Single-phase reluctance generator

Abstract

The invention discloses a single-phase reluctance generator which comprises a stator and a rotor in projecting magnetic pole structures by stacking silicon-steel sheets. Stator magnetic poles are provided with concentrated armature windings which are connected in series or parallel into a group according to the N polarity and the S polarity of the armature windings; rotary magnetic poles arranged on the rotor has the same number as the magnetic pole number of the stator and comprise winding excitation magnetic poles or permanent-magnet magnetic poles and permanent-magnet excitation mixed magnetic poles; magnetic pole windings adjacent to the rotor are connected in series or parallel to form a plurality of N groups and S groups; and the stator poles and the rotor poles consist of 2-stage poles, 4-stage poles, or even n-stage poles, namely even poles or pair poles, respectively comprise different stage poles and have the same total pair poles. The invention adopts a stator isopolar technology so that the rotor can adopt different modes, such as the excitation magnetic poles, the permanent-magnet magnetic poles and the mixed magnetic poles of the permanent-magnet magnetic poles and the electric excitation magnetic poles, and the stator windings can be simultaneously utilized; the dynamic combination of the windings connected in series or parallel facilitates the adjustment of an output voltage, improves the utilization rate of the windings, enhances the power density of the generator and improves the performance and the efficiency of the generator.

Description

technical field [0001] The invention belongs to the technical field of generators, in particular to a single-phase reluctance generator. Background technique [0002] The existing switched reluctance motor (SRM) is a motor with a double salient pole structure. Its stator and rotor are both salient poles and are made of laminated ordinary silicon steel sheets. Concentrated windings are wound on the stator poles, and the rotor is both There are no windings and no permanent magnets; the motor can be divided into single-phase, two-phase, three-phase, four-phase and multi-phase switched reluctance motors according to the number of phases, and the three-phase 6 / 4 pole structure, 12 / 8 pole structure and Four-phase 8 / 6-pole structures are mostly; the advantages of switched reluctance motors are: simple structure, easy to manufacture, high operating efficiency, high power factor, small starting current, large starting torque, strong overload capacity, and wide speed range All have h...

AI Technical Summary

Problems solved by technology

However, the switched reluctance motor (SRM) in the prior art is mechanically driven and in the state of switched reluctance generator (SRG for short), the excitation is unidirectional controllable and time-sharing, while the power generation is unidirectional and time-sharing uncontrollable. , and the current in the power generation state is also unidirectional; more importantly, the original switched reluctance motor SRM is converted to the switched reluctance generator SRG state, and the output is DC power instead of AC power

[0003] Due to the difference in the pole structure of the double salient pole of the switched reluctance motor, that is, the stator and rotor poles are not equal, the number of stator poles is greater than the number of rotor poles, and in the power generation state, the switch tube is also required to control the excitation current of the stator winding and the time for controlling its excitation control angle. , which increases the manufacturing cost and operating cost by 1 / 3-2 / 5, and the excitation method is a phase-separated and stage-by-stage excitation method, which means that the control of the switched reluctance motor is more complicated in the reversible state as a power generation operation. When the motor rotates once, the power tube is electronically controlled for phase-separated excitation and time-sharing for alternate excitation and phase-separated power generation. If the control is good, at most two-phase power generation, because the excitation takes a certain amount of time, it affects the power generation efficiency.

[0004] The patent name I have applied for is "Switched Reluctance Motor Generator", and the invention patent with the patent application number 200810017433.2 is completely different from the invention patent technology I am applying for now. The applied invention technology is electronically controlled when the rotor is not excited. The stator winding is energized to generate a rotating magnetic field and used as a motor. Under the action of the mechanically driven rotating force, the electrical energy output is generated through excitation, and the number of stator and rotor poles is not equal. The number of rotor poles is less than the number of stator poles. It can be composed of different phases and different poles. , the rotor can only be composed of a magnetic pole rotor with windings, and cannot use the stator and rotor equal pole technology, nor can it use the permanent magnet rotor, let alone the claw pole rotor, and the control technology is more complicated. The switched reluctance motor is mechanically driven on the rotor. In the case of a field winding, it becomes a generator

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