DC/DC IGBT Hydrogen Power Supply

Name: DC/DC IGBT Hydrogen Power Supply
Brand: Hygen
SKU: 00003
Rating: 4.9 (52 reviews)

Full-control IGBT topology with single-stage DC/DC architecture. Liquid-cooled, modular redundant design, and excellent parallel scalability. Systems can be paralleled flexibly according to electrolyzer capacity needs. Designed for DC-coupled off‑grid hydrogen production, especially PV direct connection. Offers high efficiency (>99%), high reliability, high power factor, and low harmonics. Robust, easy to maintain, and adapts well to fluctuating DC input from renewables.

Performance characteristics

Single-stage DC/DC Topology

Direct PV-to-electrolyzer conversion, eliminating AC/DC stage losses. Ideal for solar-rich off-grid sites, achieving the highest system efficiency.

Wide Load Adaptability

Supports 10% to 120% power range, easily handling variable solar irradiance and electrolyzer operating points.

Modular Parallel Expansion

Redundant modular design with excellent current sharing, allowing system capacity to scale from 2MW to tens of MW by adding cabinets.

THDi ≤3% (input side)

Low harmonic reflection to DC source, maintaining power quality in microgrids and protecting upstream components.

Overall Efficiency ≥99%

Peak efficiency above 99% at half load, significantly lowering hydrogen production cost per kilogram.

≤100ms Dynamic Response

Millisecond-level response to PV output changes, effectively stabilizing the DC bus and protecting the electrolyzer from voltage/current surges.

Product Overview

DC-coupled 2MW DC power supply

DC output

Voltage range	0-700V
Current range	0-4000A (Be customized)
MAX. power	2MW
Voltage ripple	≤3%
Current-controlled precision	≤±1%（Steady state）
Voltage-controlled precision	≤±1%（Steady state）
Load response time	≤100ms（0% to 100% load）

DC input

Voltage range	0-800V
Voltage fluctuation range	≤±10%

System

Efficiency	≥99%（Half load above）
Cable configuration	Bottom for input and output
Control mode	CC, CV, CP
Size (W×D×H)	1.2m × 1.1m × 2m

Environmet

Cooling	Liquid cooling
Ambient temperature	-40℃～+45℃
Relative humidity	0%～95%（No condensation）
IP	IP54
Maximum altitude	4000m

Communication

Interface	RS485, TCP, AI, and AO
Protocol	Modbus RTU, Modbus TCP

Display

HMI	Touch Screen

Single-stage IGBT DC/DC converter for PV-direct and DC-coupled off-grid hydrogen production. Efficiency ≥99%, THDi ≤3%, <100ms response, 0-700V output, 100% liquid cooling. Compatible with PEM/ALK electrolyzers, modular from 2MW to multi-MW expansion. Fully customizable.

One-stage topology: DC/DC topology directly converts PV or battery DC power to stable DC for electrolyzers

What Can Hygen Power Do for You?

From customized solutions to lifelong support, we ensure every power system fits your project exactly.

Electrical parameters Match voltage, current, and power to your electrolyzer
Modular parallel Scale up to 100MW+ as your project grows
System integration Complete cabinet or containerized solutions for any installation scenario

Contact experts

Perhaps you would like to know more?

What is a DC/DC IGBT Hydrogen Power Supply and where is it used?

A DC/DC IGBT Hydrogen Power Supply converts DC input power (e.g., from solar PV, battery storage, or a DC microgrid) into stable, regulated DC output required for water electrolysis. It is designed for DC‑coupled off‑grid hydrogen production systems, especially PV‑direct configurations. By eliminating the AC/DC conversion stage, it achieves higher overall system efficiency (≥99%) compared to AC‑coupled solutions.

Which electrolyzers are compatible with your DC/DC hydrogen rectifier?

Our DC/DC IGBT Hydrogen Power Supply supports both PEM (proton exchange membrane) and alkaline (ALK) electrolyzers. The output voltage is continuously adjustable from 0 to 700V DC, covering the full operating range of both technologies. This makes it ideal for renewable‑only off‑grid sites where electrolyzer flexibility is key.

What is the efficiency of the DC/DC power supply, and why is it higher than AC/DC units?

The DC/DC unit delivers ≥99% efficiency at above half load. Because it uses a single‑stage DC/DC topology without an AC/DC rectifier, it eliminates the conversion losses associated with grid‑tied systems. For solar‑rich sites, this directly translates into more hydrogen per installed PV capacity and lower levelized cost of hydrogen (LCOH).

What input voltage range does the DC/DC IGBT power supply accept?

The DC input voltage range is 0 to 800V, with tolerance for fluctuation up to ±10%. This wide range allows direct connection to solar arrays (after combiner box) or battery banks, adapting to variable solar irradiance without needing additional DC‑link stabilization equipment.

How fast does the DC/DC converter respond to changes in solar power?

Load response time is ≤100ms from 0% to 100% load step. This fast dynamic response is essential for PV‑direct hydrogen production, where cloud cover can cause rapid power drops. The converter quickly adjusts to maintain stable output, protecting the electrolyzer from voltage/current transients.