Traditional AC-coupled systems convert PV → AC → DC twice on the way to a battery or charger. DC-coupled systems share a common DC bus — fewer conversions, higher efficiency, lower BOS cost.
PV array
Boost MPPT
DC bus + Battery
Bi-directional buck/boost
EV chargers
Four properties built into every EDCS module — whether sized for PV input, battery management, or EV charging output.
Constant-V · bi-directional constant-V · constant-I · constant-power · boost MPPT · buck MPPT — all firmware-selectable. Same hardware works as PV input converter, battery DCDC, or EV charger output. One spare part across roles.
Three-level topology with optimized switching frequency. Stable efficiency across the full power range — not just at the spec sheet peak point. Translates directly to less heat, less cooling cost, more energy delivered to load.
Up to 16 modules paralleled on a common DC bus — gives 800-1000 kW per cluster from 50/63 kW modules. Master-slave coordination via CAN; loss of any single unit triggers automatic load redistribution.
Specialized pre-charge mode for connecting deeply-discharged batteries to a live DC bus without inrush damage. Critical for sodium-ion batteries (which can sit at 0V) and for cold-weather LFP recovery.
For full technical parameters across communication, control, environment, and certifications, download the complete datasheet below.
From procurement shortlists to commissioning — the ten questions we hear most often during technical due diligence.
Yes. The EDCS50-M-MH and EDCS63-M-MH are identical hardware — they switch operating modes via firmware configuration. One physical SKU plays three roles in a DC-coupled system:
(1) Boost MPPT mode for PV input — tracks PV array maximum power point. (2) Bi-directional constant-V mode for battery — handles charge and discharge across full SoC range. (3) Buck mode for DC fast charging output — regulates output voltage to charger requirements.
This means one spare part covers your whole DC bus — substantially simpler than stocking three different inverter SKUs.
Same form factor, same operating modes, same firmware. Only difference is rated power: 50 kW continuous vs 63 kW continuous. Use 63 kW where you need maximum density per cabinet position; use 50 kW where cost is more sensitive than power per slot.
Both can be mixed in the same DC bus cluster — the master controller handles unequal capacities automatically.
Yes — the EDCS series specifically supports sodium-ion through two features other DCDC products often lack:
First, the LV side voltage range goes down to 0 V (vs typical 200 V minimum). Sodium-ion cells can sit at very low voltage (close to 0 V) without damage, but most DCDC modules can’t reconnect to a 0-V battery without inrush damage.
Second, the dedicated zero-V pre-charging mode safely brings a deeply discharged battery up to operating voltage. We’ve validated this in field deployments since 2024.
For PV-to-battery path: AC-coupled goes through PV inverter (98%) + battery PCS (98%) = ~96% round-trip into the battery. DC-coupled goes through one DCDC stage at 99% = roughly 3-4% efficiency advantage. Over 20-year asset life this translates to material energy savings.
For PV-to-EV-charger path the advantage is similar. AC-coupled needs PV inverter + EV charger AC input + EV charger internal DC stage. DC-coupled goes PV → DC bus → buck stage → EV battery, eliminating two conversions.
MPPT operates from 200 V to 1000 V on the HV side, with full power tracking across 400-950 V. MPPT accuracy is > 99.5% (industry-standard test conditions). Tracking algorithm responds to irradiance changes within 50 ms — fast enough for cloud-edge transitions without missing energy harvest.
For PV strings outside the 400-950 V optimal range, contact engineering — alternative module configurations or transformer adaptation may be needed.
Yes. A typical hybrid site has, on the same DC bus: 4 × EDCS in PV-input MPPT mode, 4 × EDCS in battery bi-directional mode, and 4 × EDCS in EV charger output mode — all 12 modules sharing the bus voltage and coordinated by the master EMS.
The DC bus voltage is set by the battery DCDC (typically 750 V or 1000 V depending on battery configuration). PV-input modules track battery DC bus voltage; EV-output modules buck down to charger requirements.
Explore our real-world case studies to see how our energy Storage solutions empower global industries.
Project Overview Project Background Located in Harare, Zimbabwe, the SPAR supermarket faces frequent regional load shedding and unreliable grid power, affecting essential loads such as refrigeration, lighting, checkout equipment, and food preparation. To improve power supply reliability, the project integrates solar PV, battery storage, the utility grid, and a diesel
Project Overview Project Background Located in Kuala Lumpur, Malaysia, this fish farm faces limitations in its existing grid supply. With an available grid capacity of approximately 42 kW, the site cannot fully meet the electricity demand of production equipment, including pond aerators. To address the power shortage and reduce the
Project Background In many regions across Southeast Asia, grid access is limited or unreliable, creating significant barriers for industrial facilities that require continuous electricity. In the outskirts of Manila, Philippines, a refrigeration equipment factory faced a critical challenge: the site had no access to the utility grid, making stable power
Project Background A residential household in Hamburg, Germany faced challenges with high electricity demand, expensive energy costs, and frequent power outages. To address these issues, the household deployed an integrated solar and energy storage system powered by enjoypowers. This solution effectively reduces electricity costs and ensures a reliable, uninterrupted power
To tackle peak electricity costs and enhance energy sustainability, a textile manufacturer has deployed a robust commercial energy storage system powered by Enjoypowers’ PCS（Power Conversion System） modules. Operating 24/7 with high electricity consumption, the factory benefits significantly from a 100KW/215KWh Battery Energy Storage System (BESS), equipped with Enjoypowers’ advanced power conversion
As businesses worldwide face growing energy costs and the need to transition to more sustainable energy solutions, the demand for advanced energy storage systems (ESS) is rapidly increasing. At Enjoypowers, we are proud to offer cutting-edge Power Conversion Systems (PCS) that play a critical role in optimizing energy storage, improving
Tell us your grid code, load profile, and site constraints. Within 48 hours we’ll come back with a sized system, efficiency curves, a deployment timeline, and a first-pass bill of materials.