High-efficiency systems designed to conform with EU electrical compliance and withstand harsh industrial and marine environments across Bulgaria.
Specifically engineered for Bulgarian deep-water marine berths, ensuring seamless grid conversion with forced convection cooling and advanced galvanic isolation.
Designed for heavy duty maritime dry-docks along the Black Sea coast. Features variable voltage control and 0.96 high efficiency factor under full load conditions.
Flexible wide-voltage testing capability matching European ESO requirements. Integrated with forced convection cooling and smart diagnostics.
Excellent voltage regulation and harmonic attenuation. Configured specifically to support international vessels docking at Burgas and Varna.
As a strategic logistics gateway along the Trans-European Transport Network (TEN-T) Corridors, Bulgaria's port infrastructure at Port of Varna and Port of Burgas is undergoing significant modernization. The European Green Deal’s strict emission targets require commercial vessels to shut down auxiliary diesel generators while berthed, prompting a rapid transition to shore-to-ship power (also known as cold ironing).
Bulgarian ports, industrial manufacturing zones in Sofia, Plovdiv, and Ruse, and energy distributors are adapting to a new standard of electrical management. This transition requires rugged, high-capacity AC power sources and static frequency converters to bridge the gap between regional 50Hz utility grids and international marine/aviation systems operating at 60Hz or 400Hz.
Additionally, Bulgaria's local industrial manufacturing sector is experiencing growth in automotive parts, electrical machinery, and renewable energy integrations. Reliable AC power sources are crucial for conducting quality control tests, simulating grid disturbances, and export validation of home electronics destined for international markets.
Engineered to comply with international IEC and IEEE standards, securing continuous, high-efficiency power delivery.
| System Configuration | Applicable Input (Bulgarian Grid) | Adjustable Output Scope | Efficiency Rate | Key Industrial Applications |
|---|---|---|---|---|
| Static Frequency Converter | 380V/400V AC, 3-Phase, 50Hz | 110V-460V, 60Hz (Constant) | ≥ 96% | Industrial machinery testing, imported US/Japanese motor drives. |
| Shore Power Connection System | 3-Phase 10kV / 6kV Grid Supply | 380V/440V/660V, 50Hz/60Hz | 96% - 98% | Cold ironing berths at Port of Varna and Port of Burgas. |
| Aviation Power Unit | 380V AC, 3-Phase, 50Hz | 115V / 200V AC, 400Hz | ≥ 95% | Military bases, aviation maintenance facilities, and radar stations. |
| Variable Voltage/Frequency Source | 300V - 1000V DC or AC Input | 24Hz - 400Hz Variable Output | ≥ 96% | Renewable wind/solar simulation, motor testing laboratories. |
Leading technological shifts in energy transmission, power electronics, and sustainability.
Global manufacturers are shifting from traditional silicon IGBTs to Silicon Carbide (SiC) semiconductor switches. This innovation reduces switching losses, enhances thermal management, and drives efficiency levels beyond 97% in static converter systems.
Advanced AC sources now facilitate bidirectional power testing. In regenerative test benches, energy fed back from motors or solar inverters is clean-filtered and pushed back to the local utility grid, saving up to 80% of test facility electricity costs.
For mission-critical applications like maritime shore-to-ship supply, modular designs are standard. If a single converter cell encounters an issue, the system continues running at partial capacity, preventing complete operational blackout.
Established in 2004, Jinan Deming Power Equipment Co., Ltd. is a nationally recognized high-tech enterprise specializing in the research, development, production, and service of renewable energy power equipment and advanced power testing solutions.
Our company holds ISO9001:2015 certification and has been recognized as a high-tech enterprise by the Chinese government multiple times (2015, 2018). With a dedicated R&D team of 16 engineers including doctoral supervisors and master's degree holders, Deming invests no less than 20% of annual sales revenue into technology development.
Having completed 17 R&D projects in the last three years with 16 scientific and technological achievements transformed into commercial products, Deming's products are trusted in 120+ countries including Germany, Japan, the United States, UK, Canada, Australia, and Brazil, with established cooperative relationships with Fortune 500 enterprises.
Rugged static converters and shore power substations engineered to international standards.
Offers wide variable voltage and frequency ranges (24-400Hz). Integrates high-efficiency thermal management to resist Black Sea maritime corrosion.
Converts standard 50Hz Bulgarian utility power to steady 60Hz. Designed for importing US and Asian electronic goods testing.
An IP56-certified deck connection junction box built to withstand tough sea-spray environments in Bulgarian shipyards.
Turnkey high-voltage shore substation, bringing centralized management and power-factor correction to port authority projects.
Designed for mega container ships and cruise liners. Supports quick-switching synchronization to prevent ship blackouts during transfer.
Ideal for grid voltage simulation and testing imports. Provides highly stable and clean sine-wave output.
A heavy-duty converter ideal for driving foreign manufacturing lines within Plovdiv and Sofia free zones.
Advanced double conversion topology isolating shipyard machinery dynamics from the local municipal grid.
Ultra-high capacity electrical systems for heavy industrial infrastructure and large shipboard retrofits.
Compact design optimized for servicing support fleets and tugs in Varna and Burgas bays.
Megawatt-class shore power station configures multiple output bays to supply energy to multiple ships at once.
Fully customizable industrial containerized station for heavy-duty shipyards. Standard PLC monitoring integrations.
Delivers stable conversion for bulk carriers, Ro-Ro ships, and containers. Designed to resist salt-fog corrosion.
Strategic vision for integrating green energy, digitalization, and high-reliability systems by 2030.
By integrating local solar and wind resources near Burgas directly into converters, ports can run net-zero shore connections. Future systems will feature high-voltage DC bus links to minimize efficiency losses.
To comply with stringent EU utility guidelines regarding grid feedback, active front end technology eliminates input current harmonics, achieving a near-unity power factor (PF ≥ 0.99) and protecting regional substation equipment.
Deming power systems integrate Modbus TCP/IP, Profinet, and cloud logging. Operators at remote stations can track system efficiency, temperature indicators, and load profiles in real-time via tablet or PC dashboards.
Clear answers to common questions about compliance, technical integration, and system specifications.
Connect with our technical design team to discuss frequency conversion, shore power stations, or customized testing equipment tailored for the Bulgarian market.
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Demin Power