Bluelight Group Power Feed Back Unit
The RG series regenerative unit stands as a cutting-edge, next-generation power feedback solution engineered to revolutionize energy efficiency and operational performance in elevator systems. Integrating high-performance insulated gate bipolar transistors (IGBTs) with state-of-the-art pulse width modulation (PWM) control technology, this unit delivers exceptional energy-saving outcomes while fundamentally optimizing the thermal environment within elevator machine rooms when deployed in tandem with variable frequency drives (VFDs). Boasting a perfect blend of innovative engineering, top-tier functionality, robust safety, user-centric design, and remarkable cost-effectiveness, the RG series sets a new benchmark for regenerative power technology in vertical transportation applications.
◆ Utilizing advanced vector control technology, the RG series achieves millisecond-level precise control of the feedback current waveform, ensuring that the current output closely matches the ideal sinusoidal standard. This meticulous control mechanism drastically reduces total harmonic distortion (THD) to levels far below industry average limits, minimizing electromagnetic interference (EMI) with other electrical components in the elevator system. By mitigating harmonic-related wear and tear on the power grid and associated equipment, it extends the service life of the entire elevator electrical system and reduces the risk of unexpected downtime.
◆ Employing an advanced space vector pulse width modulation (SVPWM) method, the unit outperforms traditional sinusoidal PWM (SPWM) technologies by a significant margin in terms of energy feedback efficiency. Unlike conventional methods that suffer from higher switching losses and lower conversion rates, SVPWM maximizes the utilization of DC bus voltage, enabling up to 98% energy feedback efficiency. This translates to substantial reductions in overall power consumption for elevator operations—especially in high-traffic buildings where elevators frequently operate in regenerative modes (such as descending with heavy loads or ascending with light loads)—resulting in tangible cost savings on electricity bills over the system’s lifespan.
◆ Equipped with a comprehensive suite of protection functions and an intelligent real-time processing system, the RG series ensures uncompromising operational safety and dramatically cuts down on long-term maintenance costs. The protection module covers overvoltage, undervoltage, overcurrent, short circuit, overheating, and IGBT fault protection, instantly triggering protective actions to isolate the unit in the event of an anomaly. Meanwhile, the intelligent processing system continuously monitors key operational parameters, providing predictive maintenance alerts for potential issues such as component aging or abnormal temperature fluctuations. This proactive approach eliminates the need for frequent manual inspections and reduces the frequency of costly emergency repairs, enhancing the overall reliability and uptime of the elevator system.
◆ Featuring automatic polarity adaptation for both input and output terminals, the RG series streamlines the installation process and eliminates the risk of wiring errors. Traditional regenerative units often require meticulous manual verification of terminal polarity to avoid equipment damage, a process that is time-consuming and prone to human error. With this automatic adaptation function, technicians can connect the terminals without the need for complex polarity checks, cutting installation time by up to 30% and accelerating the commissioning process for new elevator installations or retrofits.
◆ Designed with a highly intuitive user-friendly interface paired with a high-resolution liquid crystal display (LCD) screen, the RG series simplifies debugging and day-to-day operation for both field technicians and facility managers. The LCD screen provides clear, real-time visualization of critical operational data, including feedback current, voltage, power efficiency, and fault codes. The interface supports both manual and automatic debugging modes, with step-by-step guidance for parameter configuration—such as setting feedback voltage thresholds and current limits—making it accessible even to users with limited technical expertise. Additionally, the interface allows for data logging and export, facilitating performance analysis and troubleshooting.
◆ Outfitted with a complete set of configurable external input and output terminals, the RG series offers unparalleled flexibility to adapt to diverse elevator system configurations and user requirements. These terminals support seamless integration with building management systems (BMS), enabling centralized monitoring and control of the regenerative unit alongside other building equipment. They also allow for custom trigger settings, such as linking the unit’s operation status to elevator load sensors or emergency stop systems. Whether for standard passenger elevators, heavy-duty freight elevators, or high-speed elevators in skyscrapers, the expandable terminal design ensures the RG series can be tailored to meet the unique demands of any application.
