Battery DC-DC Converter

ARDA DC Microgrid Platform ready

The ARDA Battery DC-DC Converter is the centerpiece of the ARDA DC Microgrid Solution. Every battery, flow or lithium ion, equipped with our converter is automatically compatible with our solution and can be used in a wide range of microgrid use cases.
The wide input range and large boost ratio of the Battery DC-DC Converter also provide additional benefits to vendors whose products generate low or variable voltage making AC-connected storage applications more affordable to customers.

Technology
ARDA Battery DC-DC Converter employs a novel proprietary topology to connect a Battery to a DC bus. The Converter uses some of the most advanced technologies such as Silicon Carbide switching Mosfets, metglas magnetic cores, and low impedance collecting bus bars.
2 Battery Banks in a Bipolar Configuration - Mid-Point Impedance Grounded
The System Configuration and the Converter's proprietary circuits ensure:
  • Lower Voltages to Ground.​
  • Early detection of Imbalances and DC bus Faults.
  • ​Fuseless and Sensorless Limiting of battery energy discharge to DC bus Faults at very low levels.
  • High Switching Frequency resulting in Lower Battery Current Ripple and Reduced EMI.
  • Fast responses.
  • Battery and DC bus surge Protection.
  • Battery Fusing.
ARDA DC-DC Converter general topology
click to enlarge

Control functions
ARDA Battery DC-DC Converter is capable of performing a wide range of Control functions:
Battery Voltage control (fixed Voltage)
Battery Current control (fixed Current)
Battery Power control (fixed Power)
DC bus Voltage control
DC bus Current control

DC bus Settings
Nominal Voltage range: +/-120VDC to +/-400VDC
The desired nominal DC bus voltage range is configurable letting customers use the same hardware for different battery applications, and lowering or eliminating customization required to interconnect to different types of inverters. Examples of configured Voltage ranges:
+/- 350VDC to +/- 390VDC
+/- 300VDC to +/- 400VDC
+/- 120VDC to +/- 300VDC

​Configurations
The Converter design is modular. For example, four converter building blocks can be packaged into one box, while the box itself can be used to build larger power blocks.

The Converter design is also flexible so it can be configured to different battery technologies and applications, whereby the same basic hardware converter building block will have a different power rating depending on the battery and DC bus voltage ranges.
Converter (building block)
​Example of four Converters packaged in one box