Solution of E-Mobility

Active Power Filter

Crootem introduces the latest active power filter to eliminate power grid harmonic. With real-time monitoring of current waveform of non-linear load, the filter removes the fundamental harmonic and shift the rest out of phase. afterward, the IGBT converter feeds the current back to the grid. Additionally, the filter can provide leading/lagging phase wattless current, in order to improve power factor of grid and dynamic wattless compensation (for example DVC). 

"Harmonic is multiple of the fundamental frequency and it can be voltage and current in an electric power system are a result of non-linear electric loads. Harmonic frequencies in the power grid are a frequent cause of power quality problems. Harmonics in power systems result in increased heating in the equipment and conductors, misfiring in variable speed drives, and torque pulsations in motors. Reduction of harmonics is considered desirable."
- Quote from Wikipedia:


Your Benefits:

  1. depressing harmonic, purifying grid, saving total power-related cost up to 8% - 20%, effective recovery of investment
  2. reducing cost of power transformer, avoiding from upgrading power cord, extending lifetime of power transformer
  3. securing electric safety and avoiding accidences
  4. increasing power factor up to 0.95 - 1
Filtering Efficiency <5% THD
Maxima Voltage Fluctuation ±10%
Overload Protection Limited to 100% output power
Surge Protection IEEEC62.41-1991
Environment Temperature 0°C ~ 40°C
Storage Temperature -40°C ~ 65°C
Relative Humidity Max 95%, no condensation
Altitude below 1000m


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Crootem offers quick prototyping service, with very low cost. For more information, Contact our sales personals: