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Solution proposalProposal

Active Reactive Power Compensation

NEXICONTROL COMP is a range of active STATCOM compensators developed by VONSCH. The ANPC topology with SiC/IGBT transistors achieves efficiency above 99 %. It responds in real time - eliminating reactive power, stabilising voltage and removing distribution penalties.
>99 %
Max. efficiency
<3 %
Current THD
<50 ms
Response time
50–200 kVAr
Power rating
NEXICONTROL COMP

Why compensate reactive power?

Problem: Inductive loads (motors, transformers) cause a current phase shift. Cables heat up, voltage drops and the distributor charges penalties for reactive power consumption.
Impact: cos φ = 0.7 means 30 % unnecessary grid load. It requires oversizing of cabling and transformers - increased investment and operating costs.
Solution: NEXICONTROL generates compensation current precisely in antiphase - instantly. cos φ → 1.0, penalties at zero, grid stable.

Comparison of compensation methods

Criterion Capacitors Passive filter NEXICONTROL
Response seconds fixed < 50 ms
Harmonics none partial full compensation
Accuracy cos φ ±0,05 fixed ±0,002
TCO low CAPEX medium lowest TCO

Operating modes

Reactive power compensation (STATCOM)
Continuous regulation of reactive power to cos φ = 1.0 or the required setpoint.
Harmonic suppression (APF)
Active filtering of higher harmonics - current THD below 3 %.
Voltage stabilisation
Maintaining grid voltage within the permitted band even with rapid load changes.
Grid Support
DROOP regulation, island grid support and PV/battery system support.

Models and power ratings

Model Reactive power Nom. current Dimensions (WxHxD) Weight
NEXICONTROL 400 050 COMP50 kVAr72 Arms400×1800×300~150 kg
NEXICONTROL 400 100 COMP100 kVAr144 Arms800×1800×400300 kg
NEXICONTROL 400 150 COMP150 kVAr216,5 Arms800×1800×400300 kg
NEXICONTROL 400 200 COMP200 kVAr289 Arms800×2000×400320 kg

Active reactive power compensation system

Control, integration and dispatching

NEXICONTROL active compensators are not isolated devices - they integrate into the customer's existing infrastructure:

  • Remote dispatching - connection via industrial EWON router, remote access and alarm management through Talk2m service.
  • Web visualisation - power factor, reactive power, harmonic distortion and device status directly from the browser.
  • Communication - Modbus RTU/TCP, CAN, integration into upstream SCADA / dispatch.
  • Hybrid systems - combination of passive and active compensation, control-algorithm optimisation for specific load profiles (35+ years of VONSCH experience).

The documentation package includes single-line diagram (SLD), electrical project (switchboards, protection, metering), FAT/SAT protocols and user manuals.

Selected projects

All references in category Reactive power compensation →

Online monitoring via VONSCH Energy Cloud
VONSCH Energy Cloud - production stats

For relevant VONSCH applications we offer the web portal VONSCH.CLOUD. From any browser you can see production, 15-minute trends, fault log and CSV export - no installation, bilingual (SK/EN).

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