摘要 |
An electrical machine is arranged to convert between electrical and mechanical energy, and comprises a rotor 20 and control means 90 arranged to regulate the motion of the rotor to ensure that the power angle of the electrical machine is maintained within a range of a predetermined power angle. A signal generator 2, 6, such as a synchronous machine and associated flywheel, may generate a reference signal relating to the predetermined power angle and be powered by a frequency regulated electrical supply. The control means 90 may be a mechanical control linkage or servo control system and may regulate the output of the motion of the rotor in response to a change in its motion which the control means or a dedicated detection device detects. The electrical machine may be an electric motor, an electricity generator, or a machine switchable between motor and generator modes. The apparatus may generate electricity to supply to a power grid and/or store electricity supplied by a power grid, and the electrical machine may be a synchronous machine where the rotor requires regulation to accommodate grid fluctuations such as low voltage events so as to remain synchronised. The apparatus may comprise an energy storage system that supplies and/or receives power from a power grid. |