Abstract: Embodiments maintain a data pool that includes heterogeneous data sets, and receiving a first data batch of a data set from a data source into the data pool. Embodiments determine a current state of the data set based on a data set state diagram including a plurality of data set states, and identify a condition of the first data batch. Embodiments further set a data batch state for the first data batch, based on a data batch state diagram, and update the data batch state of a prior data batch received before the first data batch, based on the condition of the first data batch. Embodiments additionally transition the data set state diagram, based on the condition of the first data batch, to an updated data set state. Embodiments maintain a data state repository storing the data set state for each of the plurality of heterogeneous data sets.

Abstract: A method and an apparatus for decoupling output power of an inverter are provided. The method comprises: obtaining voltage amplitude instruction E* and voltage phase instruction ?* according to an output voltage and an output current of the inverter; obtaining an amplitude feedforward amount Eff and a phase feedforward amount ?ff according to an amplitude U of a grid voltage of the power grid, an amplitude E of the output voltage of the inverter, and a phase difference ? between the output voltage of the inverter[0] and the grid voltage; obtaining a reference voltage amplitude Eref according to the voltage amplitude instruction E* and the amplitude feedforward amount Eff, and obtaining a reference voltage phase ?ref according to the voltage phase instruction ?* and the phase feedforward amount ?ff; and regulating the output power of the inverter using the reference voltage amplitude Eref and the reference voltage phase ?ref.

Abstract: The present invention discloses a secondary control method and apparatus of parallel inverters in a micro grid, comprising: generating frequency and amplitude of fundamental voltage in the voltage instruction of inverter by droop control according to output voltage and output current of inverter to obtain a fundamental voltage instruction value; extracting voltage values and current values of a first and second AC signals from output voltage and output current of inverter, generating frequency instruction values of the first and second AC signals by droop control to obtain voltage instruction values of the first and second AC signals; regulating the output voltage of inverter according to the voltage instruction value of the first AC signal, the voltage instruction value of the second AC signal and the fundamental voltage instruction value.

Abstract: The present invention discloses a secondary control method and apparatus of parallel inverters in a micro grid, comprising: generating frequency and amplitude of fundamental voltage in the voltage instruction of inverter by droop control according to output voltage and output current of inverter to obtain a fundamental voltage instruction value; extracting voltage values and current values of a first and second AC signals from output voltage and output current of inverter, generating frequency instruction values of the first and second AC signals by droop control to obtain voltage instruction values of the first and second AC signals; regulating the output voltage of inverter according to the voltage instruction value of the first AC signal, the voltage instruction value of the second AC signal and the fundamental voltage instruction value.

Abstract: A method and an apparatus for decoupling output power of an inverter are provided. The method comprises: obtaining voltage amplitude instruction E* and voltage phase instruction ?* according to an output voltage and an output current of the inverter; obtaining an amplitude feedforward amount Eff and a phase feedforward amount ?ff according to an amplitude U of a grid voltage of the power grid, an amplitude E of the output voltage of the inverter, and a phase difference ? between the output voltage of the inverter[0] and the grid voltage; obtaining a reference voltage amplitude Eref according to the voltage amplitude instruction E* and the amplitude feedforward amount Eff, and obtaining a reference voltage phase ?ref according to the voltage phase instruction ?* and the phase feedforward amount ?ff; and regulating the output power of the inverter using the reference voltage amplitude Eref and the reference voltage phase ?ref.

Abstract: The aim of the invention is to reduce the weight and sizes of an electromagnetic retarder (1) for a vehicle by coaxially offsetting said electromagnetic retarder with respect to the transmission (4) of the vehicle, the retarder being provided with a cooling cavity. In order to coaxially offset the retarder, a speed increasing gear (16) is incorporated between said electromagnetic retarder and transmission.

Abstract: An electromagnetic retarder (1) for a vehicle includes a disc (20), a first rotor (5) and a second rotor (6), the disc being arranged to couple the first rotor and the second rotor to a transmission shaft of a vehicle. In order to facilitate fitting of this transmission shaft on the electromagnetic retarder, the invention provides for positioning the disc on one of the two rotors in such a way that the disc is placed in a position offset longitudinally, with respect to an axis (21) of the retarder, towards one of the two rotors. The disc includes fastening means for fastening the disc on the corresponding rotor, which fastening means (22) are such that they are positioned between curved arms (9, 10) of the rotor.

Abstract: This invention relates to a reduction gearbox with an epicyclic gear train, especially for a motor vehicle starter. This gearbox is of the type including a crown (30) which comprises a fixed outer crown part (31) and an inner crown part (32) which carries an internal set of teeth (33), together with shock absorbing elements (34). The reduction gearbox is characterised in that the damping elements (34) are made in the form of plates disposed in seatings which consist of recesses (36, 37) of complementary form, formed respectively in the outer peripheral face (38) of the inner crown part (32) and in the inner peripheral face (39) of the outer crown part (31), each recess having a depth which increases in a direction of relative angular displacement between the two crown parts, considered from the peripheral surface, over a length (a) which corresponds to the length of the plate, to a value (b) which is substantially equal to the thickness of the plate. The invention is applicable to motor vehicle starters.