Bidirectional DC Source-Sink

The new bi-directional current supply units of the HEA-PSB10000 series offer high power in a small package space, namely 30 kW in only 4 height units. Compared to the HEA-PSB9000 3U series, this results in a space saving of 2 U or one third at 30 kW power.
The user has two units in one at his disposal: A power supply unit (source) and an electronic load (sink) with energy recovery. This means that the units come with the function of two-quadrant operation serially. The internal electronic load ensures high voltage dynamics by discharging the necessary capacities at the DC connection and serves as a full load with energy recovery for a connected source in systems of up to 1.92 MW. In source mode, the device is a controllable, flexible power source like the laboratory power supplies from the HEA-PSI9000 3U series. Thereby combines all the advantages of the devices and eliminates the disadvantages of two separate devices in terms of weight, space requirements, costs and integration into test software.

Source-Sink operation

One of the outstanding features of these devices is the integration of an electronic load (sink) and a power supply unit (source) in one enclosure. It can not only be used as source or sink, but also switches between the two operating modes without transition or time loss. This operating mode is also called two-quadrant operation.

Power Recovery

In all devices of this series, the mains connection is always used for energy recovery of the power recorded at the DC input at load operation, which is converted with an efficiency of up to 95.5%. This type of energy recovery helps to save costs and avoids costly cooling systems compared to conventional loads that convert their input power into heat.

As an alternative to these modular and flexible systems, we also offer the bidirectional DC system HTS17 from the industrial power supply sector.