DC/DC Converter

Request a Quote

Website: http://wenlida-tech.com/4-1-dc-dc-converter.html

Combining boost converter (step-up), buck converter (step-down) and bidirectional DC/DC converter for versatile voltage conversion in renewable energy and energy storage systems

Efficiency: ≥ 99%
Rated power (kW): 1.66~200kW
Input voltage range (Vdc): 0~2000V
Output voltage range (Vdc): 0~1200V
Voltage regulation accuracy: ±0.5%FS / ±1%FS
Current regulation accuracy: ±1%FS @ rated power, ± 0.5%FS @ rated power
Operating mode: auto switch constant voltage, constant current (CV/CC), constant current (CC), constant voltage (CV), maximum power point tracking (MPPT), MPPT with constant voltage
Communication interface: RS485 / CAN
Protection level: IP 20 / IP 20 / IP 65
Cooling method: air cooled / water cooled

DC/DC converters regulate direct current by converting it from one voltage level to another, ensuring stable and efficient power transfer across different applications. They operate by storing and releasing energy through inductors and capacitors, using high-frequency switching devices such as MOSFETs or IGBTs. Depending on the configuration, they can perform step-up (boost), step-down (buck), or bidirectional conversion to support both charging and discharging in energy storage systems. Their versatility makes them indispensable in renewable energy projects, battery management systems, and smart grids where voltage stability and efficiency are essential.

Features

DC/DC converters reach up to 98% conversion efficiency using wide bandgap semiconductor devices such as SiC, operating at switching frequencies in the hundreds of kilohertz, well above the 90–95% range of traditional converters.
Support a broad voltage range, from 0 V for flow battery startup charging to 1500 V for renewable energy applications. Output voltage can be precisely controlled within ±1%.
Offer fast dynamic response during transitions between charging and discharging, ensuring stable frequency regulation in wind and energy storage systems.
Feature a modular “cluster-management” design that provides redundancy and fault tolerance. If one module fails, it automatically disconnects while others continue operating safely.
Include multiple protection functions, overvoltage, overcurrent, and overtemperature safeguards, along with spike absorption and snubber circuits. Support wind turbine black-start capability and extend overall service life.
Allow power modules to be connected in parallel for flexible capacity expansion, scaling easily from kilowatt to megawatt levels.
Enable bidirectional energy flow for both charging and discharging, making DC/DC converters suitable for regenerative braking in electric vehicles and power control in energy storage systems.
Use intelligent control algorithms such as fuzzy logic and neural networks to maintain SOC (State of Charge) balance between clusters and manage constant-current, constant-voltage, or constant-power modes.
Employ liquid cooling for efficient heat dissipation, providing stable operation in high-temperature environments and industrial-grade protection for demanding sites such as mining and mobile platforms.

Specifications

DC/DC Converter (Air-cooled)

Series

Air-Cooled
60V Series

Air-Cooled
900V Series

Air-Cooled
1200V Series

Air-Cooled
1500V Series

Air-Cooled
2000V Series

Air-Cooled
SIC Series

Input side/High-voltage side

Efficiency (full load)

≥ 99%

≥ 98%

≥ 96%

≥ 98%

Input voltage range (Vdc)

0–60

0–950 (900–950@18/36/54kW)

0–900

0–1200

0–1500

1100–2000

0–800

Input current range (A)

0–33/0–66/0–100

0–120/0–200/0–350

0–40

0–50/0–100/0–150

0–50

0–100/0–150

0–100

0–20/0–40

Output side/Low-Voltage side

Output voltage range (Vdc)

0–60

0–950 (Vhigh×0.1< Vlow < Vhigh×0.9)

0–950 (Vhigh×0.05< Vlow <Vhigh×0.95)

0–720 (Vhigh×0.1< Vlow <Vhigh×0.9)

0–760 (Vhigh×0.05< Vlow <Vhigh×0.95)

0–1080 (Vhigh×0.1< Vlow <Vhigh×0.9)

0–1140 (Vhigh×0.05< Vlow <Vhigh×0.95)

0–1000 (Vhigh×0.1< Vlow <1000)

0–720 (Vhigh×0.1< Vlow <Vhigh×0.9)

Rated power (kW)

1.66/3.32/5

60/120/200

20/40/60

40/60

6/12

Max. power (kW)

2002/4/6

80/140/240

30/60/100

60/100

100

7.5/15

Constant power voltage range (Vdc)

500–810/600–810

500–850/600–850

600–720

600–760

700–1080

700–1140

600–100/680–1000

680–1000

500–800

Output current range (A)

