Next, we will look at two HVDC applications: Solar Tracker and Class 4 Power Systems (FMPS: Fault Managed Power System).
Solar Tracker:
The solar power plant generates megawatts of power using the voltage of large-scale solar panels (1000-1500V DC). To maximize the power generated, the high voltage between 1000-1500V DC is used as the primary source to rotate the panels and track the sun's rays.
MEAN WELL's RSDH-150 and RSDH-300 HVDC DC/DC converters, distributed in Spain and Portugal by Electrónica OLFER, are a perfect solution for solar trackers. They reduce the high voltage of 1000-1500V DC to power a motor, position the solar panels, and charge a battery that can reset the solar panels' position after sunset.
Furthermore, the RSDH-150/300 converters are designed in a semi-encapsulated format and can operate at temperatures as low as -40°C. These two features make them suitable for outdoor installation.
Class 4 Power System (FMPS)
Fault-managed power systems transmit power from a power transmitter, through cables, to a receiver. These systems are characterized by monitoring the circuit for faults and controlling the transmitted power to ensure that the energy and power delivered in the event of a fault are limited.
Figure 2 shows an FMPS system along with the devices powered by the receiver.
The advantages of a Class 4 power system over mains (AC) power include lower installation costs, as it doesn't require conduit for wiring, remote monitoring/control, and expandability.
To reduce voltage and power loss over long distances, the Class 4 power system uses 350-360VDC HVDC at the transmitter input and receiver output.
MEAN WELL's HVDC input and output power supplies play a crucial role in Class 4 systems. For example, the NCP-3200-380 rack-mount solution with a 260-400VDC output is used to power Class 4 transmitters. The DDRH-240 and RSDH-300 series, with their high input voltage (250-1500VDC), can reduce the output of the Class 4 receiver to power low-voltage devices such as PoE.
In summary, MEAN WELL's HVDC power supplies provide immediate solutions for both Class 4 power system applications and solar trackers: the RSDH/DDRH series reduces high voltage to power low-voltage devices, and the NCP series converts AC to high-voltage DC to power transmitters. All these devices are available in the extensive OLFER Electronics catalog and can be viewed on our website .The
following table shows MEAN WELL's HVDC power solutions:
