Dynamic Uninterruptable Power Supply System

Curtis Power Solutions offers dynamic uninterrupted power supply systems from 120 kW to 2160 kw for a wide variety of applications.

Dynamic UPS systems (DUPS), sometimes referred to as rotary UPS technology, are driven by kinetic energy with electrical rotating machines providing the output voltage. They provide an “infinite” back-up power supply using diesel engines which provides perfect conditioned electrical power to critical consumers.

In Conditioning Mode, when the public power grid is available, an electromagnetic coil is used to eliminate current and voltage fluctuations that the power grid tends to produce. These voltage fluctuations are very frequent but are not perceived by 'normal' consumers. Today's sophisticated IT systems are increasingly sensitive, and a power grid fluctuation can cause their function to be disturbed. When that happens in a hospital, data center, or factory, that runs sensitive production processes, the consequences can be dramatic and involve huge financial losses. Dynamic uninterruptible power supplies are specifically engineered to withstand these demanding power supply challenges.

In Independent Mode, on utility power failure or voltage disturbance, the stored kinetic energy is retrieved and transferred to the synchronous machine, acting as a generator. This transfer happens seamlessly without interruption in a zero-second transfer to the critical loads. When a failure occurs, the engine starts and is connected to the synchronous machine by closing the electromagnetic clutch. The engine then provides the energy to the machine for an unlimited amount of time. The kinetic energy stored in the accu can be used to start the engine automatically if a start battery fails, ensuring that the engine and secondary power source start.

DUPS Features

• Lower TCO: It is more cost-effective, at medium and high-power ratings, reducing consumable electricity cost and maintenance.
• Smaller Footprint: Its compact design helps to reduce building construction costs and increase space for production and revenue generating purposes.
• Units up to 3,000 kVA: the current-carrying capability of electronic components does not limit DUPS. Their per-unit ratings are more significant, leading to a lower component count on higher power installations, resulting in a higher level of reliability and resilience.
• Optimal sustainability: Unlike DUPS systems, static UPS systems require heavy batteries and generate chemical waste. The energy from a DUPS system is immediately available to generate power when the engine is activated.
• Medium voltage systems: These systems are the perfect solution for medium voltage critical loads and when longer distances need to be covered. DUPS systems require less low voltage cabling, decreasing installation costs.