Experience the satisfaction of working with Autodata.

Active Harmonic Filter

This product is under development and featuring soon

Active Harmonic Filters

Active harmonic filters are parallel filters (which means the Load current doesn’t go through the filter) that are used to reduce, or mitigate, harmonics to tolerable levels as defined by IEEE-519.


These are Active Front End IGBT based topologies connected to the mains, to filter (or clean) the current wave by injecting inverse currents to cancel out the undesired harmonic components. Depending on the harmonic content, the load variation and budget it might be better to go in for a Hybrid Filter.

harmonic-load-flow-icon
Active filters can work with multiple drives; when the active filter reaches its limit, it won’t overload. In addition, if an active filter breaks, it won’t stop the motor (since current isn’t going through the filter); it just won’t filter the current wave.
ADT active harmonic filters provide a solution for real-time cancellation of harmonic distortions created by non-linear loads to ensure compliance with IEEE 519, G5/4 and other power quality standards and recommendations. ADT active harmonic filters are a versatile solution, easily tailored to deliver power factor improvement, voltage variation control, flicker mitigation and load balancing functionality.

ADT Q2-series active harmonic filters are built on 3-level topology and are designed for light industrial and commercial buildings with voltage level up to 690V in both 3W and 4W applications. ADT P-series active harmonic filters are customized for demanding applications and are available from 480V up to 1000V. Equipped with state-of-the-art monitoring and reporting functionality, the robust ADT active filters operate in harsh environments and are easily scalable.


ADT Q2 Series AF is connected in parallel with non-linear loads, and uses one set of current transformers (CT) to detect the load current. It calculates each order harmonic current by FFT algorithms in its DSP microchips, and then generates a compensating current with the same amplitude but opposite phase angles to the detected harmonic current, which cancels out the original load harmonics.

The ADT Q2 series AF not only eliminates harmonic current from the load side, but it also mitigates harmonic voltage caused by harmonic currents. The AF system can also improve power factor (PF) and correct load imbalances in the power system.

Features

Multifunctional
• Harmonic, reactive power and imbalance compensation

High harmonic filtering rate
• Up to 98%

Excellent reactive compensation
• High speed, Precise (-0.99≤PF≤0.99), Step-less, Bi-directional (capacitive and inductance) compensation

Excellent imbalance correction
• Both negative and zero sequence, mitigates neutral current
• Wide input voltage & frequency range, adapts to tough electrical environments
•Low thermal loss (≤3% of rated APF kVA), efficiency ≥ 97%

High stability
• Infinite impedance to grid, avoids harmonic resonance problems
Flexible application
• Modular design, embedded in standard or customized cabinet

Easy installation and maintenance
• Plug-in installation for APF module replacement and expansion

Wide capacity range
• 50A~150A for a single cabinet, up 10 cabinets in parallel

Environmental adaptability
• -10~50°C temperature, compatible with diesel generator

Complete protection
• Grid Over/Under voltage, APF over current, over temperature, and more. All faults are recorded in the event log, which is convenient for failure analysis

Technical Specification

Features

Rated Voltage AC 400V, AC 690V
Electrical Specification
Input Voltage Range AC 400V : AC 308V~480V
AC 690V : AC 432V~880V
Electric Connection AC 400V : 3P3W/3P4W
AC 690V : 3P3W
Rated Frequency 50Hz (60Hz) +/- 10%
Input Voltage THD Range ≤15%
Rated Current per Module 100Amp AC 400V : 50Amp, 75Amp
AC 690V : 100Amp
Rated Current per Cabinet
(module combination)
AC 400V : 50~525Amp
AC 690V : 100~500Amp
(module combination)
Redundancy Each module is an independent filtering system
Harmonic Elimination Range
(Selectable)
AC 400V : 2rd ~ 50th order
AC 690V : 2rd ~ 31st order
Harmonic Filtering Degree 0 ~ 100% programmable per harmonic in Ampere value
Harmonic Filtering Performance Filter up to 98% harmonics at rated load, THDv<3%, THDi<5% after filtering
Reactive Power Compensation Both inductive and capacitive reactive power
Imbalance Correction Capability AC 400V : Mitigate negative and zero sequence
AC 690V : Mitigate negative sequence
Full Response time <20ms
Instant Response time <100us
Thermal Loss (kVA) ≤3% of APF rated capacity
Output Current Limitation Automatic (100% rated capacity)
Parallel Expansion(System) AC 400V : Up to 10 Racks(7 modules per cabinet)
AC 690V : Up to 10 Racks(5 modules per cabinet)
MTBF >100,000 hours
Control Technology
Switching Frequency AC 400V - 50A, 75A : 60kHz
AC 400V - 100A : 30kHz
AC 690A : 20kHz
Controller DSP control
Communication Modbus Protocol, RS232/485
Monitoring (Optional) PQC Monitor Software
Physical Specification
IP Grade of Cabinet IP20, IP30 or customization
Cooling method Intelligent forced air cooling
Noise Level AC 400V : < 65dB(A) @1m (Module)
AC 690V : < 70dB(A) @1m (Module)
Environmental Requirement
Ambient Temperature -10~50 ℃
Relative Humidity 0~95%
Altitude ≤ 1000m Rated Capacity,1000-2000m (derating 1% per 100m)

Latest Solutions, And Decades Of Experience.

"Provides High Performance Services For Multiple Industries And Technologies!"

About Autodata

Autodata is established manufacture founded in 1981, India. We are committed towards latest technology by developing globally competitive products and achieving worldwide success. As a true manufacturer, we are driven by an ambition to deliver highest standards of product quality in an industry to gain customer’s satisfaction.

  • Quality Control System, 100% Satisfaction Guarantee
  • Highly Professional Staff, Accurate Testing Processes
  • Unrivalled workmanship, Professional and Qualified
  • Environmental Sensitivity, Personalised solutions

Vision

- To ensure that team members, experience joy in the development, manufacture and  application of modern Power Electronic and Automation Equipment. - To make associates like suppliers, contractors, Investors, bankers and consultants comfortable in our dealings with them. - To conduct business in a manner that make the clients eager to be associated with us, in the projects that they undertake in related fields. -To move forward with new ideas, backed with knowledge and importantly passion.

Mission

- To ensure that team members, experience joy in the development, manufacture and  application of modern Power Electronic and Automation Equipment. - To make associates like suppliers, contractors, Investors, bankers and consultants comfortable in our dealings with them. - To conduct business in a manner that make the clients eager to be associated with us, in the projects that they undertake in related fields. -To move forward with new ideas, backed with knowledge and importantly passion.