Abstract:
The invention relates to an energy transfer arrangement comprising multiple serially connected voltage sources, a hierarchical structure of energy transfer units having at least two first level energy transfer units and one second level energy transfer unit wherein each two or three neighboring voltage sources are connected to one of the first level energy transfer units and each two or three neighboring first level energy transfer units are connected to the second level energy transfer unit. A battery management system is adapted to control the energy transfer over each of the energy transfer units based on a state-of-health parameter for each voltage source. The invention relates further to a method of controlling said energy transfer arrangement.
Abstract:
Disclosed are systems and methods for improved cell-balancing circuits, back-up failure detection circuits and alarm extension for cells and modules of an energy storage system. One aspect of the invention comprises an energy storage device cell balancing apparatus. The apparatus comprises a first and a second dissipative component connected in series. The first dissipative component and the second dissipative component are coupled to an energy storage cell. The second dissipative component monitors a voltage of the energy storage cell and, if the voltage is at or above a reference voltage, the second dissipative component conducts a discharging current through the first and second dissipative components. The first dissipative component maintains a voltage drop across the first dissipative component that is proportional to the voltage of the energy storage cell. The second dissipative component maintains a constant voltage drop across the second dissipative component when conducting the discharging current.
Abstract:
There is provided an electric apparatus including a battery (6); a first pair of motors (3a, 3d) coupled with a first pair of wings and a second pair of motors (3b, 3e) coupled with a second pair of wings; and a first motor control circuitry (12ad) configured to control, the first pair of motors and a second motor control circuitry (12be) configured to control the second pair of motors. The battery (6) is configured to supply power to the first motor control circuitry (12ad) via a first power line, and the battery (6) is configured to supply power to the second motor control circuitry (12be) via a second power line.
Abstract:
The invention describes a traction power source for electric vehicles into a single unit. Specifically, the invention integrates several functions, such as the battery and inverter. In addition, further functionalities that are traditionally in separate units can be integrated into the system and efficiently performed by the same electronics, such as battery management and thermal management. The solution provides high efficiency, low cost, and increased reliability.
Abstract:
An apparatus is disclosed which comprises, one, a handle module that is attachable to a detachable shaft module for collectively performing a surgical procedure and, two, an inspection station for connection to the handle module when the handle module is not being used in a surgical procedure. The handle module comprises a rotary drive system for driving the detachable shaft module, an electric motor coupled to the rotary drive system for powering the rotary drive system, and a handle module processor circuit in communication with the motor. The inspection station comprises an inspection station processor circuit that communicates with the handle module processor circuit via a data connection when the handle module is connected to the inspection station. The inspection station further comprises a display in communication with the inspection station processor circuit for displaying information about handle module.
Abstract:
Gezeigt wird ein Umrichter, der eine Mehrzahl von in Reihe geschalteten steuerbaren zweipoligen Submodulen umfasst. Dabei umfasst zumindest ein Teil der genannten Submodule jeweils einen ersten und einen zweiten Submodulanschluss, einen ersten, einen zweiten, einen dritten und einen vierten steuerbaren Schalter, und einen Speicherzweipol, welcher einen ersten und einen zweiten Zweipolanschluss, einen Energiespeicher und eine steuerbare Schalteinrichtung umfasst, wobei die steuerbare Schalteinrichtung einen ersten ansteuerbaren Schaltzustand aufweist, in welchem der Speicherzweipol unabhängig von einer Spannung, die zwischen dem ersten und dem zweiten Speicherzweipolanschluss anliegt, keine Energie abgibt, und einen zweiten ansteuerbaren Schaltzustand aufweist, in welchem der Speicher des Speicherzweipols Energie aufnehmen oder abgeben kann. Das Submodul als Ganzes hat einen ansteuerbaren Durchleitungszustand hat, in dem die steuerbare Schalteinrichtung des Speicherzweipols den genannten ersten Schaltzustand einnimmt, und die ersten bis vierten Schalter so geschaltet sind, dass ein Strom auf zwei parallelen Zweigen durch das Submodul fließt.
Abstract:
A surgical apparatus is disclosed which comprises a handle module and a detachable shaft module for collectively performing a surgical procedure. The handle module comprises a rotary drive system for driving the detachable shaft module, an electric motor coupled to the rotary drive system for powering the rotary drive system, one or more sensors, and a handle module processor circuit in communication with the one or more sensors and the electric motor. The handle module processor circuit is programmed to control the electric motor. The handle module processor circuit is also programmed to track and/or count an end-of-life parameter for the handle module based on input from the one or more sensors.