This case study explores how dual thyristor modules support elevator UPS systems with precise phase control and surge resilience.

Elevator-Integrated UPS Case Study Using Dual Thyristor Modules
1. Facility Overview: Business Tower Emergency System
In a downtown high-rise, UPS systems were redesigned to support over a dozen elevators, each with unique load demands and priority settings. Engineers sought an integrated backup that could handle frequent transitions while maintaining ride quality and safety.
2. Choosing Dual Thyristor Modules
To provide bidirectional current control and eliminate lag during switchover, dual thyristor module assemblies were implemented. These supported industrial phase control, vital for synchronizing with each elevator's servo drive and minimizing vibration during backup transitions.
3. Power Efficiency through Smart Design
Modules featured low on‑state voltage, reducing electrical losses during continuous conduction. In a UPS setting, this improved battery efficiency and extended runtime by 8% across all load tiers.
4. Handling Mechanical Startups and Surges
When elevators switch from idle to operation during backup, startup surges are intense. The chosen thyristor modules were rated for High surge current, absorbing mechanical load spikes without triggering safety trips or system delays.
5. Compact Integration in Limited Panels
Due to space constraints in legacy panels, only compact package components could be accommodated. The thyristor modules fit seamlessly within the UPS enclosures, allowing full deployment without redesigning cabinet architecture.
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