0–33/0–66/0–100

0–120/0–200/0–350

0–40

0–50/0–100/0–150

0–50

0–100/0–150

0–150

0–20/0–40

Voltage regulation accuracy

±1%FS

±0.5%FS

±1%FS

±0.5%FS

±1%FS

±0.5%FS

±1%FS

Current regulation accuracy

±1%FS @ rated power

±0.5%FS @ rated power

±1%FS @ rated power

±0.5%FS @ rated power

±1%FS @ rated power

±0.5%FS @ rated power

±1%FS @ rated power

Response time

≤ 100ms

≤ 5ms

≤ 100ms

≤ 5ms

≤ 100ms

Operating mode

Auto switch

Constant voltage/constant current (CV/CC) Constant current (CC) Constant voltage (CV) Maximum power point tracking (MPPT), MPPT with constant voltage

Communication interface

RS485

Modbus RTU (isolated), 1 channel

Modbus RTU (isolated), 2 channels

Modbus RTU (isolated), 1 channel

CAN

CAN 2.0A/B (isolated), 1 channel

CAN 2.0A/B (isolated), 2 channels

CAN 2.0A/B (isolated), 1 channel BMS compatible

CAN 2.0A/B (isolated), 2 channels BMS compatible

CAN 2.0A/B (isolated), 1 channel BMS compatible

CAN 2.0A/B (isolated), 2 channels BMS compatible

CAN 2.0A/B (isolated), 1 channel BMS compatible

CAN 2.0A/B (isolated), 2 channels BMS compatible

CAN 2.0A/B (isolated), 1 channel BMS compatible

Protection

High-voltage side

Over-voltage, under-voltage

Over-voltage, under-voltage, reverse polarity

Low-Voltage side

Over-voltage, under-voltage, over-current

Over-voltage, under-voltage, reverse polarity, over-current

Over-voltage, under-voltage, reverse polarity, over-current, short-circuit

Over-voltage, under-voltage, reverse polarity, over-current

Other protections

Over-temperature protection with automatic recovery after fault removal

General

Protection level

IP 20

IP 54

IP 20

Installation method

Left and right mounting ears

M8 screws for radiator mounting

Left and right mounting ears

Operating temperature

-20℃ to 45℃ (derating required above 45°C)

Operating environment

Relative humidity: < 95%RH non-condensing Altitude: < 2000m (for above 2000m, usage should be derated according to GB/T3859.2)

Noise level

< 45dB at 1m distance under rated operation

Dimensions (D×W×H)

300×100×88mm

500×250×154mm
500×363×154mm
500×543×154mm (without mounting ear)

600×363×154mm 600/543/154 mm (mounting ear)

390×185×270mm

600×363×154mm 600×543×154mm

600×363×154mm

552×445×176mm 600×543×154mm

600×685×198mm

255×183×110mm

Weight

2/3/4

20/36/54kg

21/37kg

25kg

21/37/55kg

21kg

37/55kg

60kg

3.4/4kg

DC/DC Converter (Water-Cooled)

