Hijoy provides engineering, retrofit and system integration solutions for ship power stations, blackout risk control, dynamic reactive power compensation, automation retrofit and remote vessel support.
Our work focuses on practical retrofit paths that can be installed, commissioned and maintained onboard.
Fast reactive power support for marine power stations, improving power factor, reducing voltage dips, stabilizing generator operation, and supporting large dynamic loads such as ballast pumps, bow thrusters, cranes and scrubber pumps.
Battery Energy Storage System with PCS control for blackout risk reduction. The system supports selected critical loads during blackout events while maintaining safe isolation from the main switchboard and existing emergency generator logic.
Retrofit and replacement solutions for obsolete ship automation systems including Valve Remote Control System, Tank Level Gauging System, bilge alarm integration, AMS communication and HMI/PLC modernization.
Troubleshooting and engineering support for AVR, governor, PMS, generator protection, load sharing, synchronization, droop characteristics and large motor starting impact analysis.
Practical vessel-side diagnostic support for VFDs, starters, UPS/DC systems, motor insulation, control circuits, communication faults and abnormal alarms.
Design and deployment support for vessel remote access, onboard monitoring servers, video systems, SIP communication, private relay servers and controlled fleet maintenance access.
Hijoy’s concept separates live-bus stabilization from blackout survival. SVG improves power quality while generators are online. BESS + PCS supports selected critical loads when blackout occurs, using controlled isolation and mode switching to avoid conflict with the vessel’s original emergency generator sequence.
Fast dynamic reactive compensation to reduce voltage dips, improve power factor and support generator stability during changing loads.
P/Q follow mode during normal operation and V/F support mode after blackout for selected critical loads, subject to battery and PCS capacity.
Fast compensation concept using multi-source generator current sensing and station-level reactive power control to reduce voltage fluctuation and improve generator utilization.
Layer 1: SVG stabilizes the live bus. Layer 2: sodium battery BESS + PCS supports selected critical loads after blackout without changing the vessel’s original emergency generator philosophy.
Modern PLC/HMI-based replacement for obsolete control systems with interface restoration to ship monitoring systems and practical onboard testing procedures.
Hijoy combines marine electrical knowledge, automation retrofit experience and practical commissioning logic to deliver solutions that shipowners and vessel crews can actually use.
For marine electrical retrofit, SVG, BESS blackout backup, automation replacement, troubleshooting or technical documentation support, please contact us.