Building Your Success with Our Advanced Brick Making Machines！

Created on 10.12

New Energy Transformer Magnetic Parts | Jishengyuan Dongguan

Company Overview

Who We Are and Our Manufacturing Focus

Dongguan Jishengyuan New Energy Magnetic Parts Co., Ltd. is a dedicated manufacturer of precision magnetic components engineered specifically for the new energy sector. Since its founding in 2009, the company has concentrated on designing and producing customized magnetic parts such as planar transformers, high-frequency transformer cores, and power inductors. Our factory floor combines automated winding, assembly, and testing equipment with rigorous manual inspection stations to ensure every unit meets exacting tolerances. We serve customers across photovoltaic, wind, electric vehicle, and energy storage industries, helping them achieve higher efficiency and smaller form factors. The company’s core strength lies in bridging advanced magnetic material science with practical, high-volume production. As a result, Jishengyuan has become a trusted partner for businesses that demand both innovation and reliability. You can learn more about our journey and capabilities on the About page.

Why Dongguan, China, Is a Strategic Supply Base

Dongguan, located in the Pearl River Delta, is one of the world’s most dynamic manufacturing hubs for electronics and precision components. The region offers a mature supply chain for magnetic materials, copper wire, insulation films, and ferrite cores, which drastically shortens lead times. Skilled labor and engineering talent are abundant, thanks to decades of electronics manufacturing history. Logistics infrastructure, including ports and airports, enables efficient global shipping to North America, Europe, and Asia. Moreover, the local ecosystem supports rapid prototyping and design iteration, which is critical for custom magnetic assemblies. By operating in Dongguan, Jishengyuan can maintain competitive pricing without sacrificing quality or responsiveness. This strategic location also allows us to collaborate closely with material suppliers on next-generation amorphous and nanocrystalline alloys.

Commitment to New Energy Magnetic Solutions

Our commitment goes beyond simply supplying parts; we aim to be a technical partner in your new energy transformer projects. The engineering team at Jishengyuan continuously invests in research to improve core loss, thermal performance, and electromagnetic interference suppression. We understand that solar inverters, EV chargers, and battery storage systems operate under harsh conditions, so we design magnetic components that endure high temperatures and frequent power cycling. Every product family, from high-frequency transformer cores to custom inductors, is developed with lifecycle cost and energy efficiency in mind. We also prioritize sustainable manufacturing practices, reducing waste and energy consumption in our own operations. This dedication has earned us long-term relationships with OEMs and Tier 1 suppliers worldwide. Explore our full range on the Products page.

What Is a New Energy Transformer?

Role in Solar, Wind, EV, Energy Storage, and Charging Systems

A new energy transformer is a specialized magnetic device that steps up or steps down voltage while isolating circuits in renewable power systems. In solar photovoltaic inverters, it converts low DC voltage from panels into grid-compatible AC, often operating at high switching frequencies to reduce size and weight. Wind power converters rely on robust transformers to handle variable input and harsh environmental conditions. Electric vehicle onboard chargers use compact transformers to safely charge traction batteries from AC mains, requiring high isolation and efficiency. Battery energy storage systems employ transformers for bidirectional power flow, enabling charging and discharging with minimal losses. Fast EV charging stations need transformers that can handle high power densities and rapid thermal cycling. In all these applications, the magnetic parts inside the transformer directly determine efficiency, reliability, and service life.

Key Performance Requirements: Efficiency, Thermal Stability, and EMI Control

Modern new energy transformers must achieve efficiencies often exceeding 98% to minimize wasted energy and heat. Thermal stability is equally critical, as components may operate continuously at ambient temperatures above 60°C or under sudden load surges. Magnetic cores must maintain high permeability and low core loss across a wide frequency range, from a few kilohertz to several hundred kilohertz. Electromagnetic interference (EMI) control is another non-negotiable requirement, especially in EV and medical applications where noise can disrupt sensitive electronics. Shielding and careful winding geometry help suppress both conducted and radiated emissions. Mechanical ruggedness, including resistance to vibration and thermal shock, ensures long-term reliability in mobile or outdoor installations. Jishengyuan addresses these demands through material selection, precision manufacturing, and extensive validation testing.