Series		Water-Cooled 60V Series	Water-Cooled 900V Series		Water-Cooled 1200V Series			Water-Cooled SIC Series
Input side/High-voltage side	Efficiency (full load)	≥ 99%	≥ 98%		≥ 96%		≥ 98%	≥ 98%
	Input voltage range (Vdc)	0–60	0–900		0–1200			0–150
	Input current range (A)	0–33/0–66/0–100	0–150/0–200	0–150/0–200/0–360	0–100/0–200	0–100/0–200	0–360	0–250
Output side/Low-Voltage side	Output voltage range (Vdc)	0–60	0–720	0–760	0–1080	0–1140	0–1140	0–135
	Output voltage range (Vdc)	0–60	Vhigh×0.1< Vlow <Vhigh×0.9	Vhigh×0.05< Vlow <Vhigh×0.95	Vhigh×0.1< Vlow <Vhigh×0.9	Vhigh×0.05< Vlow <Vhigh×0.95	Vhigh×0.05< Vlow <Vhigh×0.95	Vhigh×0.1< Vlow <Vhigh×0.9
	Rated power (kW)	1.66/3.32/5	40/60	40/60/150	40/60	40/60	170	15
	Max. power (kW)	2002/4/6	60/100	60/100/200	60/100	60/100	250	20
	Constant power voltage range (Vdc)	-	500–720/600–720	500–760/600–760/650–760	700–1080/600–1080	700–1140/600–1140	900–1140	80–135
	Output current range (A)	0–33/0–66/0–100	0–150/0–200	0–150/0–200/0–360	0–100/0–200	0–100/0–200	0–360	0–250
	Voltage regulation accuracy	±1%FS	±1%FS	±0.5%FS	±1%FS	±0.5%FS	±0.5%FS	±0.5%FS
	Current regulation accuracy	±1%FS @ rated power	±1%FS @ rated power	±0.5%FS @ rated power	±1%FS @ rated power	±0.5%FS @ rated power	±0.5%FS @ rated power	±0.5%FS @ rated power
	Response time	≤ 100ms	≤ 100ms	≤ 5ms	≤ 100ms	≤ 5ms	≤ 5ms	≤ 5ms
Operating mode	Auto switch	Constant voltage/constant current (CV/CC) Constant current (CC) Constant voltage (CV) Maximum power point tracking (MPPT), MPPT with constant voltage	Constant voltage/constant current (CV/CC) Constant current (CC) Constant voltage (CV) Maximum power point tracking (MPPT), MPPT with constant voltage		Constant voltage/constant current (CV/CC) Constant current (CC) Constant voltage (CV) Maximum power point tracking (MPPT), MPPT with constant voltage			Constant voltage/constant current (CV/CC) Constant current (CC) Constant voltage (CV) Maximum power point tracking (MPPT), MPPT with constant voltage
Communication interface	RS 485	Modbus RTU (isolated), 1 channel	Modbus RTU (isolated), 2 channels	Modbus RTU (isolated), 2 channels	Modbus RTU (isolated), 2 channels	Modbus RTU (isolated), 2 channels	Modbus RTU (isolated), 2 channels	Modbus RTU (isolated), 2 channels
Communication interface	CAN	CAN 2.0A/B (isolated), 1 channel	CAN 2.0A/B (isolated), 1 channel BMS compatible	CAN 2.0A/B (isolated), 2 channels BMS compatible	CAN 2.0A/B (isolated), 1 channel BMS compatible	CAN 2.0A/B (isolated), 2 channels BMS compatible	CAN 2.0A/B (isolated), 2 channels BMS compatible	CAN 2.0A/B (isolated), 2 channels BMS compatible
Protection	High-voltage side	Over-voltage, under-voltage	Over-voltage, under-voltage, reverse polarity		Over-voltage, under-voltage, reverse polarity			Over-voltage, under-voltage, reverse polarity
	Low-Voltage side	Over-voltage, under-voltage, over-current	Over-voltage, under-voltage, reverse polarity, over-current, short-circuit		Over-voltage, under-voltage, reverse polarity, over-current, short-circuit			Over-voltage, under-voltage, reverse polarity, over-current, short-circuit
	Other protections	Over-temperature protection with automatic recovery after fault removal	Over-temperature protection with automatic recovery after fault removal		Over-temperature protection with automatic recovery after fault removal			Over-temperature protection with automatic recovery after fault removal
General	Protection level	IP 65	IP 65		IP 65			IP 65
	Installation method	Fixed on both left and right sides at bottom using mounting brackets	Fixed on both left and right sides at bottom using mounting brackets		Fixed on both left and right sides at bottom using mounting brackets			Left and right mounting ears
	Operating temperature	Inlet water temperature: < 30°C Outlet water temperature: < 80°C	Inlet water temperature: <30°C Outlet water temperature:< 80°C		Inlet water temperature:< 30°C Outlet water temperature:< 80°C			Inlet water temperature:< 30°C Outlet water temperature:< 80°C
	Operating environment	Flow rate: ≥5L/min Flow resistance: < 15kPa	Flow rate: ≥15L/min Flow resistance:< 15kPa		Flow rate: ≥15L/min Flow resistance: < 15kPa			Flow rate: ≥15L/min Flow resistance: < 15kPa
	Noise level	< 45dB at 1m distance under rated operation	< 45dB at 1m distance under rated operation		< 45dB at 1m distance under rated operation			< 45dB at 1m distance under rated operation
	Dimensions (D×W×H)	300×100×88mm 300×165×88mm 300×200×88mm	460×400×200mm	460×400×200mm 500×740×240mm	460×400×200mm	460×400×200mm	500×740×240mm	450×300×132mm
	Weight	4/5/6	45/55	45/55/80	45/55	45/55	80	10

Applications

AC/DC Microgrids
Wind and Solar Energy Storage
Substation Backup Power and Mobile Power Supply Units
Charge and Discharge Systems for Lithium and Lead-Acid Batteries

In oilfield energy storage projects, how can the DC power stored in batteries be converted into AC power for grid connection while allowing bidirectional charge and discharge control?

The recommended setup is a combination of DC/DC Converter and PCS (Power Conversion System). The DC/DC Converter adjusts the variable voltage of battery packs (for example, from 200V–800V to a stable 750V) and enables bidirectional charge–discharge operation. The PCS then converts DC into grid-compatible AC (such as 380V or 10kV), allowing smooth interaction between the storage system and the grid. This setup supports daytime power supply and nighttime recharging, helping reduce electricity costs in oilfield operations.

How do DC/DC Converters improve system efficiency in large-scale energy storage stations?

They regulate voltage precisely across multiple battery clusters, maintaining system stability and preventing energy loss during conversion. Combined with PCS units, DC/DC converters enhance power quality, improve overall efficiency, and ensure reliable grid response during peak demand.

Founded in 1995, Shanghai Wenlida develops and manufactures advanced voltage regulation and power quality equipment designed to maintain stable grid voltage levels, and ensure efficient and reliable operation of industrial and utility power systems.

Related Manufacturies