NEI_Autumn_2024 _Digital | Page 30

HYDROGEN

Dynex Semiconductor Ltd Working in Collaboration To Support Renewable Energy Innovations

The Global need for highly reliable and efficient Energy Sources that meet International Carbon Dioxide reduction targets is driving businesses to change their approach when developing systems . The ‘ Old ’ paradigm of a tiered supply structure was not designed to encourage open innovation across the value chain , it was rather designed to minimize costs .

Dynex Semiconductors has developed a working collaboration model where customers can utilize their 60 years of specialist high power semiconductor knowledge , along with a vast array of design , prototyping , testing and in-house manufacturing services , to optimize system performance to meet the very highest efficiency and reliability targets and deliver a superior performance versus value system .

The future of renewable energy systems is highly dependent on the supply and advancements in high power semiconductors . Semiconductors are key in converting the variable output from renewable energy systems into stable and efficient electricity that can be fed into the grid or stored in batteries . Devices like inverters , converters , and rectifiers , which rely on power semiconductors , manage this conversion process .
Several types of semiconductors are used in renewable energy technologies , each with unique properties that make them suitable for various applications like energy conversion , power management , and grid integration . These semiconductors play a critical role in improving the efficiency , performance , and reliability of renewable energy systems .
Bipolar thyristors and Insulated Gate Bipolar Transistors ( IGBTs ) are two important types of high-power semiconductor devices used in renewable energy technology . Both devices are critical in controlling and converting power , enabling efficient energy transfer from renewable sources to the grid or storage systems .
Bipolar thyristors have been used for decades in power electronics and are especially useful in high-power applications like wind energy and HVDC transmission . Thyristors help in converting alternating current ( AC ) from renewable sources into high-voltage direct current ( HVDC ) for transmission and back to AC for grid integration . The high powerhandling capacity of thyristors makes them ideal for these high-voltage , high-current applications .
In wind turbines , thyristors are used in softstart circuits to gradually bring the turbine generator up to speed , preventing large inrush currents that could damage the equipment . Thyristors are also used in power factor correction systems , which ensure that wind turbines deliver consistent and stable power to the grid .
Dynex Thyristors are designed to handle very high voltages and currents , making them suitable for large-scale renewable energy systems .
IGBTs are used extensively in modern renewable energy technologies , especially in systems that require efficient power conversion and control . They are central to solar inverters , which convert the DC power generated by solar panels into AC power for use in homes and feeding into the grid . The high switching speed and efficiency of IGBTs allow for minimal energy loss during conversion , increasing the overall efficiency of solar photovoltaic ( PV ) systems .
Power Supply for Hydrogen Production by Electrolysis
Dynex has delivered their first IGBT based Hydrogen Electrolyser power supply unit . The power supply will be deployed to generate Hydrogen from a dedicated solar farm . The delivery of the power supply is the output of a year of development in enabling technology and capability by Dynex Power Assemblies Engineering team , who have developed the power electronics , control electronics , mechanical design and software .
As a manufacturer of semiconductors and power converters , Dynex is uniquely able to design power assemblies with tailored semiconductors , as well as benefiting from expert knowledge of wear out mechanisms and capability outside of the common operation . Using the latest IGBT AFE ( Active Front End ) technology our supplies are optimised in terms of efficiency , size , power factor correction and harmonic distortion . With a wealth of experience in designing power converters our team of application engineers
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