APF Active Power Filter
1.Basic Principle
The active power filter is connected in parallel with the power grid. The load current is detected in real time by an external current transformer (CT), and the harmonic components of the load are extracted by DSP calculation. Using PWM converter technology, the IGBT is controlled to invert a current equal in magnitude and opposite in direction to the load harmonic current and inject it into the power grid, thereby achieving the function of filtering out harmonics.
2.HMI Display
ADL-HMI-4.3(4.3" Display Screen)
ADL-HMI-7(7" Display Screen)
3.Technical Data
| Item | Specification |
| Input Voltage | 400V（-20%~+20%） |
| Mains Frequency | 50Hz/60Hz |
| Wiring Type | 3P3W,3P4W |
| Circuit Topology | Three Level |
| Mounting Type | Drawer type, Wall-mounted type, Cabinet type |
| Number of Units in Parallel | No limit |
| Main Functions | It focuses on harmonic mitigation, also supports reactive power compensation and three-phase imbalance mitigation functions. |
| Rated Capacity | Module capacity: 200A / 150A / 100A / 75A / 50A / 30A Cabinet capacity: Expandable |
| Switching/control frequency | 20KHz |
| Overall Response Time | ≤5ms |
| Instantaneous Response Time | ≤50us |
| Filter Range | 2nd~50th odd order harmonics |
| Filter Order Selection | Harmonics from 2nd to 50th can be selected arbitrarily. |
| Filter Level | Harmonics from 2nd to 50th can be set arbitrarily. |
| Target Power Factor | Adjustable from -1 to +1 continuously |
| Three-phase Imbalance After Compensation | ≤1.5% |
| Rated of Harmonic Reduction | ≥97%, with the 2nd to 50th harmonics filtering rate reaching over 95%. |
| Reactive Power Compensation Rate | ≥99% |
| Active Loss Of System | ≤2.5% |
| Protection Class | IP20,other classes can be customized |
| Noise | ≤55dB |
| Human Machine Interface | Color LCD Touch Screen |
| Communication Interface | RS485,Network port,CAN |
| Communication Protocol | Modbus |
| Ambient Temperature | -20~45℃ |
| Relative Humidity | 5%~95%, no condensation |
| Automatic Startup | Suport |
| Mounting Height Above Sea Level | ≤1500m,appropriately reduce the capacity if it is > 1500m |
Protection function:
Input overvoltage protection, input undervoltage protection, input phase loss protection, input frequency protection, output overcurrent protection, IGBT overtemperature protection, DC bus overvoltage protection, DC bus undervoltage protection, fan stall protection.
4.Overall Dimensions
200A Module Size
200A Drawer Type Mounting Size
200A Wall-mounted Type Mounting Size
100A/120A/150A Module Size
100A/120A/150A Drawer Type Mounting Size
100A/120A/150A Wall-mounted Type Mounting Size
75A Module Size
75A Drawer Type Mounting Size
75A Wall-mounted Type Mounting Size
30A/50A Module Size
30A/50A Drawer Type Mounting Size
30A/50A Wall-mounted Type Mounting Size
5.Model Description
ADL-APF module series cover from 30A to 200A, support drawer type, wall mounted type and cabinet type
| SN | Item | Rated Capacity | Model | Dimensions (W*D*H,CM) |
N.W (KGS) |
Packing Size (W*D*H,CM) |
G.W. (KGS) |
| 1 | APF | 30A | ADL-APF-30-C/0.4 | 43*46.1*16.3 | 20 | 58*59*23 | 22 |
| 2 | APF | 50A | ADL-APF-50-C/0.4 | 43*46.1*16.3 | 20 | 58*59*23 | 22 |
| 3 | APF | 75A | ADL-APF-75-C/0.4 | 43*51*16.3 | 25 | 58*59*23 | 27 |
| 4 | APF | 100A | ADL-APF-100-C/0.4 | 50*65*21.3 | 35 | 63*71.5*28 | 37 |
| 5 | APF | 120A | ADL-APF-120-C/0.4 | 50*65*21.3 | 35 | 63*71.5*28 | 37 |
| 6 | APF | 150A | ADL-APF-150-C/0.4 | 50*65*21.3 | 40 | 63*71.5*28 | 42 |
| 7 | APF | 200A | ADL-APF-200-C/0.4 | 55*70.3*21.3 | 50 | 63*71.5*28 | 52 |
Model Explanation:
6.Advantages And Differences Between APF And Traditional LC Filters
| Aspect | Active Power Filter (APF) | Traditional LC Filter |
| Working Principle | An Active Doctor: Real-time detects and injects opposite harmonics to cancel out pollution. | A Passive Sieve: Like a fixed filter, can only absorb specific frequency harmonics. |
