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GK1000 AFE Four Quadrant Variable Speed Drives

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    Negotiable

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  • Delivery term:

    The date of payment from buyers deliver within days

  • seat:

    Guangdong

  • Validity to:

    Long-term effective

  • Last update:

    2017-12-14 21:24

  • Browse the number:

    450

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Company Profile
Jiangsu Gtake Electric Co.,Ltd
By certification [File Integrity]
Contact:

jitaike(Mr.)  

Email:

Telephone:

Area:

Guangdong

Address:

Building 10, Zhong-yun-tai Industrial Park, Tangtou Road No.1, Bao'an District, Shenzhen, China, 518108

Website: http://www.variable-frequency-inverter.com/ http://jitaike.drivedemons.com/
Product details

GK1000 AFE Energy Feedback AC Motor Drives

GK1000 provides active front end (Active Front End, hereinafter referred to as AFE) function.Active front end unit not only provides adjustable and stable DC bus voltage, but also pure electric energy feedback to power grid.
Introduction to GK1000 series AFE energy feedback AC Motor Drives
GK1000 series AFE energy feedback AC Drives, consisting of AFE (Active Front End) and AC  Drive, feature with four-quadrant operation. AFE unit could maintain constant  DC bus voltage, improve input power factor, realize energy feedback  efficiently, and achieve reactive compensation to power grid in applications; AC-drive unit could fulfill all varieties of industrial control demand on an AC Drive.
 

Characteristics of GK1000 series

  • Current distortion at power-supply side conforms to GB/17625.6-2003, with extremely low  noise energy feedback

  • Active power factor correction. Realize input-side unit power factor running

  • Excellent dynamic response

  • No requirement of power grid phase sequence, auto grid connection, four-quadrant operation, real-time bus energy feedback; advanced vector control algorithm  ensures conversion with high efficiency

  • Even if momentary grid voltage fluctuation or abrupt load change occurs, constant DC voltage could be pledged due to auto bus voltage adjustment technology. Load capability  could be assured accordingly

Comparison between GK1000 Series and AC Motor Drives Plus RBUs

Item

VFD+RBU

GK1000 Series AFE Energy Feedback AC Drives

Running mode

Diode rectification and RBU feedback alternated

Real-time rectifying and feedback. Line current always sine-wave type

Voltage ripple

Affected

Self-compensated

Energy feedback

Yes

Yes

THD

Rectifying:>10%
Feedback:<5%

Rectifying: < 4% Feedback: < 4%

Power factor

<0.7

=1.0

Voltage threshold

Required

Not required. Real-time feedback

Control on DC-side voltage

No

Yes

Rectification

Diode uncontrolled

Control on DC-side voltage

Typical applications of GK1000 series

Mining equipment: A lot of energy could be saved when using GK1000, as about half of working time of the equipment is in electric-regeneration status.

Typical Applications: Long-distance Conveyors. Winches

Cranes & Hoists: A lot of energy could be saved when using GK1000, as about half of working time of the equipment is in electric-regeneration status.

Typical applications: Cranes. Hoists

A lot of energy could be saved when using GK1000, as about half of working time of the equipment is in electric-regeneration status.

Typical applications: Motor Test Rigs

Large inertia load in high speed: A motor with a large inertia load is in electric-regeneration status when short-time deceleration or stop is performed. A lot of energy is saved when GK1000 is used in these applications instead of AC Drives plus brake resistors.

Typical applications: Centrifugals. Large Industrial Washing Machines

Multi-motor system: Constant common DC bus voltage could be maintained in a multi-motor system while GK1000 are used. Regenerated energy is all fed back to power grid for energy saving purpose, and a number of accessories like brake units and brake resistors are saved accordingly.

