TDK Electronics · TDK Europe

PQSine

Active Harmonic Filter and Power Optimizer

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The cleaner the grid, the greater the benefit

TDK has been offering a comprehensive range of key components for power factor correction (PFC) and power quality solutions (PQS) for many years.

In the past, most consumer loads were linear, i.e. when they were connected to a sinusoidal voltage, the current was also sinusoidal. In the meantime, the use of power electronics has significantly increased. These devices are usually non-linear, i.e. when connected to a sinusoidal voltage they produce non-sinusoidal currents which may create problems for other devices.

Besides passive filters, more and more active harmonic filters are now used, especially where the PF is close to 1 and harmonic disturbances change frequently. 

EPCOS PQSine active harmonic filters and power optimizers help to eliminate harmonic pollution from the grid, reduce power quality problems and use energy more efficiently and reliably.


Overview

The PQSine S series is an active harmonic filter system designed to eliminate harmonic oscillations and consequently reduce costs. PQSine S series monitors the current signal and compensates the unwanted elements of the measured current. Thus, the filter ensures harmonic suppression independently of the number of loads. It also corrects the power factor, improving the system efficiency while reducing harmonic pollution.

 PQSine Chart 1

Without PQSine – Harmonic disturbances caused by e.g. non-linear loads

 PQSine Chart 2

With PQSine – Reactive power harmonic oscillations are actively compensated


PQSine at a Glance

Features

  • High performance 3 level topology design
  • Modular system extendable
  • Voltage range: 200 … 690 V
  • Filter current range per module: 25 … 150 A
  • Filter current per panel: up to 600 A

Typical applications

Fast current harmonics and reactive power suppression e.g. for:

  • Data centers, UPS systems
  • Green power generation systems
  • Industrial production machines
  • Office buildings and shopping centers

Main benefits

Costs

  • Mitigation of harmonics, improving the power factor and consequently reducing the costs e.g. regarding harmonic or power factor penalties
  • Ensures low life-cycle costs thanks to a modular concept and low losses

Electrical

  • Harmonic compensation up to 50th harmonic
  • Ultra-fast reactive power compensation (dynamic VAR compensation)
  • Active load balancing to all three phases

Safety

  • High safety and reliability
  • Integrated overload, overvoltage and undervoltage protection

Display: All floor/wall-mounted systems includes a 7' inch / 4.3' inch HMI TFT color control and display unit (touch screen)


Technical Data


Technical data and specifications

Rated voltage (range)

200 V
(173 ... 263 V)

400 V
(228 ... 456 V)

480 V
(384 ... 552 V)

600 V
(420 ... 690 V)

690 V
(480 ... 790 V)

Mains frequency

50/60Hz (range: 45 ... 65 Hz)

Individual module capacity

25, 35, 50, 60, 75, 100, 150 A

50, 75, 90, 100 A

Neutral filtering capability

3 times the rated filter current (in case of 4 wire device)

Harmonic current compensation range

2nd to 50th harmonic order, or specified harmonics 0 to 110%

Rate of harmonic reduction

> 97% *)

Typical power losses

< 3% (depending of the load)

Target power factor

Adjustable from -1 to 1

Switching frequency

20 kHz / 20 kHz

Reaction time

Approx. 50 μs

Overall response time

< 5 ms

Harmonic compensation

Available

Reactive power compensation

Available

Unbalance compensation

Available

Display

All floor / wall mounted systems includes a 7' inch / 4.3' inch HMI TFT color control and display unit (touch screen)

Communication ports

RS485 and network port (RJ45)

Communication protocols

Modbus (RTU), TCP/IP (Ethernet)

Fault alarm

Available, max. 500 alarm records

Noise level

< 56 dB upto 100 A, < 65 dB for 150 A

< 65 dB (depending on the model)

Protection functions

Overvoltage, undervoltage, short-circuit, inverter bridge inverse, overcompensation

Ambient conditions

-10 to +40 °C (higher temperatures with derating)

Relative humidity

5 to 95%, non-condensation

Cooling

75, 151, 222, 336, 360 L/sec

(25-35, 50-60, 75-100, 150 A)

359 L/sec

Protection class

IP20 according to IEC 529 (customizable)

Panel color

RAL7035 light grey

Altitude

1500; Between 1500 m to 4000 m, according to GB/T3859.2, the power decreases by 1% for every additional 100 m

Qualifications

CE, IEEE 61000

CE, ETL (UL 508 and CSA C22.2 # 2014), IEEE 61000

Compliance with standards

IEEE 519, ER G5/4

*) For typical harmonic order distortions


Advantages

AHF PQSine S series three-level NPC topology

The AHF PQSine S Series range operates on the basis of a three-level Neutral-Point-Clamped (NPC) topology circuit. As can be seen from the diagrams below, the conventional two-level circuit configuration consists of 6 IGBTs (two IGBT power devices in each phase leg and current path). In case of a three-level topology, the circuit configuration consists of 12 IGBTs (four IGBT power devices in each phase leg and current path).

