Modern factories are becoming increasingly automated, 효율적인, and intelligent. From CNC machines and robotic production lines to variable frequency drives (VFD), industrial robots, welding equipment, and automated control systems, advanced electrical equipment has transformed manufacturing processes.
하지만, these technologies have also created a new challenge: power quality problems.
선임 전기 기술자로서 코퍼워, I have worked with industrial customers across manufacturing, automotive, 강철, 화학적인, 수처리, 재생에너지 부문. 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:
- 활성 고조파 필터 (AHF) — designed to eliminate harmonic distortion
- 정적 var 생성기 (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.
an 활성 고조파 필터 + Static Var Generator solution provides comprehensive protection against harmonic pollution, 무효 전력 문제, voltage instability, and energy losses.
이 기사에서는, 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, 포함:
- 가변 주파수 드라이브 (VFD)
- 서보 드라이브
- UPS 시스템
- 용접기
- Industrial robots
- Battery charging systems
- EV 충전소
- 태양광 인버터
- 정류기
Most of these devices are nonlinear loads, meaning they do not consume current in a smooth sinusoidal waveform.
대신에, they generate electrical disturbances such as:
- 고조파 전류
- 전압 왜곡
- 낮은 역률
- Reactive power fluctuations
- Current imbalance
These problems affect the entire electrical distribution system.
A factory may experience:
- 변압기 과열
- 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
고조파란 무엇인가?
Harmonics are unwanted frequency components that distort the normal electrical waveform.
예를 들어, a clean AC power supply operates at the fundamental frequency, typically 50Hz or 60Hz. Nonlinear loads introduce additional frequencies such as:
- 33차 고조파
- 5일차 고조파
- 7일차 고조파
- 고차 고조파
High harmonic levels increase Total Harmonic Distortion (thd), which can negatively affect industrial equipment.
Problems Caused by Harmonic Distortion
과도한 고조파는 다음을 유발할 수 있습니다.:
변압기 과열
Harmonic currents increase additional losses inside transformers, causing higher temperatures and reducing insulation life.
케이블 과열
Higher RMS current increases cable losses and may require larger cable capacity.
Motor problems
Harmonics create additional heating, 진동, and torque losses in motors.
장비 오작동
Sensitive equipment such as PLCs, automation systems, and communication devices may fail due to distorted power.
능동형 고조파 필터의 작동 방식
an 활성 고조파 필터 (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
- 전기 손실 감소
- 장비 신뢰성 향상
Compared with passive harmonic filters, Active Harmonic Filters provide several advantages:
- 실시간 보상
- Multiple harmonic elimination
- 공명 위험 없음
- 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:
- 높은 전기 요금
- 유틸리티 페널티
- 변압기 부하 증가
- Higher distribution losses
How Static Var Generators Work
에이 정적 var 생성기 (SVG) uses advanced power electronics to dynamically generate or absorb reactive power.
It automatically adjusts compensation according to load conditions.
SVG는 제공합니다:
- 빠른 무효전력 보상
- 전력 계수 보정
- 전압 안정화
- Three-phase balancing
기존 커패시터 은행과 달리, SVG responds instantly to load changes.
This makes it ideal for factories with rapidly changing loads, ~와 같은:
- Welding operations
- Cranes
- Rolling mills
- 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.
하지만, 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.
그러므로, combining both provides a complete solution.
5. Benefits of Installing AHF and SVG Together
1. Improved Equipment Reliability
Cleaner electrical power reduces stress on:
- 트랜스포머
- 모터
- Switchgear
- Automation equipment
This extends equipment lifespan and reduces maintenance requirements.
2. 에너지 비용 절감
AHF reduces unnecessary harmonic current, while SVG improves power factor.
Together they reduce:
- Line losses
- 변압기 손실
- 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.
일반적인 응용 분야는 다음과 같습니다.:
제조 플랜트
- CNC 기계
- 자동화된 생산 라인
- 로봇공학
Steel Industry
- 아크로
- Rolling mills
- Heavy motors
Automotive Factories
- Welding systems
- EV production equipment
- Automated assembly lines
데이터 센터
- UPS 시스템
- Server power supplies
- Sensitive electronic loads
정수장
- 슬리퍼
- 가변 주파수 드라이브
- Motor control systems
재생 가능한 에너지 프로젝트
- 태양광 인버터
- 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.
코이파워에서, we recommend evaluating:
- Existing harmonic levels
- THD measurements
- 부하특성
- 전력 계수
- 반응 전력 수요
- 변압기 용량
- 향후 확장 요구 사항
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.
결론: 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.
an 활성 고조파 필터 and a 정적 var 생성기 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.
~에 코퍼워, 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.
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