Explore our high-reliability catalogue spanning isolated DC/DC converters, pure sine-wave DC/AC inverters, and heavy-duty industrial AC/DC power supplies designed for continuous operational availability.
Compact cup-holder design delivering 200W continuous AC 220V output with universal socket and precision DC-DC auxiliary regulation for mobile service engineering fleets.
High-surge capacity emergency power converter tailored for Aegean island solar installations, marine auxiliary cabins, and off-grid telecommunication relay stations.
Fully encapsulated PCB-mount power modules engineered for IoT telemetry gateways, sub-station metering electronics, and automated industrial controls.
Multi-input voltage inverter (12V/24V/48V/60V) featuring digital telemetry displays for field monitoring in isolated Mediterranean telecom towers and utility BESS units.
Ruggedized step-down voltage regulator delivering clean 5V DC output with dual USB interface for vehicle telematics, sensors, and commercial fleet automation.
Heavy-duty power inverter with integrated RF remote switching for enclosed cabinet mounting in remote pumping stations and railway auxiliary power cabinets.
Fully waterproof and dustproof step-up/step-down converter designed for harsh maritime environments, port logistics machinery, electric forklifts, and EV chargers.
Utility-grade 3000W off-grid inverter featuring programmable operating parameters, battery state-of-charge tracking, and clean sine wave output for heavy loads.
An in-depth white paper analysis on how soft-switching three-phase LLC/LCC topologies eliminate switching stress, reduce magnetics footprint, and achieve unparalleled power density for high-reliability Greek infrastructure applications.
Traditional hard-switched Pulse Width Modulation (PWM) topologies suffer from severe switching losses, electromagnetic interference (EMI) spikes, and extreme thermal dissipation during high-frequency operation. In high-power industrial applications, this limits switching frequencies, forcing engineers to use massive magnetics and cooling hardware.
Our Three-Phase Resonant Converters utilize interleaved LLC and LCC resonant tanks that achieve Zero-Voltage Switching (ZVS) across the primary switches and Zero-Current Switching (ZCS) across output rectifiers. By operating the semiconductor bridge above the resonant frequency, reactive currents naturally discharge switch output capacitances prior to turn-on. This eliminates switching loss spikes and drastically suppresses high-frequency conducted and radiated EMI.
By shifting power conversion across three phase legs spaced at 120-degree electrical intervals, ripple currents at input and output nodes naturally cancel out. The resulting output current ripple frequency is tripled while its amplitude is reduced by over 70% compared to single-phase converter topologies.
This 120-degree phase interleaving allows our Barcelona engineering team to integrate matrix planar transformers directly into high-layer PCB structures. Planar magnetics eliminate hand-wound copper variance, lower leakage inductance, and provide an ultra-compact mechanical envelope with direct thermal paths to aluminum cold-plate heat sinks—ideal for high ambient Mediterranean operational demands.
Deploying tailored power conversion systems to resolve the unique environmental, geographical, and grid infrastructure challenges faced by Greek engineering firms and system integrators.
Greek non-interconnected islands (NIIs) such as Cyclades and Dodecanese rely heavily on hybrid renewable energy microgrids. Our bidirectional resonant AC/DC battery chargers and DC/DC step-up converters stabilize volatile photovoltaic and wind generation inputs, delivering regulated DC bus voltages to battery banks while maintaining harmonic distortion under 2.5% during rapid solar transients.
In accordance with EU maritime decarbonization standards, the Ports of Piraeus and Thessaloniki are rapidly implementing "Cold Ironing" shore-to-ship power infrastructures. Our three-phase resonant rectifiers convert grid AC into isolated, low-noise DC and AC power, ensuring continuous electrical supply to berthed commercial vessels, ferries, and tugboats without degrading municipal grid quality.
Rolling stock operating on the Athens–Thessaloniki high-speed rail corridor demands rigorous compliance with railway power standard EN 50155. Our auxiliary power converters operate across wide catenary input ranges, providing robust power conditioning for HVAC, signaling, braking, and emergency backup systems while enduring severe mechanical shock and vibration (EN 61373).
