Cooling IGBTs without maintenance and with maximum reliability
At ALAZ ARIMA, we constantly work to develop efficient and reliable cooling solutions for power electronics, tailored to the needs of each application. Choosing the right cooling system is key to ensuring thermal reliability, optimizing performance, and reducing maintenance.
Comparative of cooling technologies for power electronics
Next, we analyze the main technologies used in the cooling of IGBTs, diodes, and other power semiconductors:
Aluminum heat sink
Lightweight and highly reliable.
Its cooling capacity is limited for high-power-density applications.
Copper heat sink
It offers higher thermal performance than aluminum.
However, its weight and cost can be disadvantages in projects where structural efficiency is a priority.
Liquid cooling (with pumping)
Excellent heat dissipation performance.
Requires pumps, valves, and regular maintenance, as well as additional electrical consumption.
Phase change refrigeration (thermosyphon)
Passive system with no moving parts and no power consumption.
Offers a lifespan of over 30 years, with adaptive thermal resistance.
Maintains the IGBT’s rated power even at high ambient temperatures.
Results obtained with thermosyphon technology
Tests carried out at ALAZ ARIMA show that phase change cooling systems achieve superior thermal performance compared to traditional solutions:
Lower temperature and dispersion in IGBTs.
Optimal performance across the entire operating range.
Lower risk of condensation, thanks to its behavior as a heat diode.
Total absence of maintenance, which increases long-term reliability.
Conclusion: Innovation is also about simplification
Thermosyphon cooling represents a technological advancement in the field of thermal management for power electronics.
It reduces complexity, increases reliability, and ensures stable operation, even under demanding environmental conditions.
At ALAZ ARIMA, we continue to focus on passive and sustainable cooling solutions designed to maximize efficiency and minimize maintenance.
✅ Innovation doesn’t always mean more complexity: sometimes, it means simplification.
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