Electric car control apparatus

B - Operations – Transporting – 60 – L

Patent

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Details

B60L 9/18 (2006.01) H02M 7/12 (2006.01) H02M 7/48 (2006.01)

Patent

CA 2563273

In an electric car control apparatus for driving an induction motor, detection accuracy of a DC voltage is improved. A DC power supply device is provided which has a maximum potential terminal A, an intermediate potential terminal B, a minimum potential terminal C, an upstream side capacitor 6 between the maximum potential terminal A and the intermediate potential terminal B, and a downstream side capacitor 7 between the intermediate potential terminal B and the minimum potential terminal C. Also, an overvoltage suppression part is provided which includes a resistor 8 and a thyristor 9 between the maximum potential terminal A and the minimum potential terminal C. Further, provision is made for a downstream voltage sensor 10 between the intermediate potential terminal B and the minimum potential terminal C, an upstream voltage sensor 11 between a junction of the resistor 8 and the thyristor 9 and the intermediate potential terminal B, and a three level inverter 3 connected to the maximum potential terminal A, the intermediate potential terminal B and the minimum potential terminal C for supplying AC power to the induction motor. The three level inverter 3 is controlled by using detected voltages of the downstream voltage sensor 10 and the upstream voltage sensor 11.

Il nous est proposé un contrôleur électrique de véhicule pour gérer un moteur à induction dans lequel l'exactitude de détection de la tension du voltage du courant continu est intensifiée. Le contrôleur électrique de véhicule comporte un fournisseur de courant continu ayant un potentiel maximum borne A et un potentiel intermédiaire borne B et un potentiel minimum borne C, un condensateur supérieur (6)placé entre le potentiel maximum borne A et le potentiel intermédiaire borne B et un condensateur inférieur (7) placé entre le potentiel intermédiaire borne B et le potentiel minimum borne C. Un moyen de suppression de sur-tension possédant une résistance (8) et un thyristor (9) placés entre le potentiel maximum borne A et le potentiel minimum C est aussi fourni. De plus, un capteur de basse tension (10), placé entre le potentiel intermédiaire borne B et le potentiel minimum borne C, un capteur de haute tension (11), placé entre le joint de la résistance (8) et le thyristor (9) et le potentiel intermédiaire borne B, et un inverseur à trois niveaux (3), connecté au potentiel maximum borne A, le potentiel intermédiaire borne B et le potentiel minimum borne C et la fourniture de courant alternatif au moteur a induction sont fournis,dans lequel l'inverseur à trois niveaux est contrôlé utilisant la détection des tensions du capteur à basse tension (10) et du capteur à haute tension (11)

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