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SIC AHF

SiC APFs have a significantly higher switching frequency than IGBT solutions, resulting in faster dynamic response, more accurate capture of high-frequency harmonics, and further reduced compensation delay. The extremely low conduction and switching losses of SiC devices lead to higher overall APF efficiency, smaller size, and significant energy savings. They also offer stronger high-voltage and high-current withstand capabilities, superior long-term operational stability and reliability, making them suitable for higher power and more complex power quality management scenarios.

Your Professional SIC AHF Supplier！

Leonhard (Shanghai) Electricity Co., Ltd. (LEONHARD) established in 2017, is a high-tech enterprise in the field of power quality, specializing in modern, professional, and intelligent high-quality products and services.As a pioneer and leader in power quality solutions, LEONHARD specializes in R&D, production, and sale of Active Harmonic Filter, Static Var Generator, Hybrid Var Compensator System,Dynamic Voltage Restorer,VFD DC Link System,Unified Power Quality Conditioner.

why choose us

Professional Team

Leonhard is the first company in China to apply SiC MOSFET to the power quality industry. It has advanced manufacturing equipment and a professional R&D team. Through continuous improvement and R&D, its SiC series products have now reached the third generation.

Our Certifications

Our products are backed by CE certification, patents, and third-party testing reports. With successful projects across multiple international markets, we understand global standards and application requirements.

Sales Market

Our power quality products have been widely used in Poland, Mexico, Belarus, Cambodia, Thailand, Vietnam, Dortmund and other countries.

Our Service

We provide end-to-end service from pre-sales system design to installation, commissioning, and after-sales support. With 24/7 technical assistance and regular maintenance services, we help ensure stable system operation over time.

Product Specification

We offers the following product specifications：

Electrical parameters
Wiring method	Three-phase three-wire, three-phase four-wire
Operating voltage	380V/220V±20%
Operating frequency	50/60Hz, ±10%
Product specifications	30A, 50A, 75A, 100A, 150A
Current transformer specifications	50:5 ~ 20000:5, 50:1~20000:1
Noise	＜65dB
Technical features
Switching devices	SiC Mosfet
Switching frequency	>100kHz
Heat dissipation methods	Intelligent air cooling
Heat dissipation control	Adaptive fan speed adjustment
Protection functions	Output overcurrent protection, output current limiting protection, over-temperature protection, DC bus overvoltage protection, AC input undervoltage protection, AC input overvoltage protection, control system fault protection, main circuit component damage and disconnection protection
Compensation performance
Harmonic filtering rate	＞97%
Overall efficiency	≥99%
Active power loss	＜1%
Harmonic filtering range	Harmonics from 2nd to 50th can be individually controlled and configured.
Total response time	＜5ms
Resonance suppression	Active inhibition
Display Interface
Display screen	7-foot full-color touchscreen
Language	Chinese, English, and customizable languages.
Battery display	Displays data including distortion rate, power factor, power, voltage, and current.
Communication interface and protocol type	RS485, TCP/IP, Modbus protocols, and 4G long-distance data transmission.
Environmental conditions
Operating temperature	-25℃~+50℃
Relative humidity	<95%, no condensation
Altitude	<5000 meters (above 1000 meters, capacity decreases by 1% for every additional 100 meters)
Others
Protection level	IP20 rating, other ratings available upon request.
Installation method	Rack-mount, wall-mount, integrated cabinet configurations.

Product advantages

100a Active Harmonic Filter manufacturers

High switching frequency

The SiC system used in active harmonic filters allows it to switch between on and off states with a very high frequency. This means that it is not limited to power levels and loads, and can perform this task indefinitely.

Hybrid Active Power Filter manufacturers

Reduced losses

Another major benefit, perhaps the biggest advantage of SiC technology, is that it offers very limited losses of energy when switching. This directly addresses one of the biggest cons of the IGBT system used in conventional active harmonic filters.

Compact design possibilities

Since it can handle high voltages and temperature fluctuations, as well as switching frequency, it can allow active harmonic filters to be more compact without losing any of their performance characteristics.

Active Front End Harmonic Filter manufacturers

Higher Reliability & Thermal Performance

SiC devices can handle higher temperatures and offer twice the reliability and response speed compared to conventional silicon-based IGBT products.

