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Method for controlling the switch of a switch arm
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A switch arm and switch technology, which is applied in the direction of converting irreversible DC power input into AC power output, efficient vehicle charging, and output power conversion devices, etc.
Active Publication Date: 2016-06-01
VALEO SIEMENS EAUTOMOTIVE FRANCES SAS
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However, aside from cost and volume, the filter has the disadvantage that it will generate low frequency leakage currents (on the order of 50Hz / 60Hz) between mains and ground
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no. 1 example
[0042] First Example: Inverter with Three Switching Arms
[0043] equipment
[0044] refer to figure 1 and 2 , can be seen a schematically represented exemplary embodiment of a device 1 for charging eg a hybrid or electric motor vehicle V with a switching device 4 comprising three switching arms A, B, C and an inductor 7 . This device 1 makes it possible to recharge the electric storage device 5 forming the battery B of the vehicle V.
[0045] Each switching arm A, B, C comprises in the example described two switches 12a, 12b distributed over the arms A to C; figure 2 In the upper part of the switch arm and the second switch 12b is in the lower part of the switch arm.
[0046] Arrangements can be made for these switching devices 4 to be incorporated in the inverter 2 of the plant 1 .
[0047] Arrangements can also be made for the inductor 7 to be formed by the windings of the partly shown alternating current three-phase motor 6 . In this case, the switching arms are...
no. 2 example
[0075] Second embodiment: Inverter with six switching arms
[0076] equipment
[0077] now refer to figure 1 and 4 , a second embodiment is described in which the device 1 has six switching arms forming three H-bridges 3, 3', 3", which bridges are for example incorporated into an inverter 2.
[0078] The switching device 4 thus comprises six switching arms A, B, C, D, E, F.
[0079] Each switching arm A, B, C, D, E, F comprises, as before, two switches 12a, 12b distributed over the six arms A to F, the first switch 12a being opposite to the Figure 4 In the upper part of the switch arm and the second switch 12b is in the lower part of the switch arm.
[0080] One advantage of the H-bridge compared to conventional three-phase bridges is that its use doubles the voltage applied to the phases of the motor 6 by the same voltage, so that although it includes a doubled number of switches 12a, 12b, the H-bridge The silicon surface area used for the bridge will be the same as...
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Abstract
The invention relates to a method for charging an electrical storage device configured to be charged by an electrical charging device comprising switching arms (A, B, C) respectively comprising a first switch and a second switch, characterized in that the method comprises the steps of commanding a predetermined number of first switches to close respectively for an associated closing time (tfA, tfB, taC), and commanding another first switch to close for an associated closing time when each of the previously closed first switches is open. The closing times (tfA, tfB, tfC) of the series are connected so that a constant number of first switches are closed at the same time. The invention also relates to a charging device for implementing such a charging method.
Description
technical field [0001] The invention relates to switches controlling switching arms and has particular application in the field of motors or alternators powered by rechargeable batteries. The invention is advantageously applied in the field of electric motor vehicles, in which the battery can power the engine via an inverter and can be recharged when the motor vehicle is stopped. [0002] However, although specifically designed for this type of application, the device and the related method can be used in other fields, notably in wind turbines or hydro-type energy generating plants. Background technique [0003] Traditionally, electric vehicles are equipped with high-voltage batteries that deliver direct current to an inverter that converts the direct current into alternating current that can power an electric motor that thereafter moves the vehicle. [0004] For the recharging of these high-voltage batteries, it is known to equip vehicles with charging equipment incorporat...
Claims
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