Bidirectional DC Power Supplies (Regenerative DC Power Supplies) PBR series

  • PBR series
  • PBR series

PBR series

Regenerative DC Power Supply

  • Max voltage:
    80Vdc to 1500Vdc
  • Max current: 10A to 360A
  • Max power:
    5kW, 10W, and 15kW
  • DC power supply ⇔ Electronic load

Next-generation model with high power and wide output range up to 15kW in a 19-inch, 3U rack

What is a regenerative DC power supply (bi-directional power supply)?

A regenerative DC power supply (bidirectional power supply) is a power supply that has the functions of a DC power supply and a DC electronic load in one unit, and regenerates power to the AC power supply side (system) during load operation. Since it is equipped with functions of a DC power supply and a DC electronic load, it can be easily used to evaluate motor inverters, batteries, bidirectional DC-DC converters, etc. without switching connections.

In addition, the power is regenerated high-efficiently when the DC electronic load is applied, enabling significant size reduction, enabling the significant size reduction of the heat dissipation part.

Introducing the PBR series video

Main applications

It has wide application range such as in-vehicle inverters, converters, motors, and in-vehicle chargers (OBCs) for hybrid vehicles, electric vehicles (EVs), and electric motorcycles, as well as evaluation tests for V2H equipment and power conditioners for solar and wind power generation.

Since it has both power supply and electronic load functions, it can be used for charging and discharging tests of car batteries and household storage batteries without switching connections.

Furthermore, as it can simulate the charging and discharging of batteries, it is used as a battery replacement simulator (battery simulator function). Compared with conventional regenerative power supplies, Matsusada Precision's PBR/PBRM series featuring the compact body and parallel connection can respond with greater flexibility to diversifying application in evaluation and testing.

So, it is no surprise that the series is one of the most popular power supplies among many manufacturers in automobile, automotive equipment manufacturers, transportation equipment, robots, energy equipment, and battery-related field for development, evaluation, and production.

Features and benefits

More Space Saving for Better Workplace

Introducing the extremely compact PBR makes more effective use of your work space. We have developed the smaller regeneration DC power supply for space saving aimed at installing other measuring tools, which makes effective use of the space at workplace.

How to compact

State-of-the-art semiconductor
In order to minimize the heat generation itself inside the power supply, we adopted the latest device including semiconductor elements of high efficiency via thorough examination. This enables the product to provide such a sufficient cooling function to maximize the high performance.
Air-through Circuit Blocking Technology
Following the structure review of the circuit blocking, the product has been made smaller, and we also have put more focus on the improvement of block arrangement contributing to excellent space efficiency by extremely reducing the dead space. Consequently, we achieved the significant development of the high-density mounting technology. While extra spaces inside the device had been required to release the heat so far, we successfully made the product even smaller to ensure the total amount of height of a mere 133 mm.


For all released soon. More lineups will be added at any time.

Model Power running or Regeneration at Maximum
Voltage [Vdc] Current [A] Power [kW]
PBR80V120A5kW 80 120 5
PBR80V240A10kW 80 240 10
PBR80V360A15kW 80 360 15
PBR120V90A5kW Coming soon 120 90 5
PBR120V180A10kW Coming soon 120 180 10
PBR120V270A15kW Coming soon 120 270 15
PBR200V70A5kW 200 70 5
PBR200V140A10kW 200 140 10
PBR200V210A15kW 200 210 15
PBR500V33A5kW 500 33 5
PBR500V66A10kW 500 66 10
PBR500V100A15kW 500 100 15
PBR600V71A15kW 600 71 15
PBR850V36A5kW 850 36 5
PBR850V45A10kW 850 45 10
PBR850V54A15kW 850 54 15
PBR1500V10A5kW 1500 10 5
PBR1500V20A10kW 1500 20 10
PBR1500V30A15kW 1500 30 15

* The device is designed on the assumption that all regenerated power is consumed on the premises.

PBRM series from 30 kw to 150 kw can be found here.


Main Functions

Sequence Setting Input/Output and Operation Log Output via Front USB Terminal

With this function, you can readily perform not only reading sequence settings arbitrarily created but also collecting operating logs which are arbitrarily created by the user.

Operating log Image
Sequence Setting Input or Output software

The attached software can read the log file output from the main unit and shows the data in a graph.

The information on operating log is shown on display as of operation time, CC/CV mode, output value (of voltage, current or power), status, and error information, etc.

display with USB memory

In the function, 1,024 steps of sequence programs as well as 100 patterns of the I-V curve are loaded from a USB memory. The operating log is also outputted to USB memory.

Two-mode Lock Function

The locking is selectable from two setting modes: one is "Full LOCK" to lock all front panel operation, and the other is "Normal LOCK" to lock all operations except the ON/OFF switch.

The function is so user-friendly that the "Full LOCK" mode is provided to ensure the prevention of erroneous operation, and the "Normal LOCK" function facilitates the emergency stop while preventing erroneous operation.

Emergency stop operation using the POWER ON/OFF switch is possible in either mode.


All switches including the touch panel and encoder are locked except LOCK release. It is further effective to prevent the erroneous stop during the remote control and to completely avoid erroneous operation.

Full LOCK function
Normal LOCK

Switches the touch panel, and encoder are locked other than ON/OFF. It is further effective to prevent the erroneous changes of output values during the local control and to facilitate emergency stops.

Normal LOCK function

Internal Resistance Variation Function (in CV mode)

Set the internal resistance to any value to generate a voltage drop when the load current flows. Batteries, photovoltaic cells, and fuel cells can be simulated.

