Linearer Energiespeicherpuffer

Schutz für das Stromnetz: In Österreich wird zurzeit ein neu entwickelter Schwungradspeicher als Puffer für kurze, schnelle Stromschwankungen im Netz

What is the design and operation of power buffer?

V. CONCLUSIONS A new scheme for the design and operation of power buffer is proposed. Under normal network condition, the buffer is to operate under constant power mode. When voltage sag occurs, the buffer is switched into constant impedance mode, so as to mitigate the negative impact of the constant load on voltage stability of the system.

How much power is connected to a buffer system?

A constant power load of 100 kW is connected to the buffer. Incidents of 10- cycles upstream unbalanced faults are used to study the performance of the buffer system. The data of the buffer system is taken from while that of the battery is from . Due to space reason, only a sample of the simulation results will be included here.

What is a power buffer-connected load scheme?

Fig. 1 A schematic diagram of a power buffer-connected load scheme. When voltage sag occurs, the power buffer is designed such that the buffer-load combination is switched from the constant power mode to one of constant impedance.

What is the control method of a power buffer?

The control method of the power buffer is switched from constant power mode to constant impedance mode after the sag is confirmed, 2 ms from sag initiation. The simulation results are shown in Fig. 7. Fig. 6 Damping ratio and dominant pole versus battery discharge current.

How does a power buffer work?

POWER BUFFER OPERATIONAL PRINCIPLE There are several topologies proposed for the power buffer. The specific version shown in Fig. 1 is comprised of a three- phase boost converter, controlled through the PWM switching scheme and a series RL filter. The filter controls the level of harmonic generated by the converter.

What is active dynamic power buffer concept?

To mitigate the aforementioned voltage stability problem, active dynamic power buffer concept has been proposed to decouple the load dynamics from the upstream system during fault.