum cost equipments.

Small and very simple power supply. It uses an internal battery. The power supply is done with two transistors only and do not uses integrated circuits. Consequently it is very simple, working in 250khz, being very small. Presents very high reliability mainly by its simplicity. Has a internal battery of 12V/9 Ah to keep the monitoring system working for hours.

Low Cost power modules: The power modules are very simple. at powers up to 100 Kva. It uses three Phases back to back topologies. We use a topology for each range of power, but the strategy of the control is the same for all systems.

The magnetic elements are of very high technology and consequently of low cost.

In the inductors of the filters we use powder iron cores that supports very high flux densities (Aprox 10500 Gausses), high Curie temperatures of 500 Celsius , and very low power densities losses up to 300Khz. The project is done carefully to improve efficency. in such way to control all the additional losses due to skin proxitity effect.

The mechanical parts are totally modular and employ hermaphroditic concepts for the simplification of the process and minimization of parts. It was designed for that the relative position of the observer could improve the finishing of the equipment. For instance: the doors do not present bends in the top and in the bottom, minimizing production items and avoiding finishing steps.

All Is manufactured by CAM: In laser cutting technology, CNC Bend technology, Gerber Technology, and and SMD insertion Technology. We supply all files and programs prepared for those activities.