Active Power Filter (APF), Static Var Generator (SVG)

Employing efficient power electronic topology and advanced all-digital control technology to dynamically compensate for reactive current and harmonic current, improve power factor, and eliminate harmonic current.

Classification:

Active power quality device

Key words:

Passive power quality device

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Product Description

	Active Power Filter (APF)	Static Var Generator (SVG)
System Voltage (V)	400V AC ±10%
Frequency (Hz)	50+/-5%
Wiring Method	Three-phase three-wire/Three-phase four-wire
Capacity	100A, 125A, 150A	75kVar, 100kVar
Function	APF/SVG is a flexible power converter. It first measures the reactive current and harmonic current generated by the load, and then generates a new reactive current and harmonic current with the same amplitude and opposite phase, thereby eliminating most of the reactive current and harmonic current in the power grid.
Difference	APF is a harmonic compensation device used to eliminate harmonics in the system.	SVG is a static reactive power compensation device used to improve the system power factor.
Composition	The APF/SVG system mainly includes the main contactor KM1, pre-charge contactor KM2, pre-charge resistor R, filter inductor L, voltage-type PWM rectifier bridge (VSR), and DC bus capacitor C, etc.
Filtering Rate	≥90% (within the ordered capacity range, and the load harmonic content is higher than 30% of the ordered capacity)
Filtering Range	2~25th harmonics
Operating Mode	Single unit or parallel operation
Operation Mode	Multiple operation modes selectable, remote or local
Overload Protection	Automatic current limiting at 100% rated output
Other Protection	Overvoltage protection, undervoltage protection, overtemperature protection
Operating Ambient Temperature	-10℃～40℃
Storage/Transportation Temperature	-40℃～60℃
Product Features	1. Adopts an active module vertical structure design, using large-capacity IGBT power devices. The devices are selected with an effective value of more than 3 times, leaving a large safety margin. It can work for a long time under large load impacts; 2. Harmonic compensation, reactive power compensation, and simultaneous harmonic and reactive power compensation, multi-purpose in one machine; 3. Has harmonic division compensation function and can set the reactive power compensation ratio; 4. Has various protection functions such as overcurrent, overvoltage, undervoltage, and overtemperature, ensuring safe and reliable system operation; 5. Can be flexibly combined to meet different capacity requirements. While achieving standardized production, it also improves the equipment's 6. Reliability and maintainability, greatly facilitating system installation and maintenance; 7. Single-module independent air duct design can effectively isolate the adhesion of environmental dust and improve the product heat dissipation rate; 8. Fault self-diagnosis and self-start function. The device has a self-recovery function that is not caused by the device itself. Before self-recovery, it needs to automatically diagnose the external power grid and the device itself. Self-start is possible only after the diagnosis is passed.