Abstract
In order to improve the ability of harmonic reduction at DC link of multi-pulse rectifier (MPR), the harmonic reduction mechanism at DC link of 24-pulse rectifier with double-tapped inter-phase reactor (IPR) was analyzed. According to the winding configuration of double-tapped IPR and Ampere-Turn balance, the function and operation mode of double-tapped IPR were analyzed. The effect of operation mode on output currents of the two bridge rectifiers, input current of rectifiers, load voltage were also analyzed, and the theoretical value of turn ratio of IPR was calculated. Theoretical analysis and experimental results show that the conduction in turn of the two diodes connected with IPR will produce a circulating current to modulate the output currents of the bridge rectifiers. When the circulating current flows through the input mains, it reduces the (12 k±1)th (k is odd number) harmonics. In addition, conduction in turn of the two diodes produces an additional voltage on the load voltage, which depresses the ripple coefficient of load voltage. Experimental results validate the correctness of theoretical analysis.
| Original language | English |
|---|---|
| Pages (from-to) | 69-77 |
| Number of pages | 9 |
| Journal | Dianji yu Kongzhi Xuebao/Electric Machines and Control |
| Volume | 20 |
| Issue number | 4 |
| DOIs | |
| State | Published - 1 Apr 2016 |
| Externally published | Yes |
Keywords
- Autotransformer
- Double-tapped inter-phase reactor
- Harmonic reduction
- IPR
- MPR
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