Integrated circuit special for controlling switch reluctance motor

Abstract

The invention relates to an application-specific integrated circuit which is controlled by a switch reluctance motor, wherein the structure mainly comprises a three-phase electric current chopped wave module which can change time delay length of chopped wave, a two-step commutating module which can change time delay length, two PWM generating modules which are respectively set for cycle and duty cycle and a counting and generating function module for positioning and angle controlling signals. The application-specific integrated circuit has the advantages that angle control of the switch reluctance motor can be finished through full hardware application-specific integrated circuits, concrete closed-loop control is still realized by a microprocessor, the property requirement of the microprocessor is led to greatly reduce, the application-specific integrated circuit can be applied to wide range of rotating speed, in particular to high speed and super high speed range, and has strong anti-interference property, avoid compiling position to calculate software, and the reliability of the system is increased. The integrated circuit also integrates common controlling modules such as error protection, electric current chopped wave, SPI communicating management and the like, and further reduces the hardware cost and development cost of the controlling device, simplifies complex degree of the switch reluctance motor controlling device, and increases working stability and reliability of the system.

Description

technical field [0001] The invention relates to a switched reluctance motor control special integrated circuit with angle processing function, which belongs to the technical field of integrated circuits. Background technique [0002] Switched Reluctance Machine (hereinafter referred to as SRM) is a new type of speed-adjustable motor that appeared in the 1980s. It is powered by a power circuit pulse and is a typical brushless motor. Due to its own characteristics, switched reluctance motors have the following unique advantages when used in high-speed applications: ①The rotor is a simple and solid solid lamination structure without permanent magnet materials or windings, which can withstand high mechanical strength and centrifugal force, and has excellent high-speed performance. It has good adaptability to harsh operating environments such as high temperature; ②The phase-to-phase coupling of windings is weak, and the operation ability of phase-loss faults is strong. The phase ...

AI Technical Summary

Problems solved by technology

At present, ASIC research abroad in this field has just started, and it is only suitable for the application of fixed switching angle. E

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