High-Efficiency Digital Energy Feedback Unit for 3-Phase AC Grids LED Module

• Application: 3pH AC Power with Voltage Below 660V and 50Hz
• Function: Digital Energy Feedback
• Brand: V&T
• Model NO.: VTF800
• Operating Efficiency: >97%
• Communication Method: Can.RS485
• Power Factor: >0.95
• Overload Capacity Record: 1.45 Times for 60 Seconds; 1.5 Times Protection
• Transport Package: Wood
• Specification: Digital Energy Feedback
• Trademark: V&T
• Origin: China

Product Description

Product Profile

VTF880-RFcan be used as both a rectifier and an inverter, operating in four quadrant mode. Adopting IGBTand SPWMmode, it

can control the size and phase of ACpower, and make the ACinput wave close to sine wave through various filtering and energy

storage links in the front end. The power factor is adjustable positive and negative with a midpoint of 1. When the braking energy on

the motor side returns through the inverter, the DCbus voltage increases, It can make the phase of the ACinput wave opposite to

the power supply voltage, achieve regenerative power generation operation, and feed back the regenerative energy to the AC power

grid to meet the control requirements of high-performance inverters.

Product Features

PWM control method, current harmonics<5% (GB/T14549-1993);
The DC bus voltage remains stable;
By controlling the phase difference angle between voltage and current, the power factor can be adjusted between -1~+1
Chinese 7-inch touch screen display, calculus measurement and feedback of power grid energy;
Higher reliability, with protection against overvoltage, undervoltage, overcurrent, short circuit, and lock.

Applications

Widely used in engine dynamometer, electric vehicle motor testing, new energy hybrid transmission testing, motor performance  testing, lifting and lifting loads, paper transmission industry, as well as DC bus sharing occasions, AFE frequency converter control.

Electrical parameters

 

Input Voltage
Power Voltage	3AC220V,3AC380V,3AC660V(-15%+10%)or customized
Grid frequency	50±3Hz
DC Voltage	220V<400V;380V:<720V;660V:<1150V
Voltage harmonics	<5%
Performance characteristics
Rated capacity	220V: 30KW/45KW/75KW/110KW 380V: 45KW/75KW/110KW/160KW/200KW/250KW/315KW/400KW/500KW/600KW 660V: 45KW/75KW/110KW/160KW/200KW/250KW/320KW/400KW/500KW/600KW
DC voltage control	Feedback function:   Operating voltage:>1.5 times the grid voltage+50V   220V:<400V 380V:<720V   660V:<1150V   PWM rectification and SVG features:   Stable voltage:>1.5times the grid voltage+50V 220V:<400V   380V:<720V   660V:<1150V
Voltage control accuracy	≤0.5%
Power factor	>0.95
Output harmonic content	<5%
Overoad capacity record	1.45 times for 60 seconds 1.5 times protection
Operating effidency	≥97%
Full response time	≤10ms
Control mode
Control Chip	150MHz high-speed DSP digitalsignal proce ssor Programmable gate anray FPGA
Control method	PWM curent tracking control technology DC side voltage balance control technology; Coordinate transfomation vector control technology,Instantaneous current detection technology
Control function	Feedback control PWM rectification control Static varcompensation control (SVG)
Operation mode	Resistive load;Capacitive load;inductive load
Communicationmethod Monitor interface	CAN,RS485 display: Grid voltage,ACcurent,DC voltage,real-time power,feedback energy,faultinfomation and waming status,etc Settings: Control parameters such as feedback input voltage,feedback cutoff voltage,DCconstant voltage,feedback voltage,working mode,etc
Protection me thod	Overcurrent DC overvoltage,AC overvoltage,AC undervoltage,IGBT direc connection, equipment overmeating,reactor overheating,phase-locked fault and extemal settings
Protection response time	Less than 300us,the overcurrent,overvoltage and IGBT through protection are less than 10us
Fault output	Relay output,2 nomally open passive contacs,contact capacity AC250V/5A
Cooling method	Controllable air cooling
Control power	220VAC

Product specifications

LCD Product Specifications

LED Product Specifications