Three phase passive harmonic filter active power filter apf 380v 400v 200kvar

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Three phase passive harmonic filter active power filter apf 380v 400v 200kvar

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Product Description

Three phase passive harmonic filter active power filter APF

⚡ Product Description

The wide application of nonlinear power equipment produces a lot of distorted current harmonics, which cause harmonic voltage when flowing in power grid. This harmonic pollution threatens the safety and stability of power system seriously. Together with electromagnetic interference, power factor reduction, are the three major public hazards for power system.

Active power filter (APF/AHF for short) is a perfect comprehensive solution to power quality problems with power grid such as harmonic wave (can filter 2nd to 50th harmonic interference completely), reactive power, and 3 phase load unbalance. APF is connected in parallel in power grid, to detect the harmonic wave in power grid in real time, generate the reverse-phase compensation current through the converter, and dynamically filter the harmonic wave in power grid.

📍 Application Site

💎 Advantages

Filters out harmonic currents below 2~50 times simultaneously; THDI < 3% at full load.

Multiple working modes: harmonic filtering, reactive power compensation, or combined priority.

Fast calculation using sliding window iterative DFT; instantaneous response < 0.1ms.

Adaptive current average value control algorithm ensures output current distortion < 2.5%.

Reliable current limiting control; automatic protection at 100% capacity output.

International brand IGBTs with unique active clamping technology to prevent over-voltage failure.

3H bridge type three-level structure for high waveform quality and low switching loss.

High-definition touch screen for real-time monitoring and easy operation.

LCL structure output filter prevents high-order harmonics and adapts to any grid impedance.

Xilinx military-grade FPGA for centralized control with 200MHz clock frequency and parallel DSP.

Supports up to 12 devices in parallel using a single FPGA controller.

Equipped with reliable lightning surge protection devices for equipment safety.

📊 Technical Parameters

Parameter	3 Phase 3 Wire	3 Phase 4 Wire
Rated Compensation Current	50A—400A	50A—400A
Working Voltage (V)	400V (-20%~+15%)	400V (-20%~+15%)
Working Frequency	50/60Hz	50/60Hz
Filtering Ability	THDi < 3% (Rated)	THDi < 3% (Rated)
Filter Range	2~50 harmonics	2~50 harmonics
Full Response Time	< 10ms	< 10ms
Active Power Loss	< 3% Rated	< 3% Rated
UI	5.7 inch touch screen	5.7 inch touch screen
Communication	Modbus, RS485, RS232	Modbus, RS485, RS232
Ambient Temperature	-10℃ ~ 40℃	-10℃ ~ 40℃

🔄 Related Products

🏭 Manufacturing & Quality

📦 Packaging & Shipping

❓ Frequently Asked Questions

What is the main function of an Active Power Filter (APF)?

The APF is designed to identify and compensate for harmonic currents in real-time. It filters the 2nd to 50th harmonics, corrects three-phase imbalance, and provides reactive power compensation to improve power factor.

How fast does the APF respond to load changes?

Our APF features an instantaneous response time of less than 0.1ms and a full compensation response time of less than 10ms, making it ideal for rapidly changing non-linear loads.

Can multiple units be used together for larger capacities?

Yes, up to 12 modules can be connected in parallel. They can be centrally controlled via a single FPGA controller to meet high-capacity harmonic compensation requirements.

Does the APF require a specific grid impedance?

No, the output filter uses an LCL structure which is adaptable to any on-site grid system impedance. This design prevents resonance and ensures the safety of the installation.

What happens if the system harmonics exceed the APF capacity?

The APF includes a reliable current-limiting link. If the system's harmonic current is higher than the device's capacity, it will automatically limit its output to 100% capacity to protect itself from damage.

Is the device protected against power surges or lightning?

Yes, the input end of the active filter is equipped with a military-grade lightning surge protection device to safeguard the internal components against voltage spikes.

Product Detail

Three phase passive harmonic filter active power filter apf 380v 400v 200kvar

Product Description

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