An electric motor comprising a rotor, a stator (150, 150') and a motor controller, the stator (150, 150') comprising: a substantially cylindrical body (152, 152'); a plurality of teeth (154, 154') extending from the substantially cylindrical body (152, 152') in a radial direction; one or more first sets of electrical windings (170, 170') that are wound around said teeth (154, 154') and configured to drive the rotor; and one or more second sets of electrical windings (180, 180') electrically separate from the first set of electrical windings (170, 170'), wherein the second set of electrical windings (180, 180') on the stator (150, 150') are electrically connected to the motor controller such that energy produced by the electric motor during a regenerative mode of operation in use is diverted to the second set of electrical windings (180, 180') on the stator (150, 150') for dissipating the energy produced in the regenerative mode, wherein the second set of windings (180, 180') are electrically connected to a DC intermediate circuit of the motor controller, wherein the DC intermediate circuit includes an inverter or other type of electronic switch configured to control the electric motor current through the second set of windings (180, 180'), wherein during the regenerative mode of operation energy produced by the electric motor causes the voltage across the DC intermediate circuit to increase, and once the voltage across the DC intermediate circuit exceeds a predetermined value, the inverter or other type of electronic switch is enabled to dissipate the energy produced by the electric motor to the second set of electrical windings (180, 180') as aforesaid. a substantially cylindrical body (152, 152'); a plurality of teeth (154, 154') extending from the substantially cylindrical body (152, 152') in a radial direction; one or more first sets of electrical windings (170, 170') that are wound around said teeth (154, 154') and configured to drive the rotor; and one or more second sets of electrical windings (180, 180') electrically separate from the first set of electrical windings (170, 170'), wherein the second set of electrical windings (180, 180') on the stator (150, 150') are electrically connected to the motor controller such that energy produced by the electric motor during a regenerative mode of operation in use is diverted to the second set of electrical windings (180, 180') on the stator (150, 150') for dissipating the energy produced in the regenerative mode, wherein the second set of windings (180, 180') are electrically connected to a DC intermediate circuit of the motor controller, wherein the DC intermediate circuit includes an inverter or other type of electronic switch configured to control the electric motor current through the second set of windings (180, 180'), wherein during the regenerative mode of operation energy produced by the electric motor causes the voltage across the DC intermediate circuit to increase, and once the voltage across the DC intermediate circuit exceeds a predetermined value, the inverter or other type of electronic switch is enabled to dissipate the energy produced by the electric motor to the second set of electrical windings (180, 180') as aforesaid.