Electromechanical hybrid non-arc commutation multi-phase inverter

Abstract

The invention discloses an electromechanical hybrid non-arc commutation multi-phase inverter. The electromechanical hybrid non-arc commutation multi-phase inverter comprises commutation electric brushes, a commutator, an output slip ring and an output electric brush, wherein the commutation electric brush comprises one or more commutation slice groups; the commutation electric brushes are adjacent at a 360-degree/m mechanical angle, and all the commutation electric brushes share one commutator; each commutation slice group consists of a power supply positive electrode commutation slice, a follow current commutation slice I, a power supply negative electrode commutation slice and a follow current commutation slice II; the power supply positive electrode commutation slice, the follow current commutation slice I, the power supply negative electrode commutation slice and the follow current commutation slice II are insulated mutually through mica sheets, and are arranged into a complete 360-degree electrical degree period based on circumference, and the occupied mechanical angle is 360-degree/P; the electrical angle and the mechanical angle of each power supply positive electrode commutation slice and the power supply negative electrode commutation slice are 120 degrees and 120-degree/P respectively; and the electrical angle and the mechanical angle between each of the follow current commutation slice I and the follow current commutation slice II and each of the insulating mica sheets in front and back are 60 degrees and 60-degree/P respectively.

Description

technical field [0001] The invention relates to the technical field of mechanical and electronic hybrid inverters, in particular to an electromechanical hybrid multi-phase inverter with arcless commutation. Background technique [0002] At present, commonly used inverters are realized by composing an inverter topology through power electronic switching devices, and then controlling the on and off of the switching devices. The devices in the inverter topology include the turn-on and turn-off controllable main pipe and the freewheeling diode connected in antiparallel with the main pipe. The controllable power electronic devices are expensive and limited in capacity, and at the same time, the system cost is further increased due to the need for complex control , reducing system reliability. The mechanical commutation device of a traditional DC motor is essentially an inverter, but it almost inevitably has sparks and may generate arcs. At the same time, it also has disadvantage...

AI Technical Summary

Problems solved by technology

The devices in the inverter topology include the turn-on and turn-off controllable main pipe and the freewheeling diode connected in antiparallel with the main pipe. The controllable power electronic devices are expensive and limited in capacity, and at the same time, the system cost is further increased due to the need for complex control , which reduces the system reliability

The mechanical commutation device of a traditional DC motor is essentially an inverter, but it almost inevitably has sparks and may generate arcs. At the same time, it also has disadvantages such as complex structure and high cost of the commutator.

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