Core Magnetic Parts for New Energy Transformers

High-Frequency Transformer Cores

High-frequency transformer cores are the heart of compact, efficient power conversion in new energy systems. These cores are typically made from ferrite, iron powder, or advanced alloys that exhibit low hysteresis and eddy current losses at elevated frequencies. Operating at 20 kHz to 500 kHz allows designers to shrink transformer size dramatically, which is essential for onboard chargers and DC-DC converters. Material grade, core shape (such as E, ER, PQ, or planar), and gap design all influence saturation flux density and thermal behavior. Jishengyuan produces high-frequency cores with tight dimensional tolerances to ensure consistent inductance and coupling. We also offer custom geometries that optimize winding window area and minimize leakage inductance. Whether you need a standard ferrite core or a custom-shaped component, our engineering team can match the right core to your electrical and mechanical constraints.

Amorphous and Nanocrystalline Cores

Amorphous and nanocrystalline cores deliver superior magnetic performance compared to traditional silicon steel, especially in high-efficiency and high-frequency applications. Amorphous cores feature a non-crystalline atomic structure that reduces core loss by up to 70% compared to conventional materials. Nanocrystalline cores go further, offering high saturation flux density, excellent thermal stability, and low magnetostriction, which minimizes audible noise. These cores are ideal for solar inverters, wind converters, and energy storage systems where efficiency and compactness are paramount. They also excel in common-mode chokes, helping to meet stringent EMI regulations. Jishengyuan sources high-quality amorphous and nanocrystalline ribbons and processes them into toroidal, cut, or custom shapes. We can tailor permeability and core loss to match your specific frequency and temperature profile, ensuring optimal performance.

Shielding, Inductors, and Custom Magnetic Assemblies

Beyond cores and transformers, Jishengyuan supplies shielding components, power inductors, and fully custom magnetic assemblies. Shielding is critical for containing magnetic fields, reducing EMI, and protecting nearby sensitive circuits in dense electronic packages. Our shielding solutions include foil, tape, and molded shapes that can be integrated directly into your transformer or inductor. Power inductors are used for filtering, energy storage, and power factor correction in inverters and chargers. We design inductors with a range of core materials, winding configurations, and encapsulation options to meet thermal and mechanical requirements. Custom magnetic assemblies combine cores, windings, insulation, and mounting hardware into a single plug-and-play module, reducing your assembly time and supply chain complexity. Every custom project benefits from our rapid prototyping and design-for-manufacture expertise.

Jishengyuan Product Advantages and Competitiveness

High Saturation Flux and Low Core Loss

Jishengyuan’s magnetic parts are engineered to achieve high saturation flux density, allowing them to handle large currents without saturating prematurely. This is particularly important in fast EV charging and battery storage systems where power spikes are common. Simultaneously, our cores exhibit low core loss, which translates directly into higher efficiency and less waste heat. We carefully select and process materials to balance these two often-competing properties. Our nanocrystalline cores, for example, offer saturation flux densities above 1.2 T while maintaining very low losses at high frequencies. By optimizing the core geometry and annealing process, we help customers meet stringent efficiency standards such as 80 Plus Titanium. The result is a magnetic component that runs cooler, lasts longer, and reduces total system cost.

Precision Manufacturing and Tight Tolerances

Precision manufacturing is at the core of our value proposition. We use automated winding machines, laser cutting, and CNC grinding to produce magnetic parts with tolerances as tight as ±0.05 mm. Tight tolerances ensure consistent inductance, low leakage inductance, and predictable thermal behavior across production batches. This is critical for high-volume OEMs who cannot afford performance drift from unit to unit. Our in-house tooling and fixture design allow us to maintain precision even for complex geometries. We also implement statistical process control (SPC) on critical dimensions and electrical parameters. As a result, customers experience fewer line rejects and more reliable end products. Whether you need thousands or millions of parts, our manufacturing consistency remains uncompromised.

Custom Design and Rapid Prototyping

Every new energy application has unique constraints, so Jishengyuan offers full custom design and rapid prototyping services. Our engineers work directly with your team to understand electrical specifications, mechanical envelope, thermal limits, and cost targets. We then use finite element analysis (FEA) and magnetic simulation to optimize the core shape, winding, and material selection. Prototypes can be produced within days, allowing you to validate performance quickly. We also provide free samples for qualified projects, enabling you to test our parts in your actual circuit. Our iterative design process ensures that the final production version meets all requirements without surprises. This collaborative approach has helped us solve challenging EMI and thermal issues for customers in the EV and solar industries.

