Feedback type DC electronic load
1. Product introduction
XDEL series power supply adopts two-stage structure, in which the front stage is BUCK-BOOST bidirectional DCDC carrier phase shift circuit, and the rear stage is SVPWM DC/AC inverter circuit. The power frequency transformer with special filter design is used to isolate the power grid. The front stage uses three-phase half bridge circuit and operates in four quadrants, which can realize the control of power factor and current harmonic, and stabilize the DC bus voltage. The bus is supported by membrane capacitors, with good high-frequency characteristics and long service life.
2. Product features
(1) Built in AC isolation transformer+LC AC/DC filter, input and output are electrically isolated.
(2) Infineon high-voltage IGBT module is used for two-stage conversion and pure digital power frequency isolation power supply.
(3) Energy can be fed back to the power grid: it has both power and load characteristics.
(4) DCDC side adopts carrier phase-shifting circuit, so that the DC output side has higher precision and smaller ripple.
(5) It can realize the characteristics of wide output voltage range, high precision and fast dynamic response.
(6) The output has constant voltage, constant voltage current limiting, constant current, constant power and constant resistance modes.
(7) High voltage film capacitor is selected as DC support capacitor, with reliable performance and long service life.
(8) DC output side adopts high-voltage DC fuse for effective short-circuit protection.
(9) The main control part of the power supply adopts a full digital control circuit, and the main control chip is a TI DSP chip
Technic paramater:
| Equipment model | XDEL series |
| Rated power | 40kW | 80kW | 150kW | 300kW | 400kW | 500kW |
| Rated current | 100A | 300A | 500A | 667A | 1000A | 1000A |
| Rated voltage | 400V | 266V | 300V | 449V | 400V | 500V |
| DC side characteristics |
| Voltage range | DC 24V-1000V |
| Voltage accuracy | ≤0.2%F.S |
| Voltage display accuracy | ≤0.2%F.S |
| Current range | ±100A | ±300A | ±500A | ±667A | ±1000A | ±1000A |
| Current accuracy | ≤0.2%F.S |
| Current display accuracy | ≤0.2%F.S |
| Voltage ripple | ≤0.2%F.S |
| Overall efficiency | ≥92% |
| Feedback characteristic |
| AC voltage | AC 342V-440V |
| AC frequency | 47Hz-53Hz |
| Power factor | ≥0.99 |
| Switching time | ≤10ms |
| Feedback efficiency | Support full range power feedback |
| Display and communication |
| Display function | LCD touch screen |
| Communication function | RS485/RS232/Ethernet port |
| Operating environment |
| Work environment | Under the environment temperature of - 5 ℃~45 ℃ and relative humidity of 0~95%, it can work for 24 hours with full load |
| Degree of protection | IP21 |
| Cooling mode | Fan forced air cooling |
| Altitude | ≤2000m |
| Other features |
| Protection function | Phase loss, overheating, overvoltage, voltage limiting, constant power, overcurrent, short circuit, overload |
| Compressive strength | AC1500V/1min/10mA |
| Insulation resistance | ≥100MΩ |
| Noise | ≤75dB(A) |
| Dimension (W * D * H) mm | 650*650*1680 | 1000*1000*1960 | 1200*1000*1900 | 1800*1000*1900 | 2400*1000*2060 | 2400*1000*2060 |