Typical Application: Paper Machines. Rolling Mills

GK1000 series AFE energy feedback AC Motor Drives circuit schematic

Common DC bus solution of GK1000 Series AFE

Technical data of AFE part of GK1000 Series

Category

Item

Technical data

Remarks

DC-side parameters

DC-side voltage setting range

450V-750V

/

Leakage current

<50mA

/

Grid-side parameters

power rating

30kW-630kW

/

Rated voltage

3-phase 380-Vac/400Vac/415Vac/440Vac/460Vac

Effective value of line voltage

Rated current

60A-1100A

/

Rated frequency

50Hz/60Hz

Rated value of line frequency

Allowable voltage range

304V-506V

/

Frequency range

±5%

Normal in the range

THD

<4%

THD less than 2.5% at rated Amps

Power factor

≥0.99

Running at unit power factor

0.95(Advanced)~1
10.95(Lagged)~1

Consecutive adjustment at power rating

Overload capability

150% 1min; 180% 10s; 200% 0.5s

Once per 10 mins

Technical Data of AC Motor Drive part of GK1000 Series



     Power output

Applicable motor

See the table Model information of GK1000 Series

Rated current

See the table Model information of GK1000 Series

Output voltage

3-phase:0~rated input voltage, error less than ±3%

Output frequency

0.00Hz~600Hz, Resolution 0.01Hz

Overload capacity

1min; 180% 10s; 200% 0.5s, once per 10 mins

Control characteristics

Control pattern

V/F control

Speed-sensorless control 1

Speed-sensorless control 2

Speed-sensor control, Position control

Starting torque

0.5Hz 180%

0.5Hz 180%

0.25Hz 180%

0Hz 200%

Speed range

1:100

1:100

1:200

1:1000

Speed accuracy

0.50%

±0.2%

±0.2%

±0.02%

Speed ripple

/

±0.3%

±0.3%

±0.1%

Torque control

No

Yes

Yes

Yes

Torque accuracy

/

7.50%

±7.5%

±5%

Torque response

/

<10ms

<10ms

<5ms

Positioning accuracy

/

/

/

±1 pulse

Start frequency

0.00Hz~600Hz

Accel/Decel time

0.00s-60000s

Carrier  frequency

0.7kHz-16kHz

Basic functions

Frequency command modes

Digital setting + keypad ∧/∨; Digital setting + terminal UP/DOWN
Communication setting; Analog setting (AI1/AI2/AI3); Terminal pulse setting

Start methods

Start from starting frequency; DC injection braking at started; Flying start

Stop methods

Ramp to stop; coast to stop; DC injection at ramp stop

Input terminals

7 digital inputs, one of which can be used for high-speed pulse input. Compatible with active open collectors NPN, PNP and dry contact input.
3 analog inputs, one of which supports voltage input only, and the other two are voltage/current programmable.

Output terminals

One high-speed pulse output terminal, 0~50kHz square signal; and two analog outputs can output command frequency, output frequency and so forth
One digital output terminal
Two relay output terminals

Encode input terminal

Compatible with 5V/12V power supply
Compatible with OC, push-pull and differential signal inputs, etc.

Characteristic    functions

Parameter copy, parameter backup, common DC bus, free switchover between two motors' parameters, flexible parameter displayed & hidden, various master & auxiliary command and switchover, reliable speed search started, a variety of Accel/Decel curves programmable, automatic correction of analog, contracting    brake control, 16-step speed control programmable (2 steps support flexible frequency command), wobble frequency control, fixed length control, count function, three faults recorded, over excitation brake, over voltage stall protection programmable, under voltage stall protection programmable, restart upon power loss, skip frequency, frequency binding, four kinds of Accel/Decel time, motor thermal protection, flexible fan control, process PID control, simple PLC, multi-functional key programmable, droop control, asynchronous and synchronous motor parameter identification, field-weakening control,    high-precision torque control, V/f separated control, torque control at sensor-less vector control, torque control at close-loop vector control, two encoder signal inputs (support incremental, UVW hybrid and resolver, etc.),flexible deceleration ratio control, zero servo, motor spindle orientation, simple feed forward control, pulse train position control

Environment

Field

Indoors, no    direct sunlight, free from dust, corrosive gases, flammable gases, oil mist,    water vapor, water drop and salt, etc.

Altitude

0~2000m:    de-rated 1% for every 100m when above 100 meters

     De-rate 1% for every 100m when the altitude is above 1000 meters

Temperature

-10℃~50℃, 50℃ to 60℃: rated output    current de-rates 1% for every 1℃ above 50℃

Humidity

5~95%, no condensation

Vibration

Less than 5.9m/s2 (0.6g)

Storage    temperature

-40℃~+70℃

Others

Efficiency

At rated Amps, 55kW and below: ≥ 95%; 75kW and    above: ≥98%

Protection grade

IP20

Cooling method

Forced air cooling

Model Information of GK1000 Series

Model

Power Rating (KW)

Rated Input Current (A)

Rated Output Current (A)

GK1000-4T30

30

46

60

GK1000-4T37

37

56

75

GK1000-4T45

45

68

91

GK1000-4T55

55

84

112

GK1000-4T75

75

114

150

GK1000-4T90

90

137

176

GK1000-4T110

110

167

210

GK1000-4T132

132

201

253

GK1000-4T160

160

243

310

GK1000-4T185

185

281

350

GK1000-4T200

200

304

380

GK1000-4T220

220

334

430

GK1000-4T250

250

380

470

GK1000-4T280

280

425

520

GK1000-4T315

315

479

590

GK1000-4T355

355

539

650

GK1000-4T400

400

608

725

GK1000-4T450

450

684

820

GK1000-4T500

500

760

860

GK1000-4T560

560

851

950

GK1000-4T630

630

957

1100