Stable Supply Chain and Competitive Pricing

Jishengyuan maintains a stable and diversified supply chain for critical raw materials like ferrite, amorphous ribbon, copper wire, and insulation. We hold strategic inventory and have qualified multiple suppliers for each material to mitigate risks. Our Dongguan location gives us access to a dense network of local vendors, reducing lead times and logistics costs. Competitive pricing is achieved through automated production, economies of scale, and lean manufacturing practices. We pass these savings to our customers without compromising on quality. Long-term contracts and transparent cost breakdowns help our partners plan their budgets effectively. Even during global supply chain disruptions, our robust planning has kept delivery schedules reliable.

Quality Control and Testing Capabilities

Quality control at Jishengyuan is integrated into every stage of production, from incoming material inspection to final outgoing audits. We use calibrated instruments such as LCR meters, impedance analyzers, and thermal chambers to verify electrical and thermal performance. Core loss is measured using a B-H analyzer across the specified frequency range. We also perform high-potential (hipot) tests, insulation resistance tests, and thermal cycling to ensure safety and durability. Our in-house reliability lab can simulate harsh operating conditions, including high humidity and vibration. Any deviation from specifications triggers a corrective action process with root cause analysis. These rigorous controls ensure that every new energy transformer magnetic part meets or exceeds customer expectations.

Applications Across New Energy Industries

Photovoltaic Inverters

Photovoltaic inverters convert DC power from solar panels into AC for the grid or local loads. They rely on high-frequency transformers and inductors to boost voltage and provide galvanic isolation. Jishengyuan’s low-loss cores help inverters achieve peak efficiencies above 98%, maximizing energy harvest. Our components also contribute to compact designs that reduce installation costs. For string inverters, we offer planar transformers that simplify assembly and improve thermal management. For microinverters, our nanocrystalline cores enable high power density in small enclosures. We understand the unique demands of rooftop and utility-scale solar, and we tailor our magnetic parts accordingly.

Wind Power Converters

Wind power converters must handle variable and often erratic input from turbines, making robust magnetic components essential. Jishengyuan supplies transformers and inductors that withstand wide voltage fluctuations and grid disturbances. Our amorphous cores reduce no-load losses, which is critical for wind farms where turbines operate at partial load for long periods. We also design for high thermal cycling, as nacelle temperatures can vary dramatically. Custom shielding helps meet strict EMI limits imposed by grid codes. With decades of combined engineering experience, we help wind power OEMs improve reliability and reduce maintenance costs. Our parts are used in both onshore and offshore wind converter systems.

Electric Vehicle Onboard Chargers

Onboard chargers (OBCs) in electric vehicles require compact, high-efficiency transformers that operate at high frequencies. Jishengyuan’s planar transformers and high-frequency cores enable OBCs to achieve power densities above 3 kW/L. Our components also meet automotive-grade reliability standards, including AEC-Q200 where applicable. Low leakage inductance reduces voltage spikes, protecting sensitive power semiconductors. Thermal stability ensures safe operation during fast charging and in hot climates. We work closely with automotive Tier 1 suppliers to customize magnetic parts for 6.6 kW, 11 kW, and 22 kW OBC platforms. Our rapid prototyping helps shorten vehicle development cycles.

Battery Energy Storage Systems

Battery energy storage systems (BESS) need transformers and inductors for bidirectional power conversion and grid interconnection. Jishengyuan’s magnetic parts support high round-trip efficiency by minimizing core and copper losses. Our amorphous cores are particularly suited for the DC-DC stages, where low no-load loss is vital. For AC coupling, we provide custom transformers with high isolation and thermal endurance. Shielding components help suppress EMI that could interfere with battery management systems. We also offer integrated magnetic assemblies that reduce footprint and simplify installation. As BESS deployments grow worldwide, our reliable components help stabilize renewable-heavy grids.

Fast EV Charging Stations

Fast EV charging stations demand transformers that can handle high power (150 kW to 350 kW) with minimal losses. Jishengyuan designs high-frequency transformers and inductors for the DC-DC stages of charging modules. Our nanocrystalline cores provide high saturation flux density and low core loss, essential for high-current operation. Thermal management is critical, so we use thermally conductive encapsulants and optimized winding geometries. EMI control is also paramount to avoid interfering with nearby communication systems. We supply magnetic parts that meet the rigorous reliability targets of charging network operators. As EV adoption accelerates, our components help deliver faster, more dependable charging experiences.

