Having worked in power quality equipment for nearly a decade—from early basic reactive power compensation devices to the widespread adoption of active harmonic filters across diverse distribution systems—we have witnessed harmonic mitigation evolve from an industrial exclusivity into a standard requirement across multiple scenarios, and accumulated extensive front-line experience working with customers from different industries. From a practitioner's perspective, this article systematically reviews the product portfolio, technology accumulation, compliance and measured performance, and our outlook for the industry in 2026.
Industry Application Boundaries Keep Expanding
Throughout 2026, the application boundaries of active harmonic filters continue to broaden. Harmonic mitigation is no longer confined to industrial manufacturing scenarios—data centers, telecom base stations, hospitals, and outdoor engineering, in short any scenario with demanding power stability requirements, have begun to incorporate harmonic mitigation into the standard considerations of their distribution systems.
About Us
Shenzhen Qidian New Energy Technology Co., Ltd. was established in 2015 as a professional R&D and manufacturing enterprise dedicated to power quality products and solutions. The company has long been rooted in power electronics, with core business covering APF active harmonic filtering, SVG static var compensation, and other power quality equipment, while providing tailored power quality optimization solutions for customers across industries.
Complete Active Harmonic Filter Product Portfolio
Spanning differentiated operating conditions and scenarios, we have built a complete product matrix covering multiple application domains:
Industrial Active Harmonic Filter
For industrial manufacturing and energy & power sectors, optimized for harmonic interference caused by variable-frequency drives and high-power motors, adapted to complex industrial distribution environments and harmonic fluctuations from frequent equipment start-stop.
Retrofit Active Harmonic Filter
Designed for legacy plant power quality upgrades, requiring no change to the original switchgear layout, supporting flexible installation and compatible with 50Hz/60Hz as well as 208V–480V, three-phase three-wire / four-wire systems—no major rewiring of the existing lines.
Data Center Active Harmonic Filter
Targets the harmonics generated by high-density server clusters for precise compensation, preventing harmonic interference with stable server operation and reducing risks of data transmission lag and storage anomalies caused by power quality issues.
Telecom Active Harmonic Filter
Adapted to telecom operation scenarios, provides targeted mitigation for harmonics from base station power modules, ensures stability of the supply link, and reduces premature wear of power modules caused by harmonics.
Hospital Active Harmonic Filter
For medical service scenarios, optimized for the power quality demands of various high-precision medical devices, preventing harmonics from interfering with detection accuracy and ensuring stable power supply during diagnosis and treatment.
Compact Active Harmonic Filter
Meets harmonic mitigation needs of small commercial sites, compact and easy to install, delivering mitigation within limited distribution space while improving energy efficiency.
High-Power Active Harmonic Filter
For high-power equipment harmonic mitigation in factories and energy & power systems, efficiently compensating large-magnitude harmonics from high-power loads under continuous heavy-duty operation.
High-Protection Active Harmonic Filter
Designed for outdoor, high-dust and high-humidity engineering scenarios; PCBs are fully potted for protection against dust and moisture, maintaining stable operation under harsh conditions.
Core Technology Accumulation: Multiple Granted Patents
Building power electronics equipment without solid technology patents makes it easy to fail under complex field conditions. We have successively obtained multiple granted patents covering circuit design, control methods, and structural optimization, and maintain close technical cooperation with Harbin Institute of Technology and the University of Macau to continuously track the frontier of power electronics.
| Patent Name | Patent No. |
|---|---|
| SICMOS driving circuit and electronic equipment | CN222127588U |
| Distributed control method for unbalanced voltage compensation in isolated-grid AC microgrids | CN114243783B |
| Resonance suppression method for reactive power generators | CN118487279B |
| Parallel current-sharing device based on IGBT's own parameter characteristics | CN222814372U |
| Active harmonic filter mechanism | CN222852255U |
| APF based on parallel connection of multiple discrete IGBTs | CN210780598U |
| Aging cabinet with SVG module fixture testing function | CN22268956U |
Product Compliance and Measured Performance
For power-related equipment, compliance is the baseline. The full product series has passed CQC (China Quality Certification Center) mandatory certification and EU CE safety certification, with technical indicators conforming to relevant national standards such as GB/T 15576-2008. Key measured performance includes:
- The full series adopts Infineon IGBT devices; third-party on-site acceptance tests show operating efficiency about 1.5% higher than conventional products, and SiC-based products achieve a measured peak efficiency of 99%.
- Supports open-loop and closed-loop parallel operation on both source and load sides, allowing flexible adjustment of installation position according to the field distribution layout.
- A patented "smart coupling" resonance suppression design effectively reduces the probability of system resonance.
- Foolproof wiring design reduces on-site wiring errors and simplifies commissioning.
- Fully potted PCBs resist dust, moisture, and corrosive gases.
- The full series reserves 4G/WiFi expansion interfaces, supporting remote commissioning and remote monitoring.
Full-Process Service Support
We have established technical service bases in Guangdong, Zhejiang, Jiangsu, Beijing, Henan, Hebei, Shandong, Shenyang, Hunan, Hubei, and Kunming, covering most regions in China. Differentiated support is provided for different project types:
- Standard warranty: 18 months from factory shipment or 12 months from energization (whichever comes first); extended warranty negotiable for special needs.
- New projects: collaborate with design institutes to provide professional design and selection advice based on actual distribution parameters and load types.
- Retrofit projects: technicians first conduct on-site surveys to identify existing harmonic conditions, then propose a suitable retrofit plan.
- Distributors / integrators: stable product supply and customized adjustments, jointly optimizing the supply chain.
- Engineering companies / general contractors / panel builders: technical documentation and product support coordinated with project schedules to meet configuration requirements.
Manufacturing and Delivery Capability
We operate a 2,300 m² self-owned production plant with a complete in-house production line—from component procurement, SMT soldering, final commissioning, to burn-in testing, all completed within our own facility. Key capabilities and specifications:
- Self-developed aging cabinet with SVG module fixture testing function (patent CN22268956U), ensuring every unit undergoes complete burn-in testing before shipment.
- AHF power range: 5A–200A; SVG reactive power compensation: 10Kvar–150Kvar.
- Unit heights: 1U, 2U, 3U, 4U, adaptable to different switchgear sizes.
- Products sold to over 10 countries worldwide, with multilingual interfaces for convenient overseas technical support.
Industry Ecosystem and Peers
Besides us, there are many niche companies in China's AHF industry, each accumulating distinctive strengths in their focused tracks: some focus on regional markets with rapid on-site response; some specialize in customized development for specific verticals; others lead with cost-effective standardized products. All market players keep deepening their efforts, jointly advancing the overall progress of harmonic mitigation technology.
Our Principles
- Customer First: all product iteration and service optimization revolve around customer satisfaction; we respond and handle feedback promptly.
- Create Value for Customers: technology innovation is centered on delivering real value, avoiding flashy useless features.
- Open to Learning: continuously exchange with universities and industry partners, absorbing advanced ideas without complacency.
- Transparent Conduct: published product parameters match actual shipped performance; flat internal management ensures no buck-passing when serving customers.
Industry Outlook for 2026
Our judgment on the industry's subsequent development:
- Application scenarios will further extend downward; more small and medium scenarios previously unaware of harmonics will recognize issues such as equipment loss and cable heating, driving steady market growth.
- Intelligence will keep rising; AHFs with remote monitoring and big-data analytics become mainstream, automatically generating harmonic mitigation optimization reports.
- Customized products for different operating conditions will further segment; the share of general-purpose products will gradually decline.
- We will continue to deepen in power quality, iterating technology and products to provide stable and reliable solutions for more industries.