Abstract:
An automation system with at least one automation object having a first component for generating a system functionality, a second component for generating a base functionality, and a third component for managing at least one module. Each module has a first module component for generating a system functionality, a second module component for generating a base functionality and a third module component for generating a technological functionality.
Abstract:
The invention relates to a modular converter system (2). According to the invention, the modular converter system (2) has a basic converter device (4) and at least one additional converter device (6), wherein said devices (4, 6) can be plugged laterally one beneath the other by means of their power-supply and load busbars (8, 10) and by means of a communication line (12). A modular converter system (2), which can be matched individually to any desired power output which may be required without a great deal of complexity, can therefore be achieved.
Abstract:
A drive system includes a central power supply with a line-commutated converter and a DC/DC converter connected downstream of the line-commutated converter, and a plurality of inverters, each inverter having an output connected a load, for example a motor, and a DC input connected to a regulated DC voltage output of the central power supply. Buffer capacitors are connected across the respective input and output of the DC/DC converter. The drive system further includes an energy recovery device with an input connected to the controlled voltage output of the central power supply and an output connected to at least two input terminals of the line-commutated converter. This type of drive system eliminates a bulky brake circuit.
Abstract:
In a pressure sensor for detecting the air pressure in the interior of tubeless tires of motor vehicles, on a rim having two edge beads extending around its outside and a drum-like base, to facilitate mounting and provide malfunction-free, exact detection of pressure it is provided that the pressure sensor (10) is disposed in a bore (9) of the preferably radially inner section (5) of a bead (3), and in particular the longitudinal axis (43) of the pressure sensor (10) forms an acute angle with the axis (44) of the rim.
Abstract:
In a method for operating an automation device having an internal finite state machine, a mapping unit, an internal data interface operatively connected for flow of information between the internal finite state machine and the mapping unit, and the mapping unit operatively connected for flow of the same information between the internal data interface and an external data interface of a communication module, state information of the internal finite state machine is routed to the mapping unit via the internal data interface, separate state information is derived from the state information received by the mapping unit, and the mapping unit then provides the separate state information to a communication unit of the communication module.
Abstract:
A converter (34) includes a control device (6) connected at its output to a pulse width modulator (8), which is connected on the output side to control inputs of a load-side inverter (10), and a current measuring device (4), which is connected on the input side to two terminals of the load-side inverter (10), and on the output side to two measurement inputs of the control device (6). Further provided is a two-channel damping control circuit (38), whose control-circuit channels (56, 58) are each connected on the input side to an output of the current measuring device (4), and on the output side to an inverting adder (54), and the outputs of the two control-circuit channels (56, 58) and the output of the inverting adder (54) are connected to inputs of the pulse width modulator (8). As a result, a converter (34) is realized that can actively dampen a connected undamped inverter output-filter (36) without causing an additional control dead time.
Abstract:
In a method and device for monitoring speed, in particular for monitoring the rotation speed of an electric machine, two processors are employed which monitor the speed using different checking modes and cross-compare results. The first processor executes a conventional control algorithm and checks on the basis of an estimated or measured value of the speed whether a speed limit has been exceeded. The second processor determines the actual output frequency, which is also indicative of the speed, of a converter either from actual current values, which are measured anyway, or by reconstructing the voltage from control signals of transistors. Both processors thus monitor if a rotation speed limit has been exceeded and/or execute corresponding response actions. The method also recognizes faults in the power section based on the evaluation of the phase current. The system can also be designed to manage pulling loads.
Abstract:
The invention relates to a method and an apparatus (2) for determining an operating state of a motor (4) which is connected to a rigid network (6) and has a rotation speed sensor. According to the invention, phase voltages (ul, u2, u3) of the rigid network (6) which are applied to the connecting terminals (L1, L2, L3) of the motor (4) are used to determine its frequency (fN) and amplitude (U1), a measured shaft rotation speed (n) and a number of pole pairs (p) of the motor (4) are used to determine the slip (s) of the motor (4) as a function of the determined network frequency (fn), and the mechanical shaft power (Pmech) is calculated as a function of this slip (s), of the determined amplitude (U1), of an internal voltage (U11) in the motor (4) and of motor-specific parameters (X1, X2, Xh, R2, R1, Rfe, &sgr;). A method which is independent of power is thus obtained for determining an operating state of a motor (4), without any need to detect the actual current value.
Abstract:
A chip inductance is composed of a wound coil core (1) that is arranged erect on a system carrier (6). Perpendicularly residing clips (7) are located on the system carrier, whereby the coil core (1) is arranged within the space formed by the clips. The terminals are thereby located essentially outside the space existing between the end face planes of the coil core (1).
Abstract:
An active optical current-measuring system (2) including a sensor (4) which is provided with current connecting busbars (12, 14) and a light guide connector. The sensor includes two parts (8, 10) which, when assembled, form a hollow cavity (16) within which an electronic sensor component (6) is mounted. The electronic sensor is connected at the output to the light guide connector. A measuring resistor is provided as the sensor (4). The current-measuring system (2) is also capable of detecting direct currents. The electronic sensor component,(6) is mechanically protected and electromagnetically shielded.