How to Choose the Right Magnetic Parts for New Energy Transformers

Material Selection Guide

Choosing the right magnetic material begins with understanding your operating frequency, flux density, and temperature range. Ferrite is cost-effective for frequencies above 100 kHz but has lower saturation flux density. Iron powder cores handle high DC bias but have higher core loss. Amorphous cores offer low loss at medium frequencies, while nanocrystalline cores excel at high frequencies and high temperatures. Jishengyuan’s engineers can help you compare materials using real performance data. We also consider mechanical constraints, such as core shape and mounting. For custom projects, we can prototype multiple material options and measure their performance in your circuit. This data-driven approach ensures you select the optimal material for your application.

Thermal and Frequency Considerations

Thermal management is a major factor because magnetic core loss generates heat, which in turn increases loss and reduces reliability. You must evaluate the expected ambient temperature, cooling method, and thermal resistance of the core-to-ambient path. High-frequency operation reduces core size but increases eddy current and hysteresis losses, so material and geometry must be optimized together. Jishengyuan uses thermal simulations and empirical testing to predict temperature rise. We also offer cores with low temperature coefficients to maintain stable inductance over wide temperature swings. For forced-air or liquid-cooled systems, we can design transformers with integrated thermal pathways. Always consider the worst-case operating conditions, not just nominal ones.

Customization Checklist

When specifying a custom magnetic part, start with your electrical requirements: inductance, current rating, frequency, and isolation voltage. Then define the mechanical envelope: maximum height, footprint, mounting style, and pin configuration. Thermal requirements, including maximum operating temperature and cooling method, should be clearly stated. EMI and safety standards, such as UL, IEC, or CISPR, will dictate shielding and insulation needs. Finally, consider production volume, lead time, and cost targets. Jishengyuan’s customization checklist covers all these points and more. We provide a detailed design review before prototyping to catch potential issues early. Sharing this information upfront accelerates development and ensures a smooth transition to mass production.

Quality Assurance and Compliance

ISO and Industry Standards

Jishengyuan operates a quality management system certified to ISO 9001:2015, with additional compliance to ISO 14001 for environmental management. Our products are designed to meet relevant industry standards, including IEC 61558 for transformers, UL 1446 for insulation systems, and AEC-Q200 for automotive passive components. We also comply with RoHS and REACH directives, ensuring our magnetic parts are free from hazardous substances. For customers in the medical and aerospace sectors, we can support additional testing and documentation. Our quality team stays updated on evolving standards so that your products remain compliant in global markets. You can view our business license and certifications on the A1 page.

In-House Testing and Reliability Validation

Our in-house testing laboratory is equipped to validate electrical, thermal, and mechanical performance. We perform inductance, DC resistance, turns ratio, and hipot tests on 100% of production units for critical applications. Reliability validation includes thermal shock, vibration, humidity, and accelerated life testing. For high-frequency cores, we measure core loss curves and permeability versus temperature. Every test generates traceable data that can be shared with customers for qualification. If a failure occurs, our engineers conduct root cause analysis and implement corrective actions. This closed-loop system ensures continuous improvement and consistent product quality.

Why Partner with Dongguan Jishengyuan?

Engineering Support

Our engineering team provides hands-on support from concept to production. We help you select materials, optimize winding designs, and troubleshoot EMI or thermal issues. With deep experience in new energy applications, we can recommend solutions that balance performance and cost. We also offer design reviews and simulation reports to de-risk your project. Our engineers are available for conference calls and on-site visits when needed. This collaborative approach has helped many customers reduce development time and avoid costly redesigns. Whether you are a startup or a multinational OEM, you get direct access to technical expertise.

OEM and ODM Services

Jishengyuan offers both OEM and ODM services to fit your business model. For OEM, we manufacture to your exact drawings and specifications, with strict confidentiality. For ODM, we can design a magnetic component from scratch based on your performance requirements. We handle everything from material sourcing to final testing and packaging. Our flexible production lines can accommodate low-volume prototypes as well as high-volume runs. We also provide private labeling and custom packaging for your brand. This versatility makes us a single-source partner for many new energy companies.

