The invention discloses a permanent
magnet hall thruster ignition device comprises an outer
ceramic ring, an inner
ceramic ring, an
anode assembly, magnetic steel, a magnetic conductive base, a magnetic steel sleeve, excitation coils and a magnetic conductive
ferrule; the magnetic conductive
ferrule is installed on the outer wall of the magnetic steel in a sleeved manner; the magnetic conductive
ferrule and the magnetic steel are installed in an annular positioning ring on the magnetic conductive base; and the excitation coils are installed between the inner wall of a magnetic steel sleeve andthe outer wall of the magnetic conductive ferrule through positioning of the annular positioning ring. In the ignition process, the excitation coils, a power supply of which is supplied by a cathodeheating power supply, generate a
magnetic field with a direction opposite to a direction of an inherent
magnetic field of the magnetic steel, and the intensity of the
magnetic field at an outlet of adischarge channel is weakened, so that primary electrons emitted by a
cathode can successfully enter the
discharge channel, and arcing ignition of the thruster is facilitated; and after ignition of the thruster is finished, power supply of the excitation coils is
cut off. By adopting the permanent
magnet hall thruster ignition device, the ignition difficulty of a permanent
magnet hall thruster canbe remarkably lowered, and extra burden caused to components such as a power supply
processing unit, a
propellant storage unit and a
control unit cannot be generated at the same time.