Gujing customized UU9.8 common mode inductor solves EMC problems for new energy photovoltaic customers

In the rapid development of the new energy photovoltaic industry, technological innovation and product iteration are constantly changing. However, the electromagnetic compatibility (EMC) issue hidden behind efficient conversion and stable operation has become an insurmountable "invisible barrier" for many enterprise products on the road to going global. Recently, Gujing successfully assisted a well-known new energy photovoltaic enterprise in overcoming the EMC challenge of its new project. This is not only a technological victory, but also a vivid manifestation of Gujing's decades of deep cultivation in the field of inductors, creating value for customers with profound OEM experience and diversified magnetic material technology.

1、 Dilemma: EMC Nightmare, Imported Brands and Multiple Scheme Adjustments Failed

As a leader in the field of new energy, this customer adhered to the ultimate pursuit of quality in the early stage of new project development and selected imported brand surface mount inductors recognized by the industry. However, the EMC testing results of the project have always been unsatisfactory, like an unbreakable curse, seriously hindering the product's launch process.

In order to solve the problem, the customer's R&D team embarked on a long road of debugging and replacement: from the initial surface mount inductor, to the magnetic ring inductor, and then to the rod inductor; During this period, samples from multiple domestic and foreign suppliers were tested. Every adjustment is accompanied by hope, but every test result brings disappointment. The EMC issue is like a 'stubborn disease' that cannot be eradicated. The project plan is constantly consuming time and cost through repeated revisions, and team morale is also greatly affected.

2、 Turning point: Professional insights, deep involvement of the Gujing technical team

When customers were at a loss, they saw our numerous successful cases in the new energy industry, especially in the fields of photovoltaic inverters and energy storage systems, through the official website of Gujing. The professionalism and pertinence presented by these cases gave them new hope, and they immediately contacted Gu Jing proactively.

Unlike the simple mode of receiving sample requirements, the Gujing technical team chose to deeply intervene as soon as they received the consultation. We did not rush to recommend the product, but first had multiple rounds of in-depth communication with the customer's technical manager, comprehensively understanding the entire circuit design, working principle, noise spectrum characteristics, and detailed data of previous failure cases of their product.

After precise technical analysis, the Gu Jing team determined that the root cause of the previous plan's failure was the failure to accurately match the unique noise model of the circuit. Ordinary surface mount, magnetic ring, or rod inductors, when dealing with complex high-frequency and high interference scenarios, either have insufficient saturation current or mismatched frequency characteristics, resulting in greatly reduced filtering effectiveness. We decisively recommend using customized GUU9.8 horizontal common mode inductors (customer board height limit) as the core solution for this.

3、 Breakthrough: Striving for excellence, the "relay race" of two magnetic materials and the perfect compliance with safety regulations

First piece: Material A - Verification direction, first glimmer of hope

Based on preliminary judgment, Gu Jing first provided the customer with GUU9.8 common mode inductor samples using A specific magnetic powder material. The test results are exciting: EMC testing passed in one go! This proves that the analysis direction of the Gujing technology team is completely correct. However, the customer has raised higher requirements: "Our products are mainly targeted at high-end overseas markets and have extremely strict standards for safety certification. We hope that the filtering effect can be stronger and the margin can be more sufficient

4、 Core: Gu Jing Advantage - The perfect integration of brand OEM heritage and magnetic material technology

The success of this case may seem accidental, but in reality it is inevitable. It showcases the unique advantages of Gujing as a senior inductor manufacturer:

1. Advantages of profound brand OEM experience: Gujing has provided inductor OEM and customization services for many well-known domestic and foreign brands for many years, which has enabled us to accumulate a massive application database and problem solutions across industries and multiple scenarios. We are not only selling a component, but also providing a systematic electromagnetic compatibility solution based on rich experience. We can quickly understand the customer's design intent and anticipate potential risks, which is a core capability that starting from scratch does not possess.

2. Diversified magnetic material library and precise selection capability: The soul of inductance lies in the magnetic core. Gujing has established an industry-leading diversified magnetic material system library, with various specifications of magnetic core materials ranging from low frequency to high frequency, from ordinary power to ultra-high permeability. In this case, we were able to quickly switch from material A to a better material B thanks to this powerful reserve. We have a deep understanding of the frequency impedance characteristics, saturation characteristics, temperature stability, and their impact on safety performance of different magnetic materials. Like a "prescription", we can "match" the most suitable magnetic materials for different application scenarios.

3. Customized process implementation capability: With the correct magnetic material, exquisite craftsmanship is also needed to transform it into stable and reliable products. Gujing has mature process experience in winding technology, packaging technology, pin processing, etc., which can ensure the electrical performance consistency and mechanical reliability of each customized inductor, meeting the long-term use requirements of new energy products in complex and harsh environments.

On the technology driven track of new energy, the choice of one component may determine the fate of the entire product. Gujing is not only a manufacturer of inductors, but also a trusted electromagnetic compatibility technology partner around you. We are willing to use our profound OEM experience, extensive magnetic material database, and precise customization capabilities to clear EMC barriers for your products and help your brand steadily advance in the global market.

5、 Case study inspiration: Core technology accumulation, forging customized solution capabilities

The successful solution to the temperature rise problem of the portable coffee machine inductor fully demonstrates the comprehensive strength of Gujing as an inductor manufacturer with profound technical expertise

1. Rapid response and precise diagnosis: able to quickly understand customer pain points and accurately identify the essence of the problem, rather than blindly trying.

2. Advantages in core material technology: Independent laboratories and years of experience in magnetic powder formulation research are the fundamental means of quickly providing targeted material solutions. Different cases and performance requirements require different material systems to support them, and Gujing has accumulated rich databases and practical experience here.

3. Comprehensive technical collaboration: not only solves hardware parameter problems, but also combines software and chip requirements to provide system level optimization suggestions, demonstrating deep technical integration capabilities.

From vacuum cleaners and water pumps to emerging portable coffee machines, the iterative upgrading of customer products relies on the stable and reliable support of core components. Through this successful cooperation, Gujing once again proves its core value of customer-centric and technology driven approach, helping customers overcome technical difficulties and enhance product competitiveness. In today's increasingly intelligent and efficient electrical products, Gujing will continue to rely on its 23 years of brand OEM experience and material research capabilities to provide more professional and accurate customized solutions for inductors and magnetic components to more customers.