100KW 250KW Bidirectional DC Power Supply DC DC Converter for Lithium Battery

Product Description

Energy flows bi-directionally, i.e. it can discharge from the battery side to the DC grid or charge from the DC grid side to the battery.
Fully automatic protection functions for overheating, overload, short circuit, overcurrent, etc.
Selection of original imported power devices.
Fully digital circuit design.
All the chips are industrial grade and can operate normally in cold, high temperature and humid environments.
The main circuit adopts DSP chip produced by TI of America, Infineon IGBT module and Infineon movement for driving and protection, which is safe and reliable.
The output is automatically synchronized with the grid, the current harmonic content is low, and there is no pollution and impact on the grid.
Closed loop control of grid connected current, controllable and adjustable.
Wide input voltage range, suitable for different occasions.
The system has an all-round power protection scheme and perfect self-test and protection function. In case of system failure, it will stop working.
The circuit structure is compact and the maximum efficiency ≥ 96%.
Protection level can be customized according to the user's needs.
Provide Ethernet interface, standard Modbus TCP communication protocol.

250KW Bidirectional DC/DC Converter Parameters

Parameter	Specification
Rated power	250KW
LV rated current	358A (MAX: 716A)
LV voltage range	700Vdc
Ripples coefficient	HV side < 1% F.S. / LV side < 2% F.S.
Control accuracy	< 1% (Remote and local control, @ full load)
Max. efficiency	96% @ full load
Switching frequency on IGBTs	6kHz
HV Voltage range	900-1314Vdc
Dynamic response time	< 2ms
Protection function	Reverse polarity, overheating, overload, overvoltage, overcurrent, undervoltage, etc.
Display	Touch screen
Time propagation	200ms
Communication interface & protocol	Modbus_ TCP (RJ45), Modbus_ RTU (RS485)
RS485 interface number	One
Working temperature	-10°C to +50°C
Relative humidity	0~95%, No condensation
Altitude	≤2000m (More than 2000 meters needs to be derated)
Cooling mode	Air cooling
Noise	≤65dB
Emergency stop switch	Yes
Level of protection	IP55
System electrical input	AC220V 1000W

DMDC-100K Parameter Specifications

Specification	Details
Model	DMDC-100K
Power type	Three phase AC input and DC output
Capacity	100KW
Circuit mode	IGBT/SPWM
AC Input Phase number	Three-phase three wire
Input voltage range(Vac)	400V±15% (Can be customized)
Input current(A)	144A
Input frequency range(Hz)	30-70Hz
DC Output Voltage(Vdc)	220V
Output Voltage Accuracy(V)	≤1%
Output rated current(A)	454.5A
Dynamic response time	2ms
Overload capacity	110% (10min), 200% (10s)
Efficiency	≥95%
Display Type	Touch Screen
Communication	RS485/RS232/WIFI/GPRS
Insulation strength	1500VAC, 1min
Noise (1 m)	≤55dB
Ambient temperature	-10°C ~ +50°C
Humidity	0-90% (No condensation)
Altitude(m)	≤2000m
Indicator light	Electricity, Inverter (Power Supply, Overvoltage, Undervoltage, Overcurrent, Overheat, LED Model Configuration)
Protection	Input connection, input under voltage, output over voltage, output over current, output overload, output short circuit, overheat
Cooling mode	Fan
Size(mm)	9009301700mm
Weight (kg)	360kg

Case Study

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Frequently Asked Questions

What does "bidirectional" mean for this DC power supply?

It means energy can flow in two directions: it can discharge from the battery side back to the DC grid, or it can charge the battery from the DC grid side automatically.

What safety and protection functions are built into the system?

The system features comprehensive protection protocols for overheating, overload, short circuits, overcurrent, overvoltage, undervoltage, and reverse polarity, alongside a reliable automatic emergency stop mechanism.

Can the protection level of the converter cabinet be customized?

Yes, the protection level (up to IP55) can be fully customized according to different user environmental requirements and installation setups.

What communication protocols and interfaces are supported?

The system supports standard Modbus TCP protocol via an RJ45 Ethernet interface, and Modbus RTU protocol via an RS485 connection. Optional support for WIFI and GPRS is also available.

How efficient is the bidirectional DC-DC converter?

Thanks to a compact circuit design and high-quality industrial components like Infineon IGBTs and TI DSP chips, the converter achieves a maximum efficiency of ≥ 96% at full load.

Product Detail

100KW 250KW Bidirectional DC Power Supply DC DC Converter for Lithium Battery

Product Description

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Product Detail

100KW 250KW Bidirectional DC Power Supply DC DC Converter for Lithium Battery

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