This paper presents a novel approach to embed power semiconductor devices into a printed circuit ... more This paper presents a novel approach to embed power semiconductor devices into a printed circuit board. Here, IGBTs and diodes with reinforced top side chip contact are used in an IGBT half bridge with 25 A / 1200 V rating. Thermal simulations highlight the improved thermal impedance caused by the reinforced top contact and the benefits of the insulated copper substrate compared to a commercial DBC-based reference module. The fabrication process is discussed in detail and preliminary test results are presented. The results of the thermal characterization support the theoretical considerations.
Abstract. Robots are widely used in manufacturing industries around the world for repetitive jobs... more Abstract. Robots are widely used in manufacturing industries around the world for repetitive jobs that are boring, stressful, dangerous or labor-intensive for humans. However, due to high cost of robots, most of the industries in our country are reluctant to introduce this technology for their production chains. In this project, a low cost prototype industrial robot is introduced that travels between the pre-determined source and the destination in an industrial area with many obstacles. A vision-based novel obstacle avoidance algorithm is developed for mobile robot navigation. The state-of-the-art ultrasonic sensor is applied to detect obstacles during its travels. The proto-type robot is light weight and consumes only 4.5 watt. Moreover, the total implementation cost is only $25-30. With these evaluations, the proto-type discussed forecast a promising future of the application of robotics in our industrial environments.Keywords: Obstacle avoiding robot, destination finding robot, ...
This paper presents a novel approach to embed power semiconductor devices into a printed circuit ... more This paper presents a novel approach to embed power semiconductor devices into a printed circuit board. Here, IGBTs and diodes with reinforced top side chip contact are used in an IGBT half bridge with 25 A / 1200 V rating. Thermal simulations highlight the improved thermal impedance caused by the reinforced top contact and the benefits of the insulated copper substrate compared to a commercial DBC-based reference module. The fabrication process is discussed in detail and preliminary test results are presented. The results of the thermal characterization support the theoretical considerations.
Abstract. Robots are widely used in manufacturing industries around the world for repetitive jobs... more Abstract. Robots are widely used in manufacturing industries around the world for repetitive jobs that are boring, stressful, dangerous or labor-intensive for humans. However, due to high cost of robots, most of the industries in our country are reluctant to introduce this technology for their production chains. In this project, a low cost prototype industrial robot is introduced that travels between the pre-determined source and the destination in an industrial area with many obstacles. A vision-based novel obstacle avoidance algorithm is developed for mobile robot navigation. The state-of-the-art ultrasonic sensor is applied to detect obstacles during its travels. The proto-type robot is light weight and consumes only 4.5 watt. Moreover, the total implementation cost is only $25-30. With these evaluations, the proto-type discussed forecast a promising future of the application of robotics in our industrial environments.Keywords: Obstacle avoiding robot, destination finding robot, ...
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Papers by Dheeman Paul