Modern factories are becoming increasingly automated, eficiente, and intelligent. From CNC machines and robotic production lines to variable frequency drives (VFDS), industrial robots, welding equipment, and automated control systems, advanced electrical equipment has transformed manufacturing processes.
Sin embargo, these technologies have also created a new challenge: power quality problems.
Como ingeniero eléctrico senior en Coeperar, I have worked with industrial customers across manufacturing, automotive, acero, químico, tratamiento de agua, y sectores de energías renovables. One common issue we observe is that many factories invest heavily in production equipment but overlook the quality of the electrical power supplying those systems.
Poor power quality can silently increase operating costs, reduce equipment lifespan, cause unexpected shutdowns, and decrease production efficiency.
Two of the most effective technologies for solving these challenges are:
- Filtros armónicos activos (AHF) — designed to eliminate harmonic distortion
- Generadores de var estáticos (SVG) — designed for dynamic reactive power compensation and power factor correction
Although these two devices are often discussed separately, the best industrial power quality strategy is usually to combine both technologies.
Un Filtro armónico activo + Static Var Generator solution provides comprehensive protection against harmonic pollution, problemas de potencia reactiva, voltage instability, and energy losses.
En este artículo, I will explain why modern factories need both an Active Harmonic Filter and a Static Var Generator.
1. Modern Factories Are Facing More Complex Power Quality Problems
Traditional electrical systems were mainly designed for linear loads such as motors, heaters, and lighting systems.
Today’s factories, however, rely heavily on power electronic equipment, incluido:
- Unidades de frecuencia variable (VFDS)
- Servoaccionamientos
- Sistemas UPS
- maquinas de soldar
- Industrial robots
- Battery charging systems
- Estaciones de carga EV
- Inversores solares
- Rectificadores
Most of these devices are nonlinear loads, meaning they do not consume current in a smooth sinusoidal waveform.
En cambio, they generate electrical disturbances such as:
- Corrientes armónicas
- Distorsión de voltaje
- factor de potencia bajo
- Reactive power fluctuations
- Current imbalance
These problems affect the entire electrical distribution system.
A factory may experience:
- Sobrecalentamiento del transformador
- Motor efficiency reduction
- Frequent circuit breaker trips
- PLC communication failures
- Production interruptions
- Higher electricity costs
This is why relying on only one power quality device is often insufficient.
2. Active Harmonic Filters Solve Harmonic Distortion Problems
¿Qué son los armónicos??
Harmonics are unwanted frequency components that distort the normal electrical waveform.
Por ejemplo, a clean AC power supply operates at the fundamental frequency, typically 50Hz or 60Hz. Nonlinear loads introduce additional frequencies such as:
- 3tercer armónico
- 5º armónico
- 7º armónico
- Armónicos de orden superior
High harmonic levels increase Total Harmonic Distortion (Thd), which can negatively affect industrial equipment.
Problems Caused by Harmonic Distortion
Los armónicos excesivos pueden causar:
Sobrecalentamiento del transformador
Harmonic currents increase additional losses inside transformers, causing higher temperatures and reducing insulation life.
Cable sobrecalentado
Higher RMS current increases cable losses and may require larger cable capacity.
Motor problems
Harmonics create additional heating, vibración, and torque losses in motors.
Mal funcionamiento del equipo
Sensitive equipment such as PLCs, automation systems, and communication devices may fail due to distorted power.
Cómo funcionan los filtros armónicos activos
Un Filtro armónico activo (AHF) continuously monitors the electrical system and detects harmonic currents.
It then generates an opposite compensation current to cancel the unwanted harmonics.
The result is:
- Lower THD
- Cleaner current waveform
- Pérdidas eléctricas reducidas
- Fiabilidad mejorada del equipo
Compared with passive harmonic filters, Active Harmonic Filters provide several advantages:
- Compensación en tiempo real
- Multiple harmonic elimination
- Sin riesgo de resonancia
- Suitable for changing industrial loads
- Easy system expansion
For factories with many VFDs, automation equipment, and electronic loads, AHF is an essential power quality solution.
3. Static Var Generators Improve Power Factor and Voltage Stability
While Active Harmonic Filters focus on harmonic problems, many factories also suffer from reactive power issues.
What Is Reactive Power?
Electrical equipment such as motors and transformers require reactive power to create magnetic fields.
Although reactive power does not perform useful work, it increases current demand from the grid.
Low power factor results in:
- Más facturas de electricidad
- Sanciones de servicios públicos
- Mayor carga del transformador
- Higher distribution losses
How Static Var Generators Work
A Generador de var estático (SVG) uses advanced power electronics to dynamically generate or absorb reactive power.
It automatically adjusts compensation according to load conditions.