(The setting range of the internal resistance value is from 0 Ω to the rated voltage/rated current.)

a graph of internal resistance

Remote Control

status output

Using the connector in TB1 attached on the back of the unit, the status outputs are available by open collector.

Type TB1 connector pin
Output Common
OVP 13 6
OTP 14
CV/CC or CP 15
  • Withstand voltage: 30 V
  • Sink current: 5 mA

Floating common

Expandable to 150kW with Master/Slave Control

Capable of covering a wide output range with parallel connections of up to 10 units in total.

[Sample Connection]

Connection Diagram with 1 MASTER and 9 SLAVE
graph legend

* Master/Slave control cables for PBR series is available as an optional accessory. For details, download the datasheet.

  • Expandable to a total of 10 Master and Slave units.
  • In Master/Slave connection, the values of output voltage/current for the whole unit are shown on the output voltage/current meter of the Master. (However, each Slave unit does not display the individual output values on the output voltage/current meter.)

Note: Make sure to use the same length of all the cables to connect between each load and the main unit.

Battery Simulator Function (Standard)

In the function, the simulation of I-V curve which is a fundamental feature of battery is provided. The voltage or current value is set at 1001 within the rated voltage or current of the PBR unit. In order to use this function, setting and loading in the PC application attached as standard are needed. Additionally, as many as 100 graph patterns (of I-V curve) are loaded to the PBR unit through this function.

Software as Image
Battery Simulator Function

SOC Automated variable Function (Option)

Using -LAsoc Option, you can automatically change the graph patterns which have been previously created according to the power running or regenerative operation. For power running, the SOC will decrease, and on the other hand, for regeneration, the SOC will increase.

The integrated current is automatically calculated respectively to the change the graph patterns accordingly.

Sequence Function

The sequence function allows programming of parameters such as step time, step amplitude, ramp, CV/CC mode, sequence end setting, step jump, and jump count by simply operating on the front panel. This option enables to generate optional waveforms, and you can use a great variety of applications including testing evaluation, and verification.

  • Step setting time 0.0 s to 3,600.0 s
  • For one program, a maximum of 1,024 steps can be configured and saved.
  • CV/CC mode can be set for each program.
  • Repetition frequency: infinity, or 1 to 999
Program as Image
Sequence Function

The product is also provided with the dedicated software to allow a series of configuration using PC. Thus, you can use the product with different applications depending on the specification.

Dedicated Software window as Image
Sequence Function Dedicated Software Screen

CV/CC Priority Setting Function

CV (constant voltage) priority/CC (constant current) priority mode can be selected and set. As is the case with diodes, a load tends to suddenly change the resistance at certain points. When the device is started in CV mode, the current will be momentary overshot.

In PBR series, select the CC priority mode to suppress the occurrence of overshoot. The function can reduce the risk of damaging expensive loads such as high-power laser diodes.

CV priority mode CV priority mode
CC priority mode CC priority mode

* In the CC priority mode, not by releasing the voltage setting and set the CC value to the lowest within the range where the CC state can be maintained.

Operational range

The regeneration has the lower limit of the voltage/current. For further information, please contact our sales representatives.

Operational range image of PBR80V240A10kW, PBR80V360A15kW

Operation range graph of PBR80V240A10kW and PBR80V360A15kW

Operational range image of PBR200V210A15kW

Operation range graph of PBR200V210A15kW

Operational range image of PBR500V100A15kW

Operation range graph of PBR500V100A15kW

Operational range image of PBR850V53A15kW

Operation range graph of PBR850V53A15kW

Operational range image of PBR1500V30A15kW

Operation range graph of PBR1500V30A15kW


For details, download the datasheet below.


-LAsoc: SOC Automated variable system

Refer to "SOC Automated Variable Function (Option)".

-LCa: CAN interface board *

Using CAN communications, output controlling and operation status monitoring of these devices can be performed.

-LGob: Optical interface board*

  • -LGob: Optical interface board + optical cable 2 m
  • -LGob (Fc5): Optical interface board + optical cable 5 m
  • -LGob (Fc10): Optical interface board + optical cable 10 m
  • -LGob (Fc20): Optical interface board + optical cable 20 m
  • -LGob (Fc40): Optical interface board + optical cable 40 m

The unit is remotely controlled by isolating with optical communication. As complete isolation is provided by means of optical fiber, this enables advance prevention of erroneous operation involved with transient phenomenon caused by surges, inductive lightning, external noise, etc.

The optical communication adapter at the control side is sold separately.
  • for LAN: CO-E32
  • for USB: CO-U32
  • for RS-232C: CO-OPT2-25, CO-OPT2-9
  • for RS-485: CO-OPT4-25
  • for GPIB: CO-G32

-LRs: RS-232C/485 interface board*

Using RS-232C/485 communications, output controlling and operation status monitoring of these devices can be performed.

-L(400V): 400 Vac, three-phase input

It is available with the system power supply voltage of 400 Vac, three-phase, 50/60 Hz.

The applicable models is PBR500V100A15kW-L(400V) model, PBR1500V30A15kW-L(400V) model.

* Selecting each individual option simultaneously in -LCa, -Lgob, and -LRs is not allowed.

How to Order

When ordering, add Option No. to Model No. in alphabetical order followed by the input voltage.

  • PBR80V240A10kW-LGob(Fc10)
  • PBR500V100A15kW-LCa


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