IT-M3900B Regenerative Power System

IT-M3900B regenerative power system feature two-in-one, which could use as a bidirectional DC power supply, also act as an independent regenerative load. One-button-switch between source and load mode, a unique and decisive feature for the user groups that works in different applications such as battery, PV energy storage, electric vehicle, Green energy and some ATE fields.

Product Features

♦ 2 in 1 unit - a bidirectional power supply and a regenerative load 

♦ One button switch between source and load on front panel

♦ Compact design, 1U@6kW, 2U@12kW

♦ Voltage range: 10~1500V

♦ Current range: -720A~1020A

♦ Power range: ±12kW

♦ Bidirectional energy flow between the DUT and the grid, current seamless switching 

♦ Master/slave parallel connection with parallel technology - keep good performance while power extension*1

♦ Efficient power regeneration -  reduce cost of electricity and cooling 

♦ CC/CV priority

♦ Adjustable output impedance

♦ Battery charge and discharge test

♦ Battery simulation

♦ Partial pre-compliant with LV123, LV148, DIN40839,ISO-16750-2, SAEJ1113-11,LV124 and ISO21848 automotive testing standards
♦ Support solar panel I-V curves simulation*2
♦ Slope of voltage, current and power is settable
♦ Simulation of dynamic driving conditions, up to 10 million points
♦ 8 operation modes under Source mode：CC/CV/CW/CR/CC+CV/CV+CR/CR+CC/CC+CV+CW+CR
Multiple protection:
♦ OVP / ±OCP / ±OPP / OTP /voltage transient drop protection/anti-islanding/power grid detection/pre-charge
♦ Built-in USB/CAN/LAN/digital IO interfaces, Optional GPIB/Analog&RS232

*1. If parallel connection >6 units, pls. contact ITECH for details
*2. Not available for 10V models

Functions and Advantages 

Application

♦ Industrial power supply modules (Inverters, Emergency power supply modules, Bidirectional DC-DC, Rectifier)
♦ Electric Vehicles (BOBC, DC-DC Modules, Automotive Electronic Devices)
♦ Small/Medium Power Motors (Drones, Power tools, Electric Motorbikes)

♦ 5G communication and data center (UPS, UPS inverter unit, HVDC power supply)

One button switch, bidirectional and regenerative

Different from other bidirectional power supplies, IT-M3900B series is a regenerative power system which combines two devices into a 1U unit. It is both a bidirectional DC power supply and also a regenerative DC electronic load. You can switch between Source and Load with one button on the front panel.IT-M3900B not only saves space and equipment purchasing cost for you, but also enables you to connect DUT
easily.

Power regenerative and eco-friendly

With the power regeneration function, IT-M3900B can feed back up to 95% power instead of consuming it as heat. It not only save your cost of electricity, HVAC and cooling infrastructure, but also help to reduce carbon emission and impact on the environment. In addition, IT-M3900B has the function of automatic grid detection, which can detect phase voltage and frequency in real time and synchronizes with the grid to make energy regeneration automatic and safe.

Multiple operation modes

IT-M3900B provide CC/CV/CW/CR modes under source/load mode.

IT-M3900B also provide CC+CR/CV+CR/CV+CC/CC+CV+CW+CR four complex modes under Load mode, adapt to multiple applications. 

Battery simulation function

IT-M3900B unique bidirectional design and variable output impedence makes it easy for the users to set voltage/capacity/internal resistance/SOC quickly to define battery matrix quickly from the front panel, to simulate the charge/discharge characteristics of battery and assist with other tests. ITECH provides optional BSS2000 battery simulation software, then users can self-define the battery curve by setting common parameters, also can set battery initial capacity to verify the DUT characteristics under different battery status. Meanwhile, BSS2000 supports importing matlab battery matrix or CSV. file with battery charging and discharging curve, so as to simulate real battery charge and discharge characteristics.