Abstract
This paper proposes a new driving method for switched reluctance motors (SRMs) using the standard full-bridge inverter. In spite of changing the internal structure of an SRM, the proposed method uses an extra ring structure circuit to make it possible for the inverter to drive the SRM. Next to the standard converter, a controllable DC source is needed. With theoretical analysis and calculation, the reference value of the circulating current in the ring structure was determined and the new method was proven via simulation. A comparison was made with the conventional method for driving an SRM: the asymmetric H-bridges. Also, the current studies were then made to confirm that the SRM could be controlled without lowering the performance of the machine. Experimental verification was also made under different conditions, as well as comparison with the simulation results.
Highlights
This type of converter, can reach high voltages with low harmonics without the use of transformers or series-connected synchronized switching devices [2]; it can provide the high power required for a large electric drive [3]
Reference [9] proposed a novel single-stage power factor corrected drive for SRMs, which combines a DC link capacitor used as direct current (DC) source and a diode used for driving the motor into one power stage with conventional asymmetric H-bridges
The ring is closed via an additional DC source
Summary
This type of converter, can reach high voltages with low harmonics without the use of transformers or series-connected synchronized switching devices [2]; it can provide the high power required for a large electric drive [3]. Inverter The is a voltage structure that has no voltage sharing problems for series ofalso connected devices are aaresult, the multilevel full bridge inverter is a structure that has no voltage sharing problems result, the multilevel full bridge inverter is a structure that has no voltage sharing problemsfor for encountered [3] It can obtain improved power quality, lower switching losses, and higher voltage series seriesofofconnected connecteddevices devicesare areencountered encountered[3].
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