With the advancement of science and technology, more and more nonlinear loads such as power electronic devices are used in enterprises, such as rectifiers, inverters, UPS, elevators, air conditioners, energy-saving lamps, etc. These nonlinear loads will generate a large amount of harmonic current and inject it into the power grid, causing the voltage waveform to be distorted. This voltage harmonic pollution will cause harm to the power grid and all back-end users. Harmonics are actually a kind of interference. Harmonic problems exist in the power systems of different industries. The main hazards of harmonics include:
Current and voltage distortion
Distortion of current and voltage waveforms caused by harmonics may cause equipment failure and affect the stability of the power grid.
Excessive harmonic content may cause motors to overheat and shorten their lifespan.
Equipment failure and damage
Harmonics can have adverse effects on equipment such as capacitors, transformers, and motors, and may even cause equipment damage.
Communication interference and electromagnetic compatibility issues
Harmonics can interfere with communication systems, affecting data transmission and communication between devices.
In sensitive environments, harmonics can also cause electromagnetic compatibility issues.
Treatment method
The KLD-AMS series active filter detects and tracks the harmonic current generated by the harmonic source load in real time, and quickly generates a current of equal magnitude and opposite direction to offset it, thereby eliminating harmonics and avoiding distortion of the system voltage and current waveforms. The device has an adaptive function, which can compensate for harmonics with varying frequencies and magnitudes, and has an extremely fast response to the compensation object.
Main features:
1. Automatic tracking system
Automatically manage according to the harmonic situation, and filter out 2-71 harmonics;
Can filter out harmonics in the whole area, or selectively filter out each harmonic, and adjust the filtering rate according to demand;
2. Layered design
The module adopts a layered design, with different functional areas separated from each other, suitable for harsh environments;
Each module is equipped with an independent cooling system to reduce the operating temperature of the equipment, and the noise of the whole machine is ≤60dB;
3. Fast control algorithm based on FFT
Decompose the system waveform through fast algorithm and identify the characteristics of harmonic components that need to be controlled;
Calculate the output current according to parameters and control requirements to achieve maximum control effect with minimum power consumption;
4. Three-level topology
Compared with the traditional two-level active filter, it has the advantages of small ripple current and fast response speed, providing users with reliable harmonic control guarantee;
Whether you are in industry, commerce or other industries, KLD-AMS series active filters will be your best choice for optimizing power quality.
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