ProductAugust 16, 2023

Interesting facts about SET Planetary gear stage

Interesting facts about SET Planetary gear stage - Sustainable Energy Technologies

Well-known that SETCON gearbox consists of a differential planetary gear. The Planet carrier with three planets is connected to two Servo motors in order to adjust a variable output speed from 20% to 105%, with an overall efficiency of more than 99%. But how is it working?

  • The Planetary gear ensures the speed control at a Driven Machine (e.g., Pump or Compressor) and, additionally, regulate the torque in the entire drive train.
  • The planet carrier with three planets, is connected via additional gear stages with the two Servo motors operating at variable speeds with up to 2000 rpm, located on the top of the gearbox. By turning the planet carrier in the same direction than the sun gear (connected to the Driven Machine) the speed / power is increased, and the Servos add additional power to the system. The main power flow derives from the Main Motor (connected to the Ring gear) and is superimposed by the Servo power.
  • Additionally, the two Servos can “brake” the system with up to 20% of the system rated power by turning the planet carrier in the opposite direction of the sun gear. The generated energy (Servos work as generators) is fed back to the grid and is consumed by the Main Motor again. Unlike hydraulic systems, where this energy is converted into heat loss, the braking energy is used regeneratively. This results in very high system efficiencies in the partial load range. Watch Animation.
Sustainable Energy Technologies Planetary gear stage animation
  • Important advantages of Planetary gears are the up to 3 times increased torque capacity per-unit-volume (compared to spur gears). This allows a superior compactness of the device.
  • These units are well-known for the exceedingly long service life. Higher stability and resistance to damage of planetary gears is kept thanks to multiple larger contact surfaces and uniform weight distribution in comparison to other gear types.
  • Planetary gears are applied by humans for centuries. Under one of the theories, a similar device was used by Ancient Greeks inside the Antikythera mechanism in the 2nd-3rd centuries BC to calculate the motion of celestial bodies and dates of astronomical events. Later, in XI century Arabian engineer Ibn Khalaf al-Muradi mentioned planetary gears in his instruction on clock designs.
ProductAugust 1, 2023

SET upgraded its manufacturing capabilities

Recently, SET upgraded its production facility in Klagenfurt, Austria, with a new extended lifting crane. Now Sustainable Energy Technologies areas of gearbox assembly and testing cooperate with much higher flexibility. SET goal is to optimize overall product delivery time.

“The new crane that we just installed raises the load capacity of SET manufacturing. I am happy that my team’s work gets faster and easier,” – Johann Kircher, the head of SET manufacturing and assembly, comments.

The modification increases SET production and testing volumes. This guarantees that customers will much more rapidly and efficiently gain control over their industry with the SETCON electro-mechanical variable-speed gearbox.

Keep updated – follow Sustainable Energy Technologies news also on LinkedIn

Sustainable Energy Technologies areas of gearbox assembly and testing cooperate with much higher flexibilit
EventJuly 27, 2023

SET gives me self-confidence: our intern shared his experience on International Intern Day

Today, Sustainable Energy Technologies celebrates Intern Day and reminds to appreciate young generations of technical specialists. SET intern Vi Dong Tran comments how essential this opportunity is:

“Before, I did not have trust to myself, I was afraid not to understand my tasks, but SET team gives me self-confidence. SET taught me their innovative technologies, and now I find it very interesting to be involved in the process, to watch how an idea turns into the impressive machine – SETCON®”.

SET intern remarks that school students should be guided by an example of success:

“For us, it seems that there is a huge time gap for a career decision, but actually time flies so fast by. Therefore, it is so crucial to start my working way already now and in such a company as SET”.

Vi Dong Tran lives and studies in Austria:

“As a local, I am proud that this ground-breaking company SET represents Austria on international market. It is astonishing!”

Keep updated – follow SET news also on LinkedIn

SET Sustainable Energy Technologies intern shared his experience on International #InternDay
EventJuly 18, 2023

Cultural awareness training at SET event

Today SET team appreciates the culture of our customer Petroleum Development Oman (PDO) and tastes the Omani traditional dish – Mishkak – at our SET corporate event. SET Sustainable Energy Technologies GmbH admires the international background of our clients, partners, suppliers, and employees and promotes the cultural awareness.

Mishkak is grilled halal meat served on skewers. It is popular all over Oman as fast street food, especially during celebrations and holidays. And as we have experienced, the Mishkak cooking process is a people-bonding matter. Our team has had much fun grilling it together.

Cultural awareness training on SET event - Sustainable Energy Technologies GmbH