Regenerative Load Banks
Working Principle
A type of energy-regenerating load. Unlike the previous two types, it does not dissipate energy.Instead, it converts the electrical energy output from the device under test (e.g., generators, inverters, batteries) into clean, in-phase AC power through its internal inverters and control circuits, which is then fed back into the local grid or supplied to other equipment.
Regenerative Load Banks Key Features
- Energy-saving and environmentally friendly: Typically achieves over 70% energy recovery efficiency, significantly reducing operating and testing costs.
- Grid-friendly/grid-connected operation: The fed-back power meets grid connection requirements (e.g., low harmonic distortion, power factor close to 1), ensuring no pollution to the grid.
- Four-quadrant operation: Can not only absorb energy as a load but also supply energy as a source, enabling bidirectional testing such as simulating battery charge/discharge cycles.
Typical Applications of Regenerative Load Banks
Efficiency and grid compatibility testing in renewable energy systems
(e.g., photovoltaic inverters, wind power converters, energy storage system PCS).