Method for estimating precise position of electro-magnetic doubly salient motor rotor
A technology for electrically exciting doubly salient poles and motor rotors, which is used in electronic commutation motor control, electrical components, control systems, etc. problems such as starting performance, to achieve the effect of improving commutation accuracy and improving starting performance
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[0033] The invention will be further described in detail below in conjunction with the drawings.
[0034] The system structure block diagram of the present invention is as figure 1 As shown, it mainly includes: electric excitation double salient pole motor, three-phase full bridge converter, excitation control circuit, etc. The section of the electric excitation double salient pole motor is as figure 2 As shown, the three-phase self-inductance curve is as image 3 Shown. The specific implementation steps are as follows:
[0035] 1. Open separately figure 1 The switch tube Q 1 And Q 2 , Q 3 And Q 4 , Q 5 And Q 6 For an equal period of time, the same length of detection pulses A+C-, B+A- and C+B- are sequentially injected into the armature winding through the three-phase full-bridge converter, where the detection pulse A+C- represents the phase A upper tube , C-phase lower tube is turned on, B+A- means B-phase upper tube and A-phase lower tube are turned on, C+B- means C-phase upp...
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