INVT GD300L Elevator Drive Boosts Quiet, Reliable Operation at Pinacoteca de São Paulo Brazil

Background Introduction

The Pinacoteca de São Paulo, one of Brazil’s oldest and most prestigious art museums, has been a cultural landmark since its establishment in 1905. With high daily visitor traffic, the museum requires elevator systems that provide quiet operation, flawless reliability, and seamless safety features. To meet these demands, INVT GD300L elevator drive was chosen for its optimal performance tailored for sensitive environments.

The elevator system is a machine-room-less (MRL) steel-frame model, serving three floors with a rated speed of 1 m/s and a capacity of 2.4 tons (4:1 traction ratio). Equipped with the INVT GD300L elevator drive, this elevator has been in stable operation for nearly five years, providing excellent performance in ride comfort, operational smoothness, and energy efficiency.

Customer Needs

In high-end public spaces such as art galleries and museums, the elevator system must meet the following key requirements:

1.    Quiet and Smooth Operation: The elevator must operate with minimal noise to ensure the ambiance of the museum is not disturbed.
2.    Safety and Reliability: The system must be equipped with powerful fault-handling and emergency operation capabilities to ensure continuous service, even during power fluctuations.
3.    Efficient Energy Management: Given the high frequency of use, the elevator system must provide exceptional energy efficiency while maintaining safety and comfort.

INVT Solution 

To meet the needs of the museum, INVT provided the GD300L elevator drive with the following key features:

•    Advanced Torque Compensation Algorithm: This eliminates jolts during starting and stopping, ensuring smooth acceleration and deceleration.
•    Open and Closed-Loop Vector Control Support: The GD300L supports both asynchronous and permanent magnet synchronous motors, making it adaptable to different motor types.
•    Emergency Rescue Operation: In the event of a power outage, the system can continue operation with an AC220V UPS, ensuring elevator operation in emergencies.
•    Compatibility with Multiple Encoder Types: The system supports incremental, SIN/COS, absolute, and UVW encoders, ensuring precise control and system stability.
•    Forced Deceleration Protection: This feature prevents overtravel at the top or bottom of the elevator shaft, ensuring safety during operation.

The elevator system configuration is as follows:
•    Elevator Drive: GD300L-011G-2 (1 unit)
•    PG Card: EC-PG102-05-T supporting DC5V SIN/COS signals
•    Motor: 7.6 kW, AC220V Permanent Magnet Synchronous Motor
•    Encoder: ERN1387 SIN/COS encoder
•    Braking Unit: DBU100H-060-2 (1 unit)
•    Brake Resistor: 10Ω / 4500W (1 unit)

Value of the Solution

The INVT GD300L drive provides the following significant advantages:
•    Precise Sensorless Vector Control: Ensures smooth speed regulation, eliminating jerks during start and stop, improving ride comfort.
•    Advanced Torque Compensation: Eliminates startup lag, even under load, enhancing passenger comfort and protecting mechanical components.
•    Ultra-Quiet Operation: Ensures a quiet environment in the museum, preserving the tranquility of the gallery and not disturbing visitors.
•    Energy Efficiency: The GD300L drive optimizes energy management in high-frequency use, reducing operational costs and increasing overall system efficiency.

This long-term successful application demonstrates the GD300L drive's reliability in demanding public buildings, making it an ideal choice for art galleries, museums, and other high-traffic cultural facilities.