SVG proporciona:
- Compensación rápida de potencia reactiva
- Corrección del factor de potencia
- Estabilización de voltaje
- Three-phase balancing
A diferencia de los bancos de condensadores tradicionales, SVG responds instantly to load changes.
This makes it ideal for factories with rapidly changing loads, como:
- Welding operations
- Cranes
- Laminadores
- Injection molding machines
- Large motor systems
4. Why Factories Need Both AHF and SVG
A common misunderstanding is that installing either an Active Harmonic Filter or a Static Var Generator is enough.
Sin embargo, they solve different electrical problems.
Active Harmonic Filter Addresses:
✔ Harmonic distortion
✔ High THD
✔ Nonlinear load pollution
✔ Equipment overheating caused by harmonics
Static Var Generator Addresses:
✔ Low power factor
✔ Reactive power demand
✔ Voltage fluctuation
✔ Load imbalance
A factory with only AHF may still experience high reactive power consumption.
A factory with only SVG may still suffer from harmonic distortion.
Por lo tanto, combining both provides a complete solution.
5. Benefits of Installing AHF and SVG Together
1. Improved Equipment Reliability
Cleaner electrical power reduces stress on:
- Transformadores
- Motores
- Switchgear
- Automation equipment
This extends equipment lifespan and reduces maintenance requirements.
2. Costos de energía reducidos
AHF reduces unnecessary harmonic current, while SVG improves power factor.
Together they reduce:
- Line losses
- Transformer losses
- Reactive power charges
Many factories achieve measurable energy savings after implementing power quality improvements.
3. Increased Production Stability
Unexpected downtime is one of the biggest costs for manufacturers.
Power quality improvements help prevent:
- PLC failures
- Machine shutdowns
- Control system errors
- Production interruptions
4. Compliance With Power Quality Standards
Many industrial facilities must meet power quality requirements such as:
- Ieee 519 harmonic standards
- Utility power quality regulations
- Industrial grid connection requirements
AHF helps reduce harmonic distortion, while SVG improves power factor performance.
6. Industries That Benefit Most From AHF + SVG Solutions
Based on our experience at CoEpower, industries with high-power electronic loads benefit significantly from combined AHF and SVG systems.
Las aplicaciones típicas incluyen:
Plantas de fabricación
- Máquinas CNC
- Líneas de producción automatizadas
- Robótica
Steel Industry
- Hornos de arco
- Laminadores
- Heavy motors
Automotive Factories
- Welding systems
- EV production equipment
- Automated assembly lines
Centros de datos
- Sistemas UPS
- Server power supplies
- Sensitive electronic loads
Plantas de Tratamiento de Agua
- Zapatillas
- Variadores de frecuencia
- Motor control systems
Proyectos de energía renovable
- Inversores solares
- Energy storage systems
- Grid-connected equipment
7. How to Select the Right AHF and SVG System
Choosing the correct power quality solution requires professional analysis.
En CoEpower, we recommend evaluating:
- Existing harmonic levels
- THD measurements
- Características de carga
- Factor de potencia
- Demanda de energía reactiva
- Capacidad de transformador
- Requisitos de expansión futura
The correct solution depends on the actual electrical environment.
Oversizing equipment increases investment costs, while undersizing reduces effectiveness.
A professional power quality assessment ensures maximum performance and return on investment.
Conclusión: The Best Power Quality Strategy Is a Combination of AHF and SVG
Factories today cannot afford unstable electrical systems.
With increasing automation and the growing use of power electronic equipment, harmonic distortion and reactive power problems are becoming more common.
Un Filtro armónico activo and a Generador de var estático solve different but complementary problems:
- AHF eliminates harmonic pollution and reduces THD.
- SVG improves power factor, compensates reactive power, and stabilizes voltage.
Together, they create a cleaner, more efficient, and more reliable electrical system.
En Coeperar, we provide advanced power quality solutions designed for modern industrial applications. By combining Active Harmonic Filters and Static Var Generators, factories can reduce energy costs, protect valuable equipment, improve production reliability, and build a more efficient electrical infrastructure.
If your factory is experiencing high electricity costs, equipment overheating, frequent shutdowns, or unstable power supply, investing in an AHF + SVG solution can be the key step toward achieving better power quality and long-term operational efficiency.
Etiquetas: Filtro armónico activo, Generador de var estático, AHF, SVG, Calidad de energía industrial, Mitigación armónica, Corrección del factor de potencia, Compensación de potencia reactiva, Distorsión armónica, Reducción, Eficiencia energética de la fábrica, Electrical Power Quality Solution, Ieee 519 Cumplimiento, Industrial Electrical System, proveedor, fabricantes, fábrica, compañía, Porcelana, al por mayor, comprar, precio, cotización, a granel, a venta, empresas, existencias, costo.
