RHF - REVCON Harmonic Filter - Asia Pacific - Email
RHF - REVCON Harmonic Filter - Asia Pacific - Email
RHF - REVCON Harmonic Filter - Asia Pacific - Email
The red signal in the second picture is showing the input-current-shape of a standard drive with about 4% inductance and clearly, this is far Electronic equipment usually have a rectifier with capacitor input, whose
away from sinus. Of course, the input-current-shape of any drive without inductance is significantly worse.
lifetime is significantly affected by voltage distortion. This results in im-
mediate damage or significant reduced lifetime.
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RHF = REVCON Harmonic Filter overview REVCON Harmonic Filter
280kW typical motor power rating
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REVCON Harmonic Filter 1.1kW – 800kW
RHF-8P and RHF-5P are high efficient double-stage passive Harmonic Filter used to avoid
mains distortion caused by non-linear loads such as variable frequency drives VFDs.
1. Performance: The RHF is designed to reach its stated performance in the field and not defined for unique simu-
lated conditions. The double stage filter offers a smooth damping of all Harmonics, instead of focusing on the
Marine Buildings Oil & Gas Water General 5th Harmonic.
Treatment Industry
2. Full Drive Power: The RHF allows for 100% DC-Bus voltage at 100% drive load. This avoid further calculations
REVCON HARMONIC FILTER and de-rating of the drive. (Drives connected to Simple Harmonic Filter may have up to 7% less power ratings)!
The REVCON Harmonic Filter reduces the THDi of nonli-
near loads and sources to significantly below 5% (optio- 3. Efficiency: Simple Harmonic Filter may add RC circuits in order to reach specified 5% THDi which leads to a
nal <10%) even under realistic circumstances including significant loXer efficiency.The RHF-5P double stage harmonic filter cause up to 70% less power loss than
imbalance and pre-distortion. This is necessary to reach comparable <5% THDi solutions.
various standards and recommendations, such as IEEE
519-2014. Typically, the filter reduces the THDi from
35% to ~3%, with a smooth damping across the full
spectrum. Grid Simple Harmonic Filter Load
Grid REVCON Harmonic Filter Load
+ +
–
Typical single stage passive harmonic filters are tuned –
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The NEW RHF-Hybrid RHF-Hybrid
The new RHF-Hybrid range combines the benefits of the current is low in part load, the RHF-Hybrid use the re-
passive and active technologies and at the same time sources of the active filter component and eliminates
eliminates their disadvantages. A circuit similar to the the reactive power.
RHF-8P is eliminating the mayor part of the Harmonics
while the active filter takes care of the fine-tuning in In addition the active filter component control the swit-
harmonic performance. In part load, any passive harmo- ching of the two passive filter circuits, which allows to
nic filter will cause a reactive current. As the harmonic size the active component to about 10% of the RHF-Hy-
brid rating, which makes the
Hybrid not only superior in
performance, but also com-
petitive in price.
This diagram show the smooth true power factor of the RHF-Hybrid.
Close to 1 at any operating point.
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Active REVCON Harmonic Filter
RHF-Active is a high efficient design used to avoid mains distortion caused by any non-linear load
The RHF-Active is available as a 3-level IGBT based fil- efficiency is >99.3%. For drives <200kW this is even
ter, but also as unique Silicon Carbide (SiC - MOSFET) more efficient than RHF two-stage passive harmonic
based Active Filter! These technologies offers significant filter.
benefits in performance and efficiency.
The efficiency of a 3-Level IGBT based Harmonic filter is
The efficiency of a SiC harmonic filter is >98% and >97% and therefore produce 41% less heat, than com-
therefore produce about 57% less heat than compara- parable solutions based on 2-Level IGBT Technology.
ble solutions based on IGBT technology. Looking at the Looking at the RHF-Active as a harmonic solution for
RHF-Active as a Harmonic solution for drives, the system drives, the system efficiency is >99%.
UI U UI
The RHF-"ctive may be used for pf correction, unbalance compensation, harmonic mitigation or altogether. It reduces the harmonic current
distortion of non-linear loads and sources to any required THDi. This is necessary to reach various standards and recommendations, such as IEEE
519-2014.
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This product catalog was provided by:
REVCON can accept no responsibility for possible errors in brochures or other printed material.
All trademarks in this material are property of the respective companies. REVCON logotype is a
trademark of ELTROPLAN-REVCON GmbH. All rights reserved.
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