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A Current Self-Injection Based Position Sensorless Control for DSEG With Controlled Rectification
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DOI：10.1109/TPEL.2021.3113992.png)
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The controlled rectification method with positon sensor can effectively improve the output power of the doubly salient electromagnetic generator (DSEG), but weakens the advantage of no position sensor for the traditional DSEG with uncontrolled rectification. To solve this problem, a current self-injection based position sensorless control method is proposed for DSEG with H-bridge semi-controlled rectifier (HBSCR) in this article. Based on the operation principle of DSEG and HBSCR, the position estimation method is developed from the positive zero-crossing point of inductive electromotive force (EMF), which is indirectly observed through the test current self-injected by the inductive EMF. According to the relationship between generation current and test current, a test current self-injection method without presetting injection width is put forward, and the corresponding sensorless control strategy is established with the combination of angular position semi-control. Then, the compensation strategy is further presented to improve the accuracy of the proposed position estimation method. Finally, the simulations and experiments are implemented on a three-phase DSEG to validate the feasibility and correctness of the proposed sensorless control strategy.
Keyword:
Rotors
Windings
Rectifiers
Sensorless control
Inductance
Estimation
Generators
Controlled rectification
current self-injection
doubly salient electromagnetic generator (DSEG)
position sensorless control
期刊
IF:
6.5
论文数:
1.7W
被引数:
8.3W
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