Low Voltage Active Power Filter

Category:

Low voltage compensation filter device

key word:

Filtering device

Hotline:

400-0571-505

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Detailed introduction

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Product Overview

Active power filter systems employ cutting-edge, highly effective intelligent control technology for harmonic mitigation. Installed in parallel on both sides of the main distribution panel of the load, they deliver outstanding clean‑up performance for current‑quality issues. With their sophisticated intelligent control, high efficiency, rapid dynamic response, and stable, reliable operation, these systems comprehensively address complex power‑quality challenges, bringing pristine power quality within your reach.
KSVG-APF can dynamically and precisely compensate for harmonics whose magnitude and frequency vary, as well as for varying reactive power. It can simultaneously filter both lower-order and higher-order harmonics with a suppression rate exceeding 95%, without inducing resonance.

Product model

Product Features

The KSVG-APF employs fully controlled power electronic devices and, at a relatively high switching frequency (IGBT), generates higher-order currents to cancel harmonic currents.
Active filters have the following advantages:
● Employs a predictive control method for harmonic currents, delivering fast response (5 ms), strong filtering performance, and low operating losses. It can fully meet the requirements of various operating conditions.
● Capable of dynamically and in real time filtering out all harmonics or multiple selected harmonic orders; employing vector‑based filtering technology, it can selectively compensate for harmonics from the 2nd to the 50th order.
● While filtering out harmonics, it dynamically compensates the fundamental‑frequency reactive power, improves the power factor, and prevents reverse reactive power flow.
● Excellent safety: no resonance or voltage amplification occurs (due to the inclusion of an接入电抗器 in the design); the active filter’s intelligent control system automatically limits the output current, preventing overloading and ensuring safe, reliable operation.
● It can compensate for unbalance, thereby preventing negative-sequence currents from affecting the power grid and electrical equipment.
● Intelligent start-up system, one-button grid connection;
● The electrical section employs an H-bridge topology: the active power filter decomposes the system line voltage into phase voltages for processing, significantly enhancing equipment reliability. It delivers a smooth output current waveform, exhibits low device losses, and utilizes an adaptive control algorithm that can accommodate variations in system impedance.
● Unique 3H bridge topology: Each phase is independently controlled, enhancing the overall system’s controllability. For example, if the harmonic current in one phase exceeds the threshold during compensation, it will not compromise the compensation performance of the other two phases. Additionally, the 3H bridge design offers excellent thermal management, with separate heat dissipation for phases A, B, and C; each phase’s reactor and IGBT are equipped with dedicated cooling components.

Main Technical Parameters

Rated voltage	0.4, 0.66, and 0.69 kV (customizable for special voltages)
Rated frequency	50 Hz, 60 Hz
Single set of filtering capability	900A
Installation position	Indoor
Cooling mode	Air-cooled
Number of modules in parallel	8 units
Filtering function	2nd to 50th harmonics can be filtered.
Compensation function	Single-phase compensation and three-phase compensation
Response time	<5ms
Cabinet type structure	GGD, GCK, GCS, MNS
Altitude	2,000 meters; custom options available for distances exceeding 2,000 meters.
Service life	More than 30 years
Executive standards	DL/T 1216-2013

Standard cabinet dimensions

Capacity (C)/Mvar	50	150	400	600	900
Width (W)/mm			800/1000
Height (H)/mm			2200
Depth (D)/mm			800/1000

Quick Selection Guide

System voltage	Specification model	Equipment capacity kvar
0.4KV	KSAPF-0.4/50N	50
	KSAPF-0.4/100N	100
	KSAPF-0.4/150N	150
	KSAPF-0.4/200N	200
	KSAPF-0.4/250N	250
	KSAPF-0.4/300N	300
	KSAPF-0.4/900N	900
0.8kV	KSAPF-0.8/50N	50
	KSAPF-08/100N	100
	KSAPF-08/300N	300
	KSAPF-08/900N	900

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