Highly customized, grid-tied power conversion technologies optimized for Swedish variable speed generators, offshore wind, and multi-source solar-hydro microgrids.
Sweden stands as a global beacon for clean energy, generating over 45% of its total electricity from hydro power. However, Sweden's aging hydroelectric infrastructure, mostly situated on northern rivers like the Lule, Indalsälven, and Ångermanälven, faces massive modernization demands. Historically designed for constant-speed operation with fixed grid injection, these legacy stations are struggling to cope with the volatile supply injected by rapid wind and solar expansions across the Nordic synchronous grid (Folkets el).
Today, Swedish grid operators (Svenska kraftnät) demand strict compliance with new ancillary service models, including FCR-N (Frequency Containment Reserve for Normal operation) and FCR-D (Frequency Containment Reserve for Disturbance). This has triggered a nationwide transition from traditional direct-on-grid configurations to variable-speed generator architectures controlled by advanced back-to-back AC/AC and DC/AC power converters.
By decoupling the turbine speed from the grid frequency, our converter technologies enable Swedish plants to optimize water-head efficiency during seasonal flow variations, mitigate mechanical stress on Kaplan and Francis runners, and response to grid frequency fluctuations in milliseconds.
On a global scale, the International Energy Agency (IEA) highlights that over 120GW of existing hydro capacity requires electrical and control retrofitting. The shift towards decentralized energy systems (microgrids, hybrid solar-hydro storage, and offshore wave/tidal farms) requires converters to possess intelligent active damping, multi-input energy management, and extreme thermal resilience in sub-zero climates.
Engineered to perform in northern sub-zero climates and comply with strict European grid-connected standards.
Many run-of-river stations in Dalarna and Värmland experience severe seasonal flow drops during Swedish winters. Installing our variable-speed converters enables turbines to operate efficiently under partial loads, maximizing annual energy yield (AEP) by up to 15%.
Deploying our bidirectional 500kW grid-tied converters allows wind turbine installations to store excess off-peak power directly into pumped-hydro reservoirs or battery banks, offering immediate peak shaving capacities to Swedish industrial complexes.
For Swedish marine installations along the western coastline, our IP68-rated tidal power converters handle the high-torque, low-speed variable inputs of ocean currents, stabilizing outputs into grid-compatible 400V/50Hz power.
Combining localized engineering R&D with China's unmatched clean energy manufacturing infrastructure.
Jinan Deming Power Equipment Co., Ltd. is a nationally recognized high-tech enterprise established in 2004, specializing in the research, development, production, and service of renewable energy power equipment and advanced power testing solutions. The company holds ISO9001:2015 certification and has been recognized as a high-tech enterprise by the Chinese government multiple times (2015, 2018).
Our competitive advantage lies in our rigorous R&D investment. With a dedicated 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. The company has completed 17 R&D projects in the last three years with 16 scientific and technological achievements transformed into commercial products.
Deming's products have been exported to 120+ countries including Germany, Japan, the United States, UK, Canada, Australia, and Brazil, and the company has established cooperative relationships with Fortune 500 enterprises. Our main products include wind/solar controllers, inverters, frequency converters, and high-power bidirectional DC test power supplies and battery simulators ranging from 150kW to 500kW.
Sweden partners benefit from our comprehensive system testing before dispatch. Our facilities are equipped with professional Semiconductor Characteristic Plotters, Power Quality Analyzers, LCR AutoTesters, and High-Voltage DC source simulators to ensure every converter complies perfectly with Nordic grid guidelines (SS-EN 50549).
Engineering perspectives on efficiency, harmonics, and thermal management under critical environments.
By employing AFE topology based on high-frequency IGBT or SiC MOSFET switching, Deming converters ensure a Total Harmonic Distortion (THD) of less than 3% at full rated output, protecting fragile sub-station transformers in remote Swedish forest regions.
Integrating bidirectional converters allows hydroelectric stations to function as dynamic grid regulators, reversing power flow to power variable-speed pumps during periods of high wind output and low power tariffs.
Equipped with smart liquid cooling loops or internal climate-controlled heaters, our converters prevent condensation and component degradation down to -40°C, a prerequisite for stable Swedish winter operations.
Purchasing power electronics from overseas requires robust supply chain coordination. Deming optimizes this by offering tailored export documentation, complete CE compliance certificates, and grid-compliance testing reports prior to sea/air transit from our factory to Swedish Baltic Sea ports or inland logistics hubs like Gothenburg and Stockholm. Our strategic relationships with international forwarders guarantee cost-effective, custom-crated shipping options, completely minimizing transit-related mechanical vibration damage.
Expert technical answers regarding compliance, efficiency, and customized engineering options for northern European markets.
Discover our comprehensive export catalog. Built with high-efficiency permanent magnet controls, grid-tied and off-grid configurations.
Demin Power
