Electrical system for electric vehicle

An electric system for an electric vehicle, comprising. a DC input circuit (100; 102), a voltage inverter (101), an input voltage is applied to the direct current from the input circuit and which generates a variable AC voltage of variable frequency is connected to the DC input circuit, and an AC motor (103) having a plurality of windings (104), whose respective one end is connected to an AC output terminal of the inverter (101), while the other ends of the windings (104) to a zero point (103a) are connected together of the motor windings, marked by an energy storage element (105) of variable voltage connected between the zero point (103a) and a connection point is switched to the DC input circuit, and a DC power supply (106) to either the energy storage element (105) or to the DC input circuit (100; 102) is connected in parallel, wherein the inverter (101) in a material represented by a zero voltage vector as a switching state is operable DC chopper such that energy between the energy storage element (105) and the DC input circuit (100; 102) is transmitted.