How our European power electronics technologies align with Greece's National Energy and Climate Plan (NECP) and regulatory directives.
Greece aims for over 80% renewable electricity generation by 2030. Achieving grid stability with high renewable penetration requires utility-scale energy storage systems equipped with high-efficiency grid-forming inverters and dynamic DC/DC converters. Our three-phase resonant units deliver high power factor (>0.99) and ultra-low Total Harmonic Distortion (THD), allowing seamless coupling between utility solar farms and high-voltage ADMIE/DEDDIE distribution lines.
Summer heatwaves in Attica and Central Greece regularly push equipment enclosure internal temperatures past +50°C. Standard off-the-shelf power supplies suffer severe thermal derating or premature electrolytic capacitor failure. Premium PSU power systems are designed with high-grade 105°C long-life components, ceramic dielectric capacitors, and forced conduction cooling plates, guaranteeing full-rated power delivery up to +70°C ambient without thermal shutdown.
Under the EU's "Fit for 55" framework, passenger and freight ferries servicing the Aegean sea lines are transitioning toward hybrid and full-electric propulsion systems. Our lightweight, IP67-rated waterproof DC/DC converters and battery chargers provide the power density required to fit within tight vessel engine rooms while providing complete galvanic isolation between marine battery banks and hull grounds.
Greek industrial plant managers and utility operators are shifting from scheduled maintenance to telemetry-driven predictive health monitoring. Our power platforms integrate IoT communication gateways (Premium Vision), allowing real-time monitoring of output voltages, thermals, and ripple currents over encrypted cloud networks—reducing field service downtime in remote island installations.
Quantifiable performance metrics highlighting why three-phase resonant conversion represents the optimal choice for critical industrial deployments.
| Performance Parameter | Three-Phase Resonant Topology (Premium PSU) | Single-Phase Resonant Topology | Standard Hard-Switched PWM |
|---|---|---|---|
| Peak Efficiency | 98.4% | 94.5% - 95.8% | 86.0% - 90.5% |
| Switching Stress Mode | Full ZVS (Turn-on) & ZCS (Turn-off) | Partial ZVS / ZCS | Hard Switching (High dV/dt & dI/dt Stress) |
| Output Voltage Ripple | Ultra-Low (<0.3%) | Moderate (~1.2%) | High (~2.5% to 5.0%) |
| EMI / EMC Profile | Low Radiated EMI (Class B compliant) | Moderate Radiated EMI | High EMI (Requires Heavy external filtering) |
| Power Density (W/cm³) | Up to 3.5 W/cm³ (Planar Magnetics) | 1.8 W/cm³ | 0.9 W/cm³ |
| Thermal Derating Threshold | +70°C Full Load (Conduction Cooled) | +50°C Full Load | +40°C (Requires severe derating) |
Backing your critical power systems with 40+ years of European design, rigorous quality control, and custom engineering capabilities.
Founded in 1984 in Hospitalet de Llobregat (Barcelona, Spain), Premium PSU has designed and delivered over 1,000 custom power conversion systems for global leaders including Siemens, Alstom, CAF, ASML, Iberdrola, and Endesa.
With over 260 standard catalogue platforms covering 50 W to 72 kW in single modules, we provide modular scaling, parallel redundant N+1 configurations, and tailor-made electrical and mechanical enclosures within 16 to 28 weeks.
Every platform undergoes accelerated life testing (ALT), climatic thermal cycling (-40°C to +85°C), EMC emission and immunity testing, and vibration testing in accordance with EN 50155, EN 61373, EN 45545-2, and IEC 62368 standards.
Direct answers to common questions regarding standards compliance, custom lead times, local shipping, and support services in Greece.
Submit your input bus requirements, thermal limits, output voltage tolerance, and mechanical footprint. Our Barcelona engineering team will review your specification and deliver a qualified technical solution within 24 hours.