MUMBAI: The Power Transmission & Distribution (PT&D) vertical of Larsen & Toubro has won new orders in the Middle East for expanding and strengthening the electricity grids at high voltage levels.

Saudi Arabia

The different operating regions in Saudi Arabia’s national electricity network are being interconnected through High Voltage Direct Current links that enable exchange of power between regions and enhanced system resilience. L&T has secured orders to establish ±500kV HVDC Transmission Links associated with these interconnections.

L&T has also won orders for three more packages involving two 380kV overhead transmission lines and a bulk supply 380kV Gas Insulated Substation. These elements contribute significantly to the renewable generation interconnection and fortification of the grid.

United Arab Emirates

In Abu Dhabi, L&T has received an order to build two major 400kV Gas Insulated Substations. In addition to civil works, the scope also involves Series Current Limiting Reactors, Auto Transformers, related control, protection, substation monitoring & alarm systems including fault and power quality monitoring, telecommunication systems, and integration with the Load Dispatch Centre. These substations will enhance the power transfer capacity of the electricity grid.

Commenting on the development T. Madhava Das, Whole-Time Director & Senior Executive Vice President (Utilities) – Larsen & Toubro said: “The fortification and modernization of transmission systems is the foremost step in establishing a secure, resilient grid capable of handling variable renewable generation in an evolving energy market. We thank our customers for entrusting these projects with us”.

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This launch reflects our unwavering commitment to innovation, quality, and customer satisfaction. “We believe these products will redefine industry standards, offering our customers solutions that go beyond their expectations,” commented Mr. Neeraj Bisaria, MD & President of Premium Transmission.

“Innovation is at the heart of our journey. With Srijan 3.0, we do not only aim to meet industry needs but to anticipate and exceed them. It’s about crafting solutions that redefine what’s possible, setting new benchmarks in the power transmission industry.” – Mr. Neeraj Bisaria, MD & President, Premium Transmission

Premium Transmission, with a legacy spanning over six decades, has carved a niche in the global power transmission market. Our commitment to excellence is evident in our extensive product range, which includes worm gearboxes, helical gearboxes, planetary gearboxes, geared motors, and fluid couplings.

With a global presence across continents, we serve a diverse range of industries, from automotive to energy. Under our subsidiary, Premium Motion, we’re broadening our horizons. With a strategic focus on research and development, Premium Motion specializes in advanced solutions like slew drives and solar panel cleaning robots. Our vision is to lead the charge in creating innovative solutions that redefine industry standards.

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• Excellent power density and efficiency in an overall system comprising e-motor, power electronics, transmission, and software
• Maximum flexibility thanks to an optimized modular concept with three basic configurations
• Compact design enables resource-saving use of materials
• ZF demonstrates technological leadership through product innovations
• Industry’s highest order backlog for e-drives with a volume of €25 billion

INDIA: Friedrichshafen. ZF presents the latest generation of electric drives for passenger cars and light commercial vehicles. It sets standards through outstanding power density and energy efficiency. ZF achieves this thanks to numerous innovations at both the component and system levels. These include the compact design of the drives, the “discrete approach” in power electronics, and the resource-saving use of materials, which also makes the production of the drives more sustainable. With their modular concept, the new ZF e-drives support automotive manufacturers in customizing the further electrification of their entire model range. For end customers, the new technologies offer higher efficiency, more power, and shorter charging times.

ZF develops and produces technologies for the mobility of the future. Two million e-motors produced and the high-voltage vehicle electric system with 800-volt technology, which will go into series production this year, show: ZF is setting the pace in the dynamic electromobility market and is now further expanding its role as a technology and innovation leader. Proof of the company’s successful transformation is the latest developments that ZF presented to international media in Friedrichshafen on November 21, 2022.

The system approach anticipates market requirements

ZF is already developing its comprehensive product range for pure e-drives with a view to the functions desired by customers and end users. In order to better and faster meet the highly diversified market demand, the Technology Group is now presenting a new generation of electric drives based on a modular overall concept with an electric motor, inverter, transmission, and software. “We are focusing on three basic systems that meet our customers’ main requirements, namely efficiency, performance, and cost, even in the standard version,” explains Markus Schwabe, Product Line Manager of Electrified Powertrain Systems. “On this basis, we can optimally implement further individual customer requirements in e-vehicles of all segments.“

“The great interest of manufacturers in our products in both the passenger car and commercial vehicle sectors is confirmed by our high order backlog in the high-voltage business. With the next generation of electric drives, we are consistently continuing our strategy of developing sustainable and efficient mobility for the future,” explains ZF Board of Management member Stephan von Schuckmann, who is responsible for e-mobility within the Group.

Innovative strength in the system as well as in the components

With the new generation of e-drives, ZF provides fully integrated electric drive systems. With its high level of interface expertise and unique know-how for driving strategies, ZF application engineers can meet customer requirements fully in the best possible way. However, the Group will also offer the innovative components individually, on which its own system solution is based. “Thanks to sophisticated internal interfaces, the new, extremely compact design allows system or component adaptations to be made with little effort. In addition, the design has very high structural rigidity, which enables superior noise behavior,” explains Dr. Otmar Scharrer, Head of Development for Electric Drive Technologies.

The new generation of ZF e-drives will be available on the market as a complete system starting in 2025; ZF will bring individual components into series production earlier. The following innovations at the component level make their contribution to the advanced overall system:

With “discrete package technology”, power electronics manage the balancing act between a high degree of component uniformity and high adaptability. The individualization takes place at the chip level: A discretely structured ZF inverter is built with individual power semiconductor switches. This modularity offers better performance scalability than is possible with complex power modules. In addition, ZF’s “discrete package technology” requires fewer types of components than using conventional power modules. “With our new approach to power electronics, we can serve different market requirements faster and more precisely,” explains Scharrer.

With a new, highly integrated e-motor, ZF once again increases the power density compared to the technology currently available in the market. A new cooling concept and a new winding technology play a decisive role here. Thanks to the new cooling concept, ZF allows oil to flow directly around the copper rods – exactly at the point where most heat is generated during operation. Such highly efficient cooling significantly increases performance with the same weight and installation space. The continuous power of the electric motor is increased to up to 85 percent of the peak power. In addition, the use of heavy rare earth can be largely dispensed with, and the e-motor can thus be produced more sustainably. The braided winding technology developed by ZF, a further development of the “hairpin” winding, enables a total of 10 percent less installation space. The winding head alone is around 50 percent smaller than with conventional approaches. This means that around 10 percent less raw material is processed.

With its new coaxial reduction gearbox, ZF transfers its world-leading know-how in planetary gearboxes to the next generation of electric drives. Two integrated planetary gears not only generate the desired axle ratio but also include the fully integrated differential function. Compared to common offset concepts, the new solution reduces weight and installation space requirements without compromising efficiency, noise, and vibration.

High-voltage converters (DC-DC converters) play a central role in fuel cell-powered electric drives. They compensate for the low output voltage and the strong voltage drop at a high load of the fuel cells. The new high-voltage converter from the ZF power electronics platform, which was developed for passenger car and commercial vehicle applications, has a top value of 99.6 percent in terms of efficiency.

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