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Improving power quality and optimizing control
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SVG |
Passive filter |
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Maintainability |
Basically no maintenance required |
Replace the capacitor regularly |
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Compensation efficiency |
95% |
60~70%, it is greatly affected by power grid parameters |
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Filtering order |
2~50th harmonics can be compensated, and each harmonic compensation capacity can be set |
Fixed order harmonic compensation
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Reliability |
No resonance |
Nonlinear load is easy to resonate, leading to harmonic amplification, and capacitor is easy to bulge or even burn out |
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Reactive power compensation accuracy |
High accuracy and continuous adjustment |
Generally, there are several tens of kvar, which are prone to be over compensation or under compensation |
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Compensation capacity |
Inductive 100% - capacitive 100%, not affected by grid voltage |
Only capacitive reactive power can be compensated, and the actual compensation capacity is about 80% of the nominal capacity |
NPC type three-level topology, lower loss, smoother output waveform
Independent air duct design. Greatly increase the heat dissipation efficiency of the system, and significantly enhance the adaptability of the system to dust and salt mist
Resonance suppression and monitoring. Active damping algorithm and passive damping design are simultaneously used to suppress resonance.
Harmonic compensation of each order can be set independently
The fan can adjust speed automatically. The cooling fan automatically adjusts the wind speed according to the compensation current and IGBT temperature, which greatly improves the fan life and effectively reduces the system noise
Over temperature automatic capacity reduction. When the IGBT temperature exceeds the threshold, the system will automatically reduce the compensation current to ensure the safety of the system under the extreme working conditions such as fan blocking, filter net blocking and excessively high ambient temperature.
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