TDK Electronics · TDK Europe

PQvar

Static Var Generator (SVG) for Higher Energy Efficiency and Load Balancing

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TDK has been offering a comprehensive range of key components for oower factor correction (PFC) and power quality solutions (PQS) for many years. The rapid development of industry and infrastructure resulted in the increased usage of power electronic loads which demands a highly dynamic response time for reactive power compensation. Conventional reactive power compensation only with passive components cannot fully meet these conditions, especially when the reactive power requirement is rapidly changing. 

EPCOS Static Var Generator (SVG) PQvar® Series utilizes three levels inverter topology to provide real time response to reactive power requirements.


Overview

PQvar is a new approach to power factor correction and load balancing. The modular design and compact structure make it the ideal solution for active stepless PFC and load balancing in industrial applications and commercial buildings. Compared to conventional PFC systems, PQvar offers a response time of less than 15 ms and a dynamic reaction time of less than 50 µs. It can compensate both inductive and capacitive loads and achieve a power factor of 0.99.

By means of the Advanced Multi Controller (AMC), PQvar can be combined with conventional passive LV-compensation stages. The MV-level is covered by systems for 6 kV, 10 kV and 35 kV, with outputs of between 2000 kvar and 12,000 kvar. All modules are available for 3-phase grids with or without neutral conductors. Depending on customer requirements for output and size, the modules are designed as slide-in units for control cabinets, as wall-mounted units for LV-systems or as control cabinets for MV-systems.

 Pic PQvar Chart Overview_1
 Pic PQvar Chart Overview_2

The 3P3W (three phase three wire) PQvar can balance load currents between phases, the 3P4W (three phase four wire) type may additionally reduce neutral conductor currents. Therefore, PQvar is perfect solution at applications having reactive power requirements along with unbalanced loads, which is the case at e.g electricity distribution lines in rural areas, or different industrial applications.


PQVar at a Glance

Features

  • Compensate inductive and capacitive reactive power
  • Active load balancing
  • Voltage: 240 … 690 V
  • Reactive power range per module: 30 … 200 kvar
  • Filter power per panel: up to 800 kvar

Typical applications

Applications with the need for rapid reactive power compensation, e.g.:

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

Main benefits

Costs

  • Improving the power factor and consequently reducing the costs

Electrical:

  • Fast response time < 15 ms
  • Dynamic reaction time less than 50 µs

Safety

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

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)

Individual module capacity (kvar)

30, 60, 120

30, 50, 100, 200

40, 80

50, 100

60, 120

Mains frequency

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

Parallel operation

< 15 ms

Overall efficiency

> 97%

Power grid structure

3P3W / 3P4W

Current transformers

150/5 ... 10 000/5

Circuit topology

3 level

Cooling mode

Smart air cooling: 110 L/sec to 500 L/sec, depending upon the models

Target power factor

Adjustable from -1 ... +1

Cabinet mounting

Floor-mounted, wall-mounted

Communication ports

RS485, and network port

Communication protocols

Modbus

Noise level

< 65 dB (depending on the model)

Protection functions

Overvoltage, undervoltage, short-circuit, inverter bridge invense, over-compensation

Operating temperature

-10 ... +40 (higher temperatures with derating)

Relative humidity

5 ... 95%, non-condensing

Protection class

IP20 (other IP classes are customizable)

Panel color

RAL7035 light grey

Altitude

1500 m, 1% derating per 100 m plus 

EMC requirements

EN 6100_6_2(2005) / EN55011, GROUP1, CLASS A IEC 61000_6_2 (1999) / CISPR11, CROUP1, CLASS A

Compliance with standards

EN 50178:1997 / IEC 50178:1997, EN 50091-3 / IEC 62040-3 / AS 62040-3(VFI SS 111)


Compensation

Fast reaction

 Pic PQvar Chart Compensation_1

Extremely rapid reactive power generation, in order to achieve target PF, right at the SVG PQvar Series switch on.

Perfect compensation

 Pic PQvar Chart Compensation_2

SVG PQvar Series identifies the system reactive power requirement and generates a reactive current same in magnitude but opposite in phase to ensure perfect compensation result.

Real-time tracking

 Pic PQvar Chart Compensation_3

If system reactive current changes, SVG PQvar Series also can generate dynamic real time compen-sation current to satisfy the changing power system requirement.

Reverse & overlapping

 Pic PQvar Chart Compensation_4

The reversed waveform of reactive current generated by SVG PQvar Series overlaps with the power sys-tem reactive current.

