A solar thermal system comprising at least one solar system including a solar system working fluid flowing therethrough, and a solar receiver for heating the solar system working fluid by solar radiation admitted into the solar receiver, and a thermal energy system in fluid communication with the solar system and receiving the heated solar system working fluid so as to produce thermal energy.

Provided is an electric motor which is simple to design and manufacture, and can be operated by a small current. The electric motor is comprised of a stator (55) having a first stationary permanent magnet (45) and a second stationary permanent magnet (50), a first ring-shaped core (10) having a first switching winding (15) divided into a winding part and a gap part, a second ring-shaped core (12) ...