Meeting the Critical Needs of the Energy Industry

Author:
Fuminori Takeuchi, Product Marketing Manager – Relay, OMRON

Date
11/20/2024

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The Role of High-Capacity Relays

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Figure 1: OMRON Power Relay Line Up

­The energy industry is navigating a transformative phase characterized by pressing needs that are reshaping its operational strategies. A primary requirement is the demand for high-voltage, high-capacity relays, driven by the increasing use of high-voltage, high-capacity batteries across various applications, including electric vehicles and renewable energy systems. These batteries require robust management systems capable of meeting high-power demands while ensuring operational safety. By optimizing energy use, these products minimize environmental impact and bolster sustainability efforts.

One significant challenge facing the energy market is the stable energization and interruption of DC loads, particularly under conditions of vibration and shock. This challenge directly impacts the safety and reliability of electric vehicles, underscoring the importance of dependable relay systems. Additionally, there is a pressing need to eliminate wasteful power consumption, which not only inflates operational costs but also undermines environmental sustainability. Utilizing products that are energy efficient can result in substantial cost savings for both consumers and businesses by decreasing the energy input required for operations. 

The focus on environmental sustainability in technology is essential to the growth and advance of innovative designs and applications. As organizations strive for carbon neutrality and enhanced energy efficiency, transitioning from traditional energy sources to renewables—such as wind, solar, and hydroelectric power—becomes imperative. Efficient energy storage solutions must be developed to ensure a stable and reliable energy supply. This reliability hinges on the ability of components to withstand the extreme conditions associated with high voltages and large currents, safeguarding systems against potential short circuits.

Miniaturization of safety components, such as DC relays and microswitches, is essential for optimizing performance and efficiency in energy applications. Smaller components facilitate the integration of high-voltage, high-capacity batteries, leading to more efficient use of space and resources. This paves the way for compact power systems that reduce overall energy consumption without sacrificing performance.

These challenges are pivotal in dictating the strategic direction of the energy industry, influencing everything from product design and system integration to regulatory compliance and market positioning. As the industry continues to evolve, addressing these issues will be pivotal for companies aiming to lead in the transition towards a more sustainable and efficient energy landscape.

Shaping the Future 2030

OMRON's "Shaping the Future 2030" (SF2030) initiative is rooted in the company’s philosophy of "innovation driven by social needs” and emphasizes the expansion and efficient utilization of renewable energy sources. This initiative is part of OMRON's broader commitment to achieving carbon neutrality and enhancing productivity at production sites, while also tackling climate change and other significant social challenges. By 2030, OMRON aims to transform the semiconductor manufacturing process through advanced PCB inspection solutions and increase energy productivity. OMRON’s SF2030 addresses critical global challenges such as aging populations, climate change, and economic disparities, ensuring that business growth is aligned with sustainable practices. OMRON's commitment to sustainability is evident in its electronic component products and solutions. Offering products such as high-capacity and power relays, which are essential for clean energy-related equipment. Additionally, OMRON offers low power consumption drive relays and sensors designed to help decarbonize customer products. The company also provides components and services for clean energy systems, EV-related systems, and energy-saving solutions for residential and commercial buildings. These products play a role in helping achieve carbon neutrality and promote sustainability across various industries.

The OMRON G9EK High-Capacity DC Relay

OMRON's commitment to addressing the challenges in the energy industry is evident through their innovative approaches and technological advancements, exemplified by its G9EK High-Capacity DC Relay. The company tackles the issue of high energy consumption, which is prevalent in the manufacturing of high-capacity DC relays, by implementing proprietary gasless switching technology. The innovative approach not only enhances the performance and reliability of the relays but also significantly reduces their environmental impact, aligning with global trends towards sustainability. This technology reduces energy consumption for production by up to 30% compared to previous models.* (See Figure 1).

The G9EK is a high-capacity DC relay developed by OMRON, designed to meet the needs within the energy industry, particularly those related to energy efficiency, reliability, and environmental sustainability. The G9EK relay can handle high-voltage and high-capacity requirements—up to 500 VDC and 120 A—making it an ideal choice for critical applications in electric vehicles, renewable energy, and industrial automation. Its bidirectional switching capability enhances power management and facilitates the integration of renewable energy sources into the grid.

What sets the G9EK apart is its compact size and robust structure. It is designed to be 80% smaller than other contractors with similar capacity*, allowing for seamless integration into space-constrained applications without compromising performance. The innovative gasless switching technology effectively interrupts DC circuit without the need for gas, ensuring both safety and reliability.

The relay's sealed structure is a significant advancement towards carbon neutrality. The relay design eliminates the need for special parts that are typically required to handle gases, thereby reducing complexity and maintenance costs. This aspect is particularly beneficial in reducing the lifecycle cost of energy systems and enhancing their sustainability. By minimizing the energy required for operation, the G9EK-1 aligns with global environmental standards, promoting energy efficiency and reducing the carbon footprint of electrical systems. Furthermore, optimization of the magnetic circuit design enhances the relay's durability and reliability, especially in terms of resistance to vibration and impact. This makes the G9EK-1 exceptionally suitable for use in mobility applications where equipment must withstand dynamic and challenging conditions.

Each product undergoes rigorous simulation and validation processes to preempt potential issues and ensure that every component performs reliably under real-world conditions. OMRON's design philosophy prioritizes safety, with features that optimize arc discharge control—critical for maintaining performance in high-capacity switching operations. The relay's robust current-carrying performance and resistance to short circuits exemplify its reliability. Built to withstand severe conditions, including vibrations and impacts, the G9EK ensures consistent performance across diverse applications. (See figure 2).

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Figures 2a & 2b: OMRON G9EK relay structural design combines several indispensable arc interrupting elements. Arc discharge is a type of electrical discharge that occurs when a current flows through an air gap or other non-conductive medium between two electrodes. This discharge can generate significant heat and light, and in the context of relays, it can cause damage to the contacts, leading to potential failure in interrupting the circuit. Proper precautions and regular maintenance are necessary to manage the effects of arc discharge in high-voltage and high-current applications

Summary

OMRON is making significant strides in contributing to the energy market through its initiatives and product offerings. By focusing on advanced technology and environmental impact, alongside safety and adaptability, OMRON’s G9EK relay is positioned to meet the evolving demands of the energy sector. This relay represents a significant advancement in relay technology, combining high-capacity and bidirectional switching capabilities with a compact, durable design. Its innovative features not only enhance performance and reliability but also align with global sustainability goals. The G9EK high-capacity DC relay exemplifies OMRON's commitment to energy efficiency and sustainability, significantly reducing energy consumption and supporting the broader goal of decarbonization. Its application in electric vehicles and other high-voltage systems underscores its role in advancing green technologies and contributing to a more sustainable society.

By enhancing energy efficiency, we can use less energy to perform the same tasks, which decreases overall power consumption and lessens environmental impact. This is especially important within energy-driven industries like manufacturing or electrical vehicles, where improved energy efficiency can significantly reduce the high power required. Additionally, energy efficiency leads to cost savings for both businesses and consumers by lowering production costs and the need for larger components with applications.

Whether in industrial settings, renewable energy systems, or advanced transportation solutions, the G9EK relay offers an efficient and sustainable switching solution for designers and engineers seeking to navigate and shape the future of energy management.

*OMRON’s data as of October 2024.

 

OMRON

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