Cascaded H-Bridge multilevel converter technology for MV/HV reactive power compensation, voltage stabilization, flicker suppression and harmonic filtering. Up to 160 Mvar. ≤2 ms response. RXPE platform, supplied and commissioned by Forte.
The RXPE STATCOM (Static Synchronous Compensator), supplied and commissioned by FORTE, is a voltage source converter (VSC) built on a cascaded H-Bridge multilevel topology with high-voltage IGBT modules. Where an SVC relies on large capacitors and reactors, the STATCOM generates reactive power directly through power electronics. The result is a faster response, a smaller footprint and a wider operating range.
Response time is ≤2 ms, against ≥10 ms for a conventional SVC. This is why STATCOM is specified for arc furnaces, rolling mills, electrified railways, wind farms and utility substations where fast voltage regulation and flicker suppression are required.
RXPE STATCOM systems are available in forced-air and water-cooled configurations, with indoor, outdoor and containerized installation.
Parameters of the RXPE STATCOM platform. Final ratings are set per project.
| Parameter | Specification |
|---|---|
| Product | RXPE STATCOM — Static Synchronous Compensator |
| Topology | Cascaded H-Bridge Multilevel Converter (VSC) |
| Connection | Delta connection or Wye connection |
| Grid voltage | 6 kV ~ 66 kV direct connection |
| Capacity | Up to 160 MVAr (typical reference capacity) |
| Response time | ≤ 2 ms |
| Power electronics | HV IGBT modules with parallel connection for high power |
| Modulation | SPWM (Sinusoidal Pulse-Width Modulation) |
| Output waveform | Near-sinusoidal multilevel output — very low harmonic content |
| Cooling: forced air | Forced air cooling with metal fans |
| Cooling: water | Water cooling with ion exchange tank, water tank and standby pump |
| Power unit | High-density drawer-type design: IGBT parallel connection, smaller reactor, higher power density |
| Control system | Digital DSP-based with HMI workstation (Windows + PLC) |
| Redundancy | Power unit bypass function — 4 units per phase, auto-bypass on failure |
| Current sensing | Hall current sensors (DC~100 kHz bandwidth) for EAF applications |
| Communication | SCADA, Modbus TCP/RTU, IEC 61850 |
| Operating temperature | -30°C to +50°C (containerized options for extreme climates) |
| Installation | Indoor (wind-cooled), outdoor container (wind/water-cooled), indoor (water-cooled) |
| Standards | IEC 61000, IEC 62271 |
| Certifications | TÜV, CE-LVD, ISO 9001, ISO 14001 (RXPE, manufacturer) |
Where the IGBT converter differs from a thyristor SVC.
Response time of ≤2 ms versus ≥10 ms for a thyristor SVC. The transition from rated capacitive to rated inductive var is completed within this time, which is what impact loads need.
Flicker suppression for arc furnace loads. With ≤2 ms response the STATCOM is fast enough for high-capacity flicker mitigation where a thyristor SVC is not.
STATCOM operates from rated inductive to rated capacitive power and delivers rated reactive current even at low system voltage. The operating range is wider than that of an SVC.
Reactive power compensation, harmonic filtering, 3-phase unbalance correction and negative sequence current suppression in one system.
SPWM modulation gives a near-sinusoidal multilevel output with low harmonic content, while the converter also compensates load harmonics.
No HV capacitor banks or reactors are needed. The installation area is 50% or less of an SVC of equal capacity.
Power cabinet, control cabinet, cooling system and charging system.
Houses the cascaded H-Bridge power units with IGBT modules. High-density drawer-type design for power density and maintenance access.
Digital DSP-based controller with HMI workstation. Handles real-time compensation algorithm, protection and SCADA communication.
Forced air cooling with metal fans, or water cooling with ion exchange tank, water tank and standby pump, depending on capacity and site conditions.
Pre-charge and DC bus management for a controlled power-up sequence.
Loads with fast reactive swings or phase unbalance, and weak transmission systems.
Primary STATCOM application. Direct connection to the EAF bus without a converter transformer. DC components in the furnace current are compensated, which improves flicker reduction.
Unsymmetrical industrial loads causing voltage drop, fluctuation and high-order harmonics. STATCOM keeps voltage stable and harmonics low.
Single-phase traction loads cause 3-phase unbalance and negative sequence current. STATCOM corrects both at the railway substation.
Stabilize weak system voltage, reduce power loss, increase transmission capacity and improve transient stabilization limit.
Grid voltage, transformer rating and the load profile are enough to start. There is no cost before an order.
Technical documents for this product. Ask for a document still in preparation and we will send it as soon as it is ready.
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