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EA Bidirectional DC Power Supplies
Programmable power supply & regenerative load all in one
The EA-PSB Series bidirectional DC programmable power supply with integrated, regenerative electronic load series can sink (absorb) current and recover up to 96% of current, returning it to the local power grid. Regenerative PSBs reduce heat, noise and HVAC costs, making them cost-effective and environmentally friendly. Use our ROI calculator to find your savings.
EA’s high-power density bidirectional power supplies:
- Feature input power ratings up to 15kW in 3U or 30kW in 4U form factor with maximum 2000 VDC. PSBs can be easily paralleled in racks to achieve 1.92MW of power.
- Include true autoranging to cover a wider operating range of voltage and current while still maintaining full output. This means that a much wider range of test routines can be addressed with a single EA bidirectional DC power supply with autoranging.
- Use a 5″ TFT Gorilla® Glass touchscreen display for intuitive control and programming. The smart interface enables you to set up and test quickly.
- Come standard with an arbitrary waveform function generator, swappable digital interface module and built-in test routines for battery test, fuel cell simulation, photovoltaic simulation with MPP tracking, and more.
Contact an Applications Engineer today.
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19 Inch Slide-in Housing
(Series PSB and PSB 10000)
Highlights
- Bidirectional
- Autoranging
- Color Touchscreen
Technical Specifications
-
Nominal power
2500W to 30000W
Systems up to 1.92MW parallel operation - Nominal voltage 60V to 2000V
- Nominal current 20A to 1000A
Features
- Master-Auxiliary-Bus for parallel connection
- 19″ Full insertion, 3U or 4U housing
- Analog / USB interface, further options retrofittable
- Microprocessor (FPGA) controlled
- Internal resistance control
- Battery test mode
- Arbitrary generator & car startup curve
- Optional: Digital, swappable interface modules
- SCPI and ModBus protocol
- LabView VIs and control software
- High resolution of up to 16 Bit
- Safety compliant to IEC/EN 61010
- EMI compliant to EN 55022 class B
Click below to see our units in 360° view
| Series | Power Connection | Voltage | Current | Power | Datasheet | Get Quote |
|---|---|---|---|---|---|---|
| EA-PSB 10000 3U | 208-480+10 % 3ph | 0-10V to 0-2000V | 0-20A to 0-510A | 5 kW / 10 kW / 15 kW | Get a Quote | |
| EA-PSB 10000 2U | 100-240+10 % 1ph | 0-10V to 0-1500V | 0-6A to 0-120A | 600-3000W | Get a Quote | |
| EA-PSB 10000 4U | 208-480+10 % 3ph | 0-10V to 0-2000V | +-0-40A to 0-1000A | 30kW | Get a Quote | |
| EA-PSB 9000 3U (EOL) | 380-480V~ 3ph L-L | 0-60V to 0-1500V | +-0-20A to +-0-360A | 5000-15000W | Get a Quote | |
| EA-PSB 9000 3U 208V (EOL) | 220-240V~ | 0-60V to 0-750V | +-0-20A to +-0-120A | 2500W | Get a Quote |
Find the Right Tool
Power Selection Guide
What MUST you consider when choosing a Programmable DC Power Supply? What output is right for your application? How much power you you pay for without over specifying? Download our Guide to help you navigate the many considerations when specing the right DC power supply.
Download Power Guide
True Autoranging – Advantages for Test
All EA bidirectional DC power supplies offer true autoranging which means that the full source and sink power of the devices is available over a wider operating range. The lower the current required in these ranges the higher the voltage available to maintain full power output. This allows a wider range of DUTs to be tested with a single power supply. EA’s autoranging feature provides full power, output as well as input, all the way down to 33% of system voltage and current.
- Save budget and space requirements
- No oversizing supply selection
- One supply tests more requirements
- Future-proof – versatile for future tests
Regenerative – Energy Recovery
The PSB is bidirectional, meaning it can source (provide) or sink (absorb) current and regenerate that current to the local power grid with up to 96% efficiency. The PSB can do this because of the built-in regenerative electronic load. This had the advantage of significantly reducing heat and saving electrical and HVAC costs through operation. Thus the PSB is a very green solution that is good for the environment and has low impact to the working space in terms of heat while reducing overall space requirement (combining a power supply and load into one asset). The EA bidirectional solution is also friendly for your investment ROI!
- Save electricity + HVAC costs
- Efficiency approximately 96%
- Quick return on investment
- Environmentally friendly
Arbitrary Waveform – Function Generator
A common requirement for programmable DC power supplies is to deliver the output voltage or current with a programmed pattern other than a straight-line DC signal. EA’s built-in function generator includes options for various typical waves such as sine, triangle, rectangle, and trapezoid waveforms, as well as custom programmed arbitrary waveforms. Additionally, provided are configuration tools for ramping, UI and IU tables, as well as simulations for fuel cells and photovoltaics with MPP tracking.
FAQs
A bidirectional power supply is used to provide and absorb the flow of electrical energy in both directions. For example, it can supply electrical energy to a device or circuit and absorb electrical energy from it. In this case, it acts as a “sink” to absorb excess energy, convert it back to usable form, and manage power flow efficiently.
A bidirectional power supply is often used in constant voltage (CV) or constant current (CC) mode to simulate a rechargeable battery for a device under test (DUT). A bidirectional power supply then acts as a versatile tool to test and evaluate electronic devices, as it allows engineers to better understand how a device or circuit will operate through voltage fluctuations or below its nominal operating current.
A unidirectional power supply can provide only electrical energy in one direction, typically from the source to the load. In contrast, a bidirectional power supply can both provide and absorb electrical energy in two directions, allowing for greater versatility, especially for a device under test.
A bidirectional converter efficiently converts and controls electrical power between two different forms or directions, such as DC to AC or AC to DC. It can reverse the power flow as needed. The primary purpose of a bidirectional converter is to manage power flow, and this enables applications such as energy storage.
A bidirectional DC power supply can act as either a source of electricity or a sink for electricity. This means it can deliver electricity to a connected device or circuit. It can also act as a power sink, absorbing electrical energy from a connected device or circuit. Acting as a sink, a bidirectional power supply can effectively consume this excess energy, either returning it to the local grid/building facility in a regenerative system or dissipating excess energy in the form of heat.
A bidirectional power supply can reverse or control the flow, making it useful in myriad applications such as battery testing, regenerative braking systems in electric vehicles or renewable energy systems, to name a few. For example, a bidirectional DC power supply allows for research, testing and other industrial applications that would benefit from the ability to control and reverse the power flow.
A DC-DC converter can either be designed as unidirectional or bidirectional. As the prefix indicates, a unidirectional device or converter would allow current flow in a single direction. In contrast, a bidirectional DC-DC converter will allow the current to flow in both directions.
A bidirectional DC-DC converter can manage power flow in both directions, lending it added versatility compared to a unidirectional DC-DC converter. This capability makes it a useful tool for research, testing and measurement in applications requiring power to be supplied and extracted from the same device, such as energy exchange between batteries and the grid. The energy exchange between sources and loads can improve overall system efficiency by optimizing energy utilization.