Active Power Filter Banner

Advanced APF Solutions Designed for OEMs

Active Power Filter (APF)

P2 Power APF continuously measures system current through external current transformers. The controller processes the measured current in real time to identify harmonic, reactive-power and current-unbalance components


Based on the selected compensation mode, the IGBT power converter generates a compensating current and injects it in parallel with the load. The output current is dynamically controlled through a closed-loop control system to reduce harmonic current, improve power factor and correct three-phase current imbalance


When the compensation demand exceeds the available APF capacity, the output is automatically limited to 100% of rated current, ensuring safe continuous operation without overloading the module

Active Power Filter

Integrated with Alpha, Gamma, Edge, Ultra, and Mini Series power modules to provide intelligent and efficient harmonic mitigation, improved power quality, and reliable system performance

Alpha Series
Alpha Series
Gamma Series
Gamma Series
SiC Series
Ultra Series
Edge Series
Edge Series
SiC Series
Mini Series
How it works?
How the Active Power Filter works
APF System Architecture

The P2 Power Active Power Filter is designed with a modular architecture that offers flexibility, scalability, and simplified maintenance. It uses advanced high-speed IGBT power electronics with closed-loop current control to deliver efficient harmonic compensation.

A complete APF solution consists of one or multiple modules managed through a 7-inch or 10-inch Human Machine Interface (HMI). Each module operates independently, allowing users to easily increase or decrease system capacity by adding or removing modules according to changing load requirements.

APF Module & Cabinet Solutions

APF modules and the HMI can be integrated into P2 Power’s standard APF cabinets or customized enclosures, with protection levels available according to project requirements.

Human Machine Interface (HMI)

Available display options include:

  • 7-inch Touch HMI
  • 10-inch Touch HMI
Standard Cabinet Configuration

Cabinet configurations can include:

  • MCCB
  • SPD
  • HMI
  • Emergency Stop
  • Auxiliary Protection

All configurations can be customized according to project requirements.

Key Features
Selective harmonic compensation with individual monitoring up to the 51st harmonic
Harmonic mitigation efficiency of up to 98%
Modular APF capacities with higher system ratings achievable through parallel operation; a single cabinet can accommodate up to 750 kVAr / 1000 A
High-altitude operation with derating, with standard operation up to 1000 m and 1% derating for each additional 100 m
Integrated diagnostic and protection functions, including DC-bus overvoltage, temperature protection, phase-sequence monitoring, internal power faults and restartfailure detection
Scalable architecture supporting up to 12 parallel modules
Wide operating temperature range: -10°C to +55°C
Selectable grid-side or load-side CT configuration through the HMI
Central HMI monitoring of parameters, harmonics, waveforms, alarms, events, and module status
Suitable for generator-fed systems subject to system study and commissioning configuration
Automatic restart after supply recovery, with a controlled 20-second restart delay when the APF was operating before the interruption
Selectable compensation priority — Harmonic Priority, Power-Factor Priority and Unbalance Priority modes, with remaining capacity automatically available for other enabled functions
APF Compensation Performance

The P2 Power APF is engineered to deliver outstanding harmonic mitigation and power quality improvement. When properly sized and installed in systems with low background voltage distortion, the APF achieves excellent performance even under full-load conditions.

Typical performance includes:

  • Designed to significantly reduce current harmonic distortion; final THDi depends on system conditions, system sizing, and background distortion, helping achieve compliance with IEEE 519 standards.
  • Adjustable target power factor helps achieve up to 0.999 power factor
  • Neutral current compensation for applicable 3P4W systems.

These performance levels help improve equipment reliability, reduce energy losses, and extend the service life of electrical assets.

Applications

The P2 Power Active Power Filter (APF) is suitable for industries that utilize non-linear electrical loads and require superior power quality.

Textile Industry

  • Variable Frequency Drives (VFDs)
  • Motor control systems
  • Automated textile machinery

Foundry & Metal Processing

  • Electric welding equipment
  • Induction furnaces
  • Melting systems

Automotive Industry

  • Thyristor-controlled heating systems
  • Robotic production lines
  • Automated manufacturing equipment
ADDITIONAL APPLICATIONS
Data CentersCommercial BuildingsPharmaceutical Plants Cement PlantsFood & Beverage IndustryPaper & Pulp Industry Steel PlantsOil & Gas FacilitiesRenewable Energy Systems Water & Wastewater Treatment Plants