| Filtering Effect | Dynamic & Precise: Can filter multiple harmonics (e.g., 2nd to 50th) simultaneously. Immune to grid changes. | Fixed & Narrow: Only filters a single or a few harmonics. Prone to resonance with the grid, worsening pollution. |
| Functionality | Multi-functional: Core is harmonic filtering, but can expand to reactive power compensation, load balancing, etc. | Single-function: Primarily for filtering OR reactive compensation, difficult to do both. |
| Safety & Reliability | Intelligent & Safe: Cannot resonate with the grid. Features self-diagnosis and protection. | Higher Risk: Susceptible to resonance with grid impedance, risks amplifying harmonics. |
| Size & Installation | Compact & Easy: Small size, light weight, simple installation (parallel connection). | Bulky & Heavy: Large and heavy, requires complex installation and tuning. |
Summary
The APF is like a smart "Power Doctor" that dynamically and precisely cleans various harmonic "viruses". In contrast, the traditional LC filter is like a fixed "sieve" with limited function and potential to cause new "complications" (resonance).
7.More Applications
- Food & beverage industry
- Automotive industry
- Oil & gas industry
- Paper & Chemical industry
- Pharmaceutical industry
- Textile & clothing industry
- Steel industry
- Cement industry
- Microelectronic manufacturers
- Other industries with AC or DC drives
8.Customized Solution
Tailored Solutions, Precise Mitigation – Your Expert in Customized Harmonic Mitigation
Service Description:
We understand that every client operates in a unique electrical environment with distinct load characteristics and process requirements. That's why we never believe in a "one-size-fits-all" approach. Our team of professional engineers is dedicated to providing fully customized harmonic mitigation solutions, ensuring optimal performance and unparalleled protection for your electrical system.
Our Customization Services Include:
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Precise Capacity Configuration: We analyze your load types (e.g., motors, VFDs, welding machines), current power factor, and future expansion plans to calculate and configure the most accurate compensation capacity, preventing over-compensation or under-compensation.
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Environment-Specific Design: For challenging application environments, we offer enhanced designs including dust-proof, moisture-resistant, anti-corrosion, high-temperature endurance, and high-altitude adaptation to ensure stable operation under harsh conditions.
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Specific Load Solutions: For loads that generate significant harmonics (such as VFDs, medium frequency furnaces, arc furnaces), we provide harmonic-resistant compensation schemes with built-in reactors to effectively suppress harmonic amplification and protect capacitors from damage.
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Flexible Control & Protection: We can configure different switching mechanisms (contactor/thyristor) and controllers (basic/smart) based on your automation needs. Comprehensive protection features like over-current, over-voltage, under-voltage, and over-temperature protection are also available.
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Structure & Installation Customization: We offer flexible adjustments to cabinet dimensions, color, and cable entry/exit methods to facilitate easy installation and seamless integration into your existing site.
Our Commitment:
From on-site assessment and solution design to manufacturing, your needs are at the core of everything we do. By choosing us, you gain more than just a high-quality capacitor bank; you secure a customized power assurance plan that enhances energy efficiency, ensures safety, and reduces operational costs.
9.Why Choose ANDELI
- Advanced Technology, Precision Performance
- Superior Quality, Unmatched Reliability
- Expert Team, Dedicated Service
- High Value, Maximum ROI