Applications

Manufacturing Plants:

CNC machines, VFD-controlled motors, robotic lines.

Data Centers:

Large UPS systems generating high harmonic content.

Commercial Buildings:

HVAC systems and LED lighting loads.

Oil & Gas Industry:

Drilling equipment and heavy-duty motor drives.

Mining Operations:

High-power converters and crushers.

Renewable Energy Systems:

Solar inverters and wind converters.

Certifications

Other Services

All of our machines will be fully checked by our quality control department before the shipment. We guarantee all of our have a one-year warranty (quick-wear parts not included).

Training details: Operation principles, system, and structure, safety and maintenance, software processing technique, etc.

Numerous feedback from our clients have proven that our machines are stable in performance with rare malfunction.However, we would like to handle it as follows once malfunction occurs:

We guarantee that we will give you a clear reply within 24 hours.

Customer service staff will assist you in analyzing the malfunction to locate the cause.

If the malfunction is caused by improper operation of software and other soft faults, we will help solve the problem online.

We will offer plenty of online support, like detailed technical and installation instructions via email, video, and telephone.

Package & Delivery

1. Package: Standard export package or Custom

2. Delivery: By air express, by sea

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FAQ

Q: What is a SiC Active Harmonic Filter (AHF)?

A: A SiC AHF is a power quality device that uses silicon carbide (SiC) semiconductor technology to dynamically eliminate harmonic distortion in electrical systems, improving overall power efficiency and stability.

Q: How does a SiC-based AHF differ from traditional AHF solutions?

A: Compared to conventional silicon-based AHFs, SiC AHFs offer higher switching frequencies, lower losses, improved thermal performance, and faster response times, resulting in more efficient harmonic compensation.

Q: What types of harmonics can the AHF mitigate?

A: A SiC AHF can compensate for multiple harmonic orders simultaneously, typically up to the 50th harmonic, depending on system configuration and design.

Q: What are the key benefits of using a SiC AHF?

A: Key benefits include reduced total harmonic distortion (THD), improved power factor, lower energy losses, extended equipment lifespan, and compliance with power quality standards.

Q: In which applications are SiC AHFs commonly used?

A: They are widely used in industrial automation, data centers, renewable energy systems, EV charging infrastructure, and commercial buildings with nonlinear loads.

Q: How is a SiC AHF installed in an electrical system?

A: The AHF is typically installed in parallel with the load at the point of common coupling (PCC), allowing it to inject compensating currents in real time.

Q: What system voltage levels are supported?

A: SiC AHFs are available for low-voltage and medium-voltage systems, commonly ranging from 208V to 690V, with custom solutions available for higher voltage applications.

Q: How fast is the response time of a SiC AHF?

A: Thanks to high-speed SiC switching devices, response times are typically in the microsecond range, enabling real-time dynamic compensation.

Q: Does the AHF require complex configuration?

A: Modern SiC AHFs feature user-friendly interfaces and auto-detection capabilities, allowing for quick commissioning with minimal manual parameter setup.

Q: Can the system adapt to changing load conditions?

A: Yes, the AHF continuously monitors load conditions and dynamically adjusts compensation currents to match real-time harmonic profiles.

Q: What is the typical efficiency of a SiC AHF?

A: SiC-based systems generally achieve higher efficiency than traditional designs, often exceeding 97–99% depending on load conditions.

Q: Are there any maintenance requirements?

A: Maintenance is minimal and typically includes periodic inspection, cleaning, and firmware updates. The absence of large passive components reduces wear and tear.

Q: What protection features are included?

A: Standard protections include overcurrent, overvoltage, overheating, short circuit, and system fault diagnostics to ensure safe and reliable operation.

Q: Does the AHF support remote monitoring and communication?

A: Yes, most systems support industrial communication protocols such as Modbus TCP/RTU and can be integrated into SCADA or energy management systems.

Q: Which standards and certifications are typically met?

A: SiC AHFs are designed to comply with international standards such as IEEE 519, IEC standards for power quality, and CE/UL certification where required.

As one of the most professional sic ahf manufacturers and suppliers in China, we're featured by quality products and good service. Please rest assured to wholesale custom made sic ahf from our factory. For more information, contact us now.

Active Harmonic Filter And Power Optimizer, Harmonic Filter For Electrical System, Hybrid Active Power Filter