High performance

  • Reactive power compensation up to cos ϕ = 0.99
  • Load balancing between phases
  • Fully inductive and capacitive current

Fast response

  • Compensation in real-time with steady state response time less than 15 ms
  • Immediate load change of reaction time less than 50 μs
  • Accurate power factor correction, no over-compensation and under-compensation, no system harmonic resonance
  • Capacity will not be affected in case of system voltage drop, output will be equal to rated capacity

Modular design

The SVG PQvar Series is based on a unit assembly system.

  • Maximum rated capacity of one single module is 200 kvar
  • Customizable cabinet and maximum output capacity of a cabinet is 800 kvar
  • Easily to operate, maintain and transport

Different combinations

  • SVG PQvar Series
  • SVG PQvar Series with capacitor banks
  • SVG PQvar Series with AHF (reactive power and harmonic compensation)

Hybrid PFC

Using the Advanced Multi Controller (AMC), the PQvar system can be combined with conventional passive low-voltage compensation stages.

Advanced Multi Controller (AMC)

SVG PQvar Series plus discrete compensation (SVG modules plus LC reactive compensation)

 Pic PQvar Chart Hybrid PFC_1

Operating principle of SVG with LC banks and AMC

Performance comparison between SVG with LC banks discrete and traditional reactive compensation

 Pic PQvar Chart Hybrid PFC_2


 

Technical Data

Hybrid PFC-Solution - SVG PQvar and classic PFC by Advanced Multi Controller (AMC)

Operating voltage

24 V DC

Compensation performance

Target PF

–1 … +1

Reactive power compensation rate

> 99% (target PF is 1)

Response time

< 15 ms

Reaction time

< 50 μs

Capacitor switching performance

Compensation method

Three-phase/ split/ mixed compensation

Capacitance coding method

Optional

Capacitor switching method

Stack/ normal/ cycle/ individual

Switching manner

Auto/ manual

External ports

RS485 port 1

Communication with SVG modules

RS485 port 2

External communication port

Network port

External communication port

USB port

Code upgrading port

Temperature detection

Measuring system’s operating temperature or ambient temperature

Fan controlling dry contact

Controlling SVC cooling fan

Alarm indicator dry contact

For reserved external alarm indicator

Control output - contact steps

Control outputs, up to 18 at most
Contact support: 120 V AC / 10 A, 220 V AC / 8 A, 400 V AC / 3 A, 110 V DC / 0.2 A, 60 V DC / 0.6 A, 24 V DC / 5 A
Level signal: 12 V DC / 30 mA

Reserved dry contact

One input / one output

Communication protocol

Modbus

Protection functions

Undervoltage, overvoltage, underfrequency, overfrequency, phase failure, high harmonic voltage,SVG overload, SVG overtemperature

