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SD-ADF active filter

Active Power Filter (APF) is connected to the power grid in parallel. By detecting the harmonic and reactive components of the load in real time, the PWM conversion technology is used to inject the current with the same magnitude and opposite direction as the harmonic and reactive components into the power supply and distribution system, so as to realize the function of suppressing harmonic and dynamically compensating reactive power. Active power filter (APF) is a new generation of filtering and compensation products with microcomputer processors and power electronic devices as the core, and its performance completely surpasses the passive products with capacitors and reactors as the core. Not only can filter out harmonics, but also reactive power compensation. It is an ideal solution for filtering and compensation.

Product Description

Active Power Filter (APF) is connected to the power grid in parallel. By detecting the harmonic and reactive components of the load in real time, the PWM conversion technology is used to inject the current with the same magnitude and opposite direction as the harmonic and reactive components into the power supply and distribution system, so as to realize the function of suppressing harmonic and dynamically compensating reactive power.
Active power filter (APF) is a new generation of filtering and compensation products with microcomputer processors and power electronic devices as the core, and its performance completely surpasses the passive products with capacitors and reactors as the core. Not only can filter out harmonics, but also reactive power compensation. It is an ideal solution for filtering and compensation.

 

Design

Real-time follow, dynamic compensation
The detection technology based on instantaneous reactive power theory is used to detect harmonic current in real time, and the harmonic change of power grid is automatically tracked by instantaneous current tracking control, which has high controllability and fast response.

Excellent filtering characteristics
The filtering performance is not affected by the system impedance, and there is no risk of resonance.

Flexible compensation method
A multi-purpose machine can filter out harmonic currents, compensate reactive power and improve power factor.

DSP intelligent monitoring
DSP high-speed detection and operation, to ensure that the harmonic detection and compensation control is accurate and effective, both intelligent monitoring and automatic fault diagnosis function; with remote communication interface, real-time monitoring through the PC.

Advanced Power Conversion Design
The new IGBT high-frequency switching device is adopted, and the main circuit adopts three-phase bridge full-controlled PWM converter technology, which has the characteristics of small size, high efficiency and high reliability. The advanced multiple technology realizes the expansion of the whole machine capacity.

Standard modular design
The power circuit and control circuit adopt module or component structure, which improves the reliability and maintainability in use while realizing standardized production.

 

Technical parameters

 

Name

SD-ADF-/3L Series

SD-ADF-/4L Series

System supply voltage

200~690V

System power frequency

50/60Hz±3%,With automatic frequency sweep function

active filter module

400V: 30A Rev 50A 75A Rev 100A-125A-150A-175A-200A-

690V: 50A □ 75A □ 100A □ 125A □

Active full cabinet capacity

400V:30~600A;   690V:50~500A;

Filtered harmonic number

2 to 61 times, eliminate all or selected number of harmonics

Filtering Times Setting

Individual setting for each harmonic

Efficiency

Up to 98%

Full response time

≤ 10ms

Neutral line filtering capability

-

1 or 3 times phase line harmonic current

Compensation mode

Harmonic compensation, reactive power compensation or harmonic reactive power compensation at the same time, eliminate three-phase imbalance

Parallel operation capacity

Multiple parallel operation

Communication

Transportation RS485/Ethernet/communication function optional; Upper monitoring software (optional)

active power loss

<3% rated output capacity of equipment

APF Controller

Display function (man-machine interface)

1. Power, power factor, voltage current value, total current distortion rate, spectrum diagram, current waveform

2. Load current value, filter output current value

3. Operation mode setting, dry contact setting, fault information and operation time query

Protection mode

Automatic current limiting protection for input over-voltage, input wrong phase, over-current, over-heat, DC bus over-voltage and over-load

Equipment size (W×D×H)mm

Whole cabinet: 800 × 800 × 2200

Cooling mode

forced air cooling

Working environment temperature

-25 ℃ ~ 50 ℃ (higher ambient temperature can be used) <85% RH does not condense

Storage temperature

Storage temperature:-40 ℃ ~ 60 ℃

Installation Environment

Indoor installation

Altitude

<2000m a.s.l.(≤ 5000m optional) (higher altitude can be used)

Protection level

IP20/IP52, higher protection level can be customized

Scope of application

It is suitable for power grid systems with neutral line three-phase balance in industrial applications, which can filter non-zero sequence harmonics and compensate reactive power.

Suitable for three-phase systems with neutral line, which can filter out harmonics flowing through the phase line and the neutral line at the same time

 

Detailed technical parameters and product models, contact us!