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Pacific Power AFX series programmable AC/DC power supplies
Arbitrary DC power supplies
The main reason for the use of DC power supplies is often to generate a stable DC voltage, or to supply a stable DC current. Arbitrary DC power supplies however can generate relatively rapid variations of both voltage and current. It is designated an arbitrary DC power supply, if these variations take place within one quadrant (that is, both voltage and current remain positive at all times). TTMS also has two-quadrant and regenerative two-quadrant arbitrary DC power supplies in its product portfolio.
Applications for these power supplies are, for example, simulation of the start pulse in automotive technique, control of a DC-motor with a specific profile to simulate the consumption of an electric car, or simulation of network pollution on a DC network to gather knowledge on the consequences of a voltage dip.
To this purpose, dynamic specifications such as rise and fall times are listed for arbitrary DC power supplies. For some models, even the bandwidth is specified.
For applications with arbitrary DC power supplies, two-quadrant power supplies, and regenerative two-quadrant power supplies, we recommend to contact one of our T&M consultants to discuss the possibilities of your specific application.
Arnold Memelink
ABB
"The ABB Power Grids Jumet organisation is an innovative development and production facility of ABB that manufactures active filters and battery energy storage systems to support a stable grid. To test these systems we have acquired two Cinergia GE/EL +120kVA eplus units capable of doing grid emulation (AC + DC), operating as an electronic load (AC +DC) and being a battery emulator. We have experienced very good support from TTMS in obtaining these two Cinergia units. This included organising an on-site demonstration and supplying loan systems prior to the delivery of our final systems. This way we could start testing as early as possible. TTMS also organised training for the operators from the original manufacturer. This support allowed us to introduce the first battery energy storage systems even prior to the full delivery of the Cinergia systems."
Sasan Rafii-Tabrizi
University of Luxembourg
“At the Energy and Environment department of the Faculty of Science, Technology and Medicine (FSTM) of the University of Luxembourg we do have different research projects related to green energy contributing to the development of eco-cities. As a long-standing partner of our research unit, TT&MS has proven that they are able to answer even the most complex questions in a professional manner. They have shown that they are always up to date with the latest technology and do not spare any effort to look at the application and even the situation on site. The exchange of ideas was always very pleasant and took place quickly. We look forward to further years of fruitful cooperation.”
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