PQ Transformers: Reshaping the New Paradigm of Power Transmission in the Industrial Sector with High Power Density and Stability

September 22, 2025 · Nanjing — As the "energy hub" for power transmission and signal conversion in industrial equipment, the performance of transformers directly determines production efficiency and equipment operational reliability. In recent years, PQ Transformers (PQ - Type Transformers) have seen a continuous surge in demand across fields like industrial automation, new energy equipment, and precision manufacturing, thanks to their three core advantages: high power density, low electromagnetic loss, and compact structure. They have become a key support for driving the upgrading of industrial equipment towards "miniaturization, high efficiency, and energy saving", injecting strong momentum into the high-quality development of industries.

Focusing on Core Scenarios to Solve Pain Points in Industrial Applications.

In the current diversified development of the industrial field, different scenarios have differentiated performance requirements for transformers. PQ Transformers precisely match scenario characteristics, solve pain points such as large volume, high loss, and poor adaptability of traditional transformers in a targeted manner, and provide customized power solutions for equipment upgrading in various industries.

Empowering the Photovoltaic Industry to Boost the Efficiency of Distributed Power Generation.

With the global energy structure transitioning to clean and low-carbon, distributed photovoltaic power generation, especially the residential PV market, has witnessed explosive growth. Micro-inverters, as the "core conversion unit" of PV systems, put forward higher requirements for the high-frequency characteristics and energy efficiency performance of transformers. In the mainstream circuit topology of micro-inverters, whether it is the interleaved flyback scheme or the full-bridge phase-shifted forward scheme, PQ series transformers play an indispensable role.

Take the industry benchmark product —— the PQ34 high-frequency transformer series from Sunlord Electronics as an example. This product is tailor-made for residential PV micro-inverters and adopts independently developed wide-frequency, wide-temperature, and low-loss magnetic materials. It can operate stably in the wide temperature range of -40℃ to 125℃, effectively coping with complex outdoor climatic environments. Through the optimization of magnetic core structure and the upgrading of coil winding technology, its overall circuit conversion efficiency exceeds 96.5%, reducing energy consumption by more than 15% compared with traditional transformers. A single micro-inverter can save about 200 kWh of electricity annually, bringing significant economic benefits and environmental value to residential PV users.

Assisting the Upgrading of Electric Vehicles and Accelerating the Implementation of High-Voltage Fast Charging Technology

In the context of the rapid development of the electric vehicle industry, "slow charging speed and short driving range" are still key bottlenecks restricting user experience, and the charging system adapted to the 800V high-voltage platform has become the core direction to solve this problem. PQ series transformers, with their high-frequency characteristics and high power density advantages, have become the "performance leader" of high-voltage fast charging systems.

Through the iteration of magnetic core materials (such as the use of nanocrystalline alloy magnetic cores) and the optimization of electromagnetic structure, PQ series transformers can achieve high-frequency switching operations above 50kHz. In the 800V high-voltage platform charging system, they can increase the charging efficiency to more than 97%. With intelligent power regulation technology, it can become a reality for electric vehicles to charge for 10 minutes and have a driving range of 400 kilometers. At the same time, their compact structural design (the volume is reduced by 30% compared with traditional transformers) can effectively adapt to the narrow installation space in the vehicle, help the integrated layout of the charging system, and lay a foundation for the lightweight and high-performance development of electric vehicles.

In the future, with the deep integration of Industry 4.0 and the new energy industry, PQ transformers will continue to iterate and upgrade, making continuous breakthroughs in high frequency, modularization, and intelligence. They will provide efficient and reliable power transmission solutions for more industrial scenarios, further promoting the green and low-carbon transformation and high-quality development of the global industrial field.