Display

7” touch screen

Installation requirements

Power consumption

< 25 W

Protection class

IP41 for the front panel, and IP20 for the rear panel

Operating environment

Ambiet temperature

–20 … +60 °C

Altitude

≤ 2500 m

Humidity

≤ 95%

Storage temperature

–40 … +70 °C

CT ratio

150/5 … 10000/5
 

Get Data Sheets and Search

PDF Product Compensation capacity (kvar) Input voltage (V) System input / Number of phases Type
Accessories for PQvar Static Var Generator --- --- --- 7" Display
PQvar Static Var Generator 550 690 3P3W PQSF6550V715
PQvar Static Var Generator 110 690 3P4W PQSF8110V715
PQvar Static Var Generator 440 690 3P4W PQSF8440V715
PQvar Static Var Generator 220 690 3P3W PQSF6220V715
PQvar Static Var Generator 200 400 3P4W PQSW8200V344
PQvar Static Var Generator 110 690 3P3W PQSF6110V715
PQvar Static Var Generator 440 690 3P3W PQSF6440V715
PQvar Static Var Generator 330 690 3P4W PQSF8330V715
PQvar Static Var Generator 880 690 3P4W PQSF8880V715
PQvar Static Var Generator 770 690 3P4W PQSF8770V715
PQvar Static Var Generator 200 400 3P3W PQSM6200V300
PQvar Static Var Generator 880 690 3P3W PQSF6880V715
PQvar Static Var Generator 200 400 3P4W PQSM8200V300
PQvar Static Var Generator 330 690 3P3W PQSF6330V715
PQvar Static Var Generator 770 690 3P3W PQSF6770V715
PQvar Static Var Generator 600 400 3P4W PQSF8600V315
PQvar Static Var Generator 600 400 3P3W PQSF6600V315
PQvar Static Var Generator 500 400 3P4W PQSF8500V315
PQvar Static Var Generator 800 400 3P4W PQSF8800V315
PQvar Static Var Generator 660 690 3P4W PQSF8660V715
PQvar Static Var Generator 200 400 3P3W PQSW6200V344
PQvar Static Var Generator 800 400 3P3W PQSF6800V315
PQvar Static Var Generator 220 690 3P4W PQSF8220V715
PQvar Static Var Generator 550 690 3P4W PQSF8550V715
PQvar Static Var Generator 660 690 3P3W PQSF6660V715
PQvar Static Var Generator 95 690 3P4W PQSW8095V744
PQvar Static Var Generator 50 690 3P4W PQSM8050V700
PQvar Static Var Generator 75 690 3P3W PQSM6075V700
PQvar Static Var Generator 30 400 3P4W PQSW8030V344
PQvar Static Var Generator 100 400 3P3W PQSW6100V344
PQvar Static Var Generator 95 690 3P4W PQSM8095V700
PQvar Static Var Generator 75 690 3P4W PQSM8075V700
PQvar Static Var Generator 95 690 3P3W PQSM6095V700
PQvar Static Var Generator 50 400 3P3W PQSW6050V344
PQvar Static Var Generator 110 690 3P3W PQSM0110V700
PQvar Static Var Generator 110 690 3P3W PQSW6110V744
PQvar Static Var Generator 30 400 3P3W PQSM6030V300
PQvar Static Var Generator 30 400 3P4W PQSM8030V300
PQvar Static Var Generator 50 690 3P3W PQSW6050V744
PQvar Static Var Generator 250 400 3P4W PQSF8250V315
PQvar Static Var Generator 100 400 3P3W PQSM6100V300
PQvar Static Var Generator 200 400 3P4W PQSF8200V315
PQvar Static Var Generator 250 400 3P3W PQSF6250V315
PQvar Static Var Generator 100 400 3P4W PQSW8100V344
PQvar Static Var Generator 50 400 3P3W PQSM6050V300
PQvar Static Var Generator 500 400 3P3W PQSF6500V315
PQvar Static Var Generator 400 400 3P4W PQSF8400V315
PQvar Static Var Generator 200 400 3P3W PQSF6200V315
PQvar Static Var Generator 100 400 3P4W PQSF8100V315
PQvar Static Var Generator 50 400 3P4W PQSW8050V344
PQvar Static Var Generator 75 690 3P3W PQSW6075V744
PQvar Static Var Generator 110 690 3P4W PQSW8110V744
PQvar Static Var Generator 95 690 3P3W PQSW6095V744
PQvar Static Var Generator 100 400 3P3W PQSF6100V315
PQvar Static Var Generator 300 400 3P4W PQSF8300V315
PQvar Static Var Generator 100 400 3P4W PQSM8100V300
PQvar Static Var Generator 50 690 3P4W PQSW8050V744
PQvar Static Var Generator 400 400 3P3W PQSF6400V315
PQvar Static Var Generator 110 690 3P4W PQSM8110V700
PQvar Static Var Generator 50 400 3P4W PQSM8050V300
PQvar Static Var Generator 50 690 3P3W PQSM6050V700
PQvar Static Var Generator 75 690 3P4W PQSW8075V744
PQvar Static Var Generator 300 400 3P3W PQSF6300V315
PQvar Static Var Generator 30 400 3P3W PQSW6030V344

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.

  • Installation and maintenance instructions for PFC capacitors PhaseCap-series/PhiCap-E-series B25667C/B25669/B25673/B25674/B25675/B32344E
  • Installation and maintenance instructions for PFC capacitors, MKV capacitors B25836
  • Installation and maintenance instructions for PFC capacitors, PhiCap capacitors B32340, B32343
  • Installation and maintenance instructions for PFC DeltaCap
  • Installation and maintenance instructions for PFC capacitors, PoleCap capacitors B25671*
  • Installation and maintenance instructions for capacitor contactors
  • Installation and maintenance instructions for thyristor modules TSM-LC series B44066T*
  • Installation and maintenance instructions for thyristor modulesTSM-HV series B44066T*
  • VIP-3-TP: Intelligent coupling of three compensation systems, Application and Manual
  • Technical Report: Different Connections of PF Controllers BR6000-series
  • Application guide
  • Applications
  • Capacitor questionnaire
  • General technical information
  • Thermal design of capacitors for power electronics
  • Quality specifications
  • 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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