Global Shipping and After-Sales Support

We ship worldwide from Dongguan, using reliable logistics partners to ensure on-time delivery. Our export team handles all necessary documentation, including commercial invoices, packing lists, and certificates of origin. For urgent orders, we can arrange express air freight. After-sales support includes technical assistance, replacement of defective units, and continuous improvement feedback. We also offer inventory management programs for high-volume customers. Our goal is to be a long-term partner, not just a supplier. Visit our Home page to learn more about our global reach.

Contact Dongguan Jishengyuan New Energy Magnetic Parts Co., Ltd.

Request a Quote and Free Consultation

Ready to discuss your new energy transformer magnetic parts project? Our sales and engineering teams are available to provide a free consultation and detailed quotation. Simply share your specifications, and we will respond within one business day. We can also provide free samples for qualified applications. Contact us via email, phone, or the form on our website. Let us help you achieve higher efficiency, smaller size, and greater reliability in your next design. We look forward to partnering with you.

Download Product Catalog

For a comprehensive overview of our capabilities, download our product catalog from the Technical page. The catalog includes detailed specifications, material properties, and application notes. You can also find technical articles and application guides to assist your design process. If you need a specific datasheet, our team can provide it upon request. We update our catalog regularly to reflect the latest product developments. Explore our resources and discover how Jishengyuan can power your new energy innovations.

Frequently Asked Questions (FAQ)

What types of cores do you offer for new energy transformers?

We offer a wide range of cores, including high-frequency ferrite cores, amorphous cores, nanocrystalline cores, and iron powder cores. Each type is selected based on your operating frequency, power level, and thermal requirements. Our engineering team can help you choose the optimal core for your specific application.

Can you customize magnetic components for my new energy transformer?

Absolutely. Customization is one of our core strengths. We design and manufacture custom transformers, inductors, and magnetic assemblies based on your electrical, mechanical, and thermal specifications. Our rapid prototyping service allows you to test performance before committing to mass production.

What industries use your new energy transformer parts?

Our magnetic parts are used in photovoltaic inverters, wind power converters, electric vehicle onboard chargers, battery energy storage systems, and fast EV charging stations. We also serve medical and automotive electronics customers who require high-reliability magnetic components.

How do you ensure quality and lead time for new energy transformer parts?

We operate an ISO 9001:2015 certified quality management system with in-house testing for electrical, thermal, and reliability performance. Our Dongguan location gives us access to a mature supply chain, allowing us to maintain short lead times even for custom orders. We provide regular production updates and can expedite urgent shipments.

What is the typical lead time for custom magnetic parts?

For prototypes, we can deliver samples within 3-7 days after design approval. Production lead times typically range from 2-4 weeks depending on complexity and order volume. We also offer expedited services for urgent projects. Contact us with your schedule, and we will work to meet it.

Do you provide free samples for testing?

Yes, we offer free samples for qualified new energy transformer projects. You only need to cover the shipping cost. Our team will work with you to select the most suitable sample based on your specifications. This allows you to validate performance in your actual circuit before placing a volume order.

What magnetic materials are best for high-frequency new energy transformers?

For frequencies above 100 kHz, ferrite and nanocrystalline cores are often the best choices. Nanocrystalline cores offer higher saturation flux density and lower core loss at elevated temperatures. Ferrite cores are more cost-effective for moderate power levels. Our engineers can help you compare options using real performance data.

How do you control EMI in new energy transformer magnetic parts?

We use a combination of shielding, optimized winding geometry, and core selection to minimize electromagnetic interference. For critical applications, we can integrate shielding foils or tapes directly into the magnetic assembly. Our testing lab verifies conducted and radiated emissions to help you meet CISPR and other standards.

Can you support high-volume production for new energy transformer parts?

Yes, we have automated production lines and a robust supply chain capable of handling millions of units per year. We use statistical process control to maintain consistency at high volumes. Many of our customers are Tier 1 suppliers and OEMs with demanding volume requirements.

How do I request a quote for new energy transformer magnetic parts?

Simply visit our website and fill out the contact form, or email us with your specifications. Our sales team will respond within one business day with a detailed quotation. For complex projects, we can arrange a technical call with our engineering team to discuss your needs in depth.