The three-level NPC circuit can produce three voltage levels at the output: the DC bus plus voltage, zero voltage and DC bus negative voltage. The two-level topology can only connect the output to either the plus bus or the negative bus. It also ensures higher quality and better harmonics of the line-to- line output voltage, thus reducing the output filter requirement and the associated costs.


Main advantages of the three-level NPC topology

  • Lower losses: only half of the voltage has to be switched, thus reducing the switching losses in the transistor. Three-level solutions are characterized by reduced circuit losses and higher efficiency, thus supporting energy-saving concepts.
  • Smaller output current ripple: the NPC three-level topology has a lower ripple in the output current and half of the output voltage transient thanks to a higher quality output voltage. This improves performance and reduces the internal filter requirement.
 PQSine Chart Topology 1

Two-level topology circuit

 PQSine Chart Topology 2

Three-level NPC topology circuit

 PQSine Chart Voltage 1

Current and switched output voltage for a two-level topology

 PQSine Chart Voltage 2

Current and switched output voltage for a three-level NPC topology


 

Get data sheets and search

PDF Product Compensation current (A) Input voltage (min/max) (V) System input / Number of phases Series_id
Active Harmonic Filter PQSine 75 348 - 552 3P3W ---
Active Harmonic Filter PQSine 200 228 - 456 3P3W ---
Active Harmonic Filter PQSine 25 228 - 456 3P3W ---
Active Harmonic Filter PQSine 90 420 - 690 3P3W ---
Active Harmonic Filter PQSine 90 384 - 552 3P4W ---
Active Harmonic Filter PQSine 25 228 - 456 3P3W ---
Active Harmonic Filter PQSine 35 228 - 456 3P3W ---
Active Harmonic Filter PQSine 25 228 - 456 3P4W ---
Active Harmonic Filter PQSine 75 348 - 552 3P3W ---
Active Harmonic Filter PQSine 35 228 - 456 3P4W ---
Active Harmonic Filter PQSine 35 228 - 456 3P3W ---
Active Harmonic Filter PQSine 75 420 - 690 3P3W ---
Active Harmonic Filter PQSine 75 483 - 793 3P3W ---
Active Harmonic Filter PQSine 250 228 - 456 3P3W ---
Active Harmonic Filter PQSine 75 420 - 690 3P3W ---
Active Harmonic Filter PQSine 75 483 - 793 3P3W ---
Active Harmonic Filter PQSine 300 228 - 456 3P3W ---
Active Harmonic Filter PQSine 75 420 - 690 3P4W ---
Active Harmonic Filter PQSine 75 420 - 690 3P4W ---
Active Harmonic Filter PQSine 25 228 - 456 3P4W ---
Active Harmonic Filter PQSine 90 420 - 690 3P3W ---
Active Harmonic Filter PQSine 35 228 - 456 3P3W ---
Active Harmonic Filter PQSine 90 483 - 793 3P3W ---
Active Harmonic Filter PQSine 90 483 - 793 3P3W ---
Active Harmonic Filter PQSine 90 420 - 690 3P4W ---
Active Harmonic Filter PQSine 90 483 - 793 3P4W ---
Active Harmonic Filter PQSine 25 228 - 456 3P3W ---
Active Harmonic Filter PQSine 90 420 - 690 3P4W ---
Active Harmonic Filter PQSine 75 384 - 552 3P4W ---
Active Harmonic Filter PQSine 75 384 - 552 3P4W ---
Active Harmonic Filter PQSine 200 228 - 456 3P4W ---
Active Harmonic Filter PQSine 25 228 - 456 3P4W ---
Active Harmonic Filter PQSine 35 228 - 456 3P4W ---
Active Harmonic Filter PQSine 90 483 - 793 3P4W ---
Active Harmonic Filter PQSine 250 228 - 456 3P4W ---
Active Harmonic Filter PQSine 90 348 - 552 3P3W ---
Active Harmonic Filter PQSine 90 348 - 552 3P3W ---
Active Harmonic Filter PQSine 300 228 - 456 3P4W ---
Active Harmonic Filter PQSine 75 483 - 793 3P4W ---
Active Harmonic Filter PQSine 75 483 - 793 3P4W ---
Active Harmonic Filter PQSine 35 228 - 456 3P4W ---
Active Harmonic Filter PQSine 90 384 - 552 3P4W ---

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.

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  • Symbols and terms

In order to download up to 20 files together as zip, please mark them with the check box. To start the download, please click the Download button at the end of the list.


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