Patent ID: 11910579
Assignee: SIEMENS AKTIENGESELLSCHAFT
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  G | IPC G  H

Claim 7:
8. A conversion device supplied with an input power, the input power converted by the conversion device into an output power causing a power loss, the conversion device comprising:
a coolant circuit in which a coolant flows, the coolant circuit cooling the conversion device; and
a monitoring device configured to:
receive as a measurement value an inflow temperature at which the coolant is supplied to the conversion device;
determine a flow velocity at which the coolant flows in the coolant circuit based on operating data of the conversion device and/or the coolant circuit, a quantity of heat to be removed per unit of time by the coolant known to the monitoring device, a local temperature of the conversion device known to the monitoring device, and the inflow temperature;
compare the determined flow velocity with a limit velocity;
resort to a special reaction when the determined flow velocity reaches or exceeds the limit velocity; and
resort to either no reaction at all or to a normal reaction that is not the same as the special reaction as long as the determined flow velocity does not reach the limit velocity.