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IGBT AHF

IGBT APF offers fast dynamic response and a wide compensation range, capable of tracking grid harmonic changes in milliseconds. Leveraging the high-voltage, high-current characteristics of IGBTs, it is suitable for megawatt-level industrial applications, exhibiting low operating losses and high energy efficiency. With strong overall reliability, excellent shock resistance, and good thermal stability, it is a superior solution for power quality management in complex grid environments.

Your Professional IGBT 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(±20%)
Operating frequency	50/60Hz,±10%
Product specifications	50,75,100A,150A,200A
Current transformer specifications	50:5 ~ 30000:5
Noise	＜65dB
Features
Switching devices	IGBT
Switching frequency	>20kHz
Heat dissipation methods	Intelligent air cooling
Heat dissipation control	Adaptive fan speed adjustment
Protection functions	Overvoltage, undervoltage, overheating, overcurrent, short circuit protection
Compensation performance
Harmonic filtering rate	＞95%
Active power loss	＜3%
Harmonic filtering range	Harmonics from 2nd to 50th can be individually controlled and configured.
Total response time	＜10ms
Resonance suppression	Active inhibition
Display Interface
Display screen	7-foot full-color touchscreen (cabinet type)
Language	Chinese, English, and customizable languages
Battery display	Distortion rate, power factor, power, voltage, current, and other data display
Communication interface and protocol type	RS485, Modbus protocol
Environmental conditions
Operating temperature	-10℃~+40℃
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

High-power handling: IGBTs can handle high voltages and currents, making them suitable for applications like motor drives, power supplies and industrial control systems.

Large power dissipation: They can dissipate significant amounts of power without overheating, ensuring reliable operation.

Efficient power conversion: IGBTs have fast switching times, which reduces power losses and improves the efficiency of power conversion systems.

High-frequency operation: They can operate at higher frequencies, enabling smaller and lighter power electronic components.

Reduced power losses: The low voltage drop across an IGBT when it is conducting minimizes power dissipation, leading to higher overall system efficiency.

Improved energy efficiency: This translates to lower energy consumption and reduced operating costs.

Easy control: The high input impedance of the IGBT gate makes it easy to drive with low-power control signals.

Reduced gate drive losses: This reduces the power required for gate drive circuitry.

Harsh environments: IGBTs are designed to be highly reliable and can withstand harsh operating conditions, such as high temperatures and vibration.

Long lifespan: Their robust construction ensures a long lifespan, reducing maintenance costs and downtime.

Wide range of applications: IGBTs are used in a wide range of applications, including motor drives, power supplies, renewable energy systems and industrial control.

Adaptability: They can be configured in various topologies and circuits to meet specific requirements.

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.

Available Configurations

APF (Active Power Filter) – Focuses on harmonic elimination, load balancing, and dynamic power factor correction.

APF + SVG (Hybrid Model) – Combines harmonic filtering with Static Var Generation for advanced reactive power compensation and voltage stability.

Whether you need a compact solution for harmonic distortion or a full-spectrum system for complete power conditioning, our AHF range offers a perfect fit.

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 an AHF active harmonic filter?

A: An Active Harmonic Filter is a power quality device that dynamically mitigates harmonic distortions in electrical systems by generating counteracting currents. It helps in reducing harmonics, improving power factor, and stabilizing voltage fluctuations.

Q: How does the AHF active harmonic filter work?

A: An AHF continuously monitors the electrical system using current sensors and detects harmonic distortions. It then generates real-time compensating currents with an inverse phase to neutralize harmonics, ensuring a clean power supply.

Q: What is the purpose of the AHF active harmonic filter?

A: The primary purpose of an AHF is to improve power quality by:
-Reducing harmonic distortions
-Enhancing power factor
-Mitigating voltage fluctuations
-Reducing stress on electrical equipment, extending their lifespan

Q: What is the difference between an AHF active harmonic filter and a PHF passive harmonic filter?

A: Active Harmonic Filter (AHF): Uses real-time electronics and injects compensating currents to cancel harmonics dynamically.
Passive Harmonic Filter (PHF): Uses passive components (inductors, capacitors, resistors) tuned to specific harmonic frequencies for mitigation.

Q: Which is better, an active or passive filter?

A: AHF is better for dynamic loads, variable-frequency drives (VFDs), and systems with fluctuating harmonic levels.
PHF is more cost-effective for stable loads with predictable harmonic profiles.
The choice depends on application requirements, budget, and flexibility needs.

Q: What is the difference between an active harmonic filter and a capacitor bank?

A: AHF primarily mitigates harmonics and improves power quality.
Capacitor banks are used for power factor correction but can worsen harmonics in some cases.
AHFs can function dynamically, whereas capacitor banks are typically fixed or switched in steps.

Q: What is the difference between an AHF active harmonic filter and SVG Static Var Generator?

A: AHF focuses on harmonic compensation and power factor correction.
SVG primarily provides reactive power compensation to maintain a stable power factor.
AHFs are better for harmonic-rich environments, while SVGs are ideal for voltage stability and reactive power control.

Q: How do you choose an active harmonic filter?

A: Consider the following factors:
-Harmonic spectrum analysis of the system
-Load size and variation
-Total harmonic distortion (THD) limits required
-Power factor improvement needs
-Compatibility with existing electrical infrastructure
-Budget and cost-effectiveness

Q: Can AHF active harmonic filter eliminate all harmonics?

A: AHF cannot completely eliminate all harmonics, but it can significantly reduce harmonic distortion to meet international standards such as IEEE-519. The actual performance depends on the filter's capacity, system harmonic levels, and compensation strategy.

Q: Does an active harmonic filter help with unbalanced loads?

A: Yes, AHF not only mitigates harmonics but also balances three-phase currents, reducing neutral currents. It is beneficial for applications with single-phase or unbalanced loads, such as data centers and office buildings.

Q: How to choose the installation location for the AHF active harmonic filter?

A: Centralized installation: Used for overall compensation at the distribution system level.
Distributed installation: Applied to specific equipment (e.g., VFDs, UPS) for localized compensation.
Proximity installation: Typically recommended near harmonic sources (nonlinear loads) to improve compensation efficiency.

Q: Does the active harmonic filter require regular maintenance?

A: Compared to traditional reactive power compensation devices (e.g., capacitor banks), AHF requires less maintenance. However, periodic inspections of the cooling system, operational status monitoring, and dust cleaning are necessary to ensure long-term stable operation.

Q: Does AHF active harmonic filter help with energy savings?

A: AHF does not directly save energy, but it can reduce power losses and improve equipment efficiency, leading to indirect cost savings. For example, it minimizes cable and transformer overheating and motor extra losses caused by harmonics, ultimately lowering overall energy consumption.

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

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