Automatic transmission having three planetary rows and vehicle

An automatic transmission, comprising an input element, an output element, a first planetary row, a second planetary row and a third planetary row, a first clutch, a second clutch and a third clutch, and a first brake, a second brake and a third brake, the first planetary row, the second planetary row, and the third planetary row being orderly arranged along a same rotation axis;

• wherein the first planetary row comprises a first front sun gear, a first rear sun gear, a first gear ring, a first planetary carrier and a first planetary gearset;
• the second planetary row comprises a second sun gear, a second gear ring, a second planetary carrier and a second planetary gearset;
• the third planetary row comprises a third sun gear, a third gear ring, a third planetary carrier and a third planetary gearset;
• the input element is fixedly connected to the second sun gear, the output element is fixedly connected to the third planetary carrier, the first planetary carrier is fixedly connected to the second gear ring, the first gear ring is fixedly connected to the third planetary carrier, and the third sun gear is stationary;
• the first brake is selectively engaged to brake the first rear sun gear, the second brake is selectively engaged to brake the first front sun gear, and the third brake is selectively engaged to simultaneously brake the first planetary carrier and the second gear ring;
• the first rear sun gear is connected to the input element via the first clutch, the second planetary carrier is connected to the third gear ring via the third clutch, and the second clutch is selectively engaged to connect with any two of the second sun gear, the second gear ring and the second planetary carrier, so as to make the second planetary row rotate overall.