| 
							
      					 | 
  					 
  					
    					 | 
   					 
   										
    					| Novel Cascade Multi-level Inverter Topology | 
  					 
  					  										
						| Wang Pengshuai, Han Rucheng | 
					 
															
						| Taiyuan University of Science and Technology, Electronics and Information Engineering, Taiyuan 030024 | 
					 
										
						 | 
					 
				 
				
				
					
						
							
								
									
										
											
                        					 
												
													
													    | 
													    	
														 | 
													 
																										
													
														
															
													
													    | 
													     		                            						                            																	    Abstract  This paper introduces a new cascaded multilevel converter topology and made a in-depth study of its PWM modulation algorithm. This multilevel converter topology has many steps with fewer power electronic switches. The proposed topology consists of series-connected sub- multilevel converters blocks. The structure can reduce the switching device and its power loss, reduce the size of the inverter circuit and improve the efficiency of the inverter and has a relatively simple control system. Finally a simulation study of the PWM modulation for the topological structure had been made ,the simulation results verify the correctness and superiority of the topology.
																										     | 
														 
														
														
															| 
															    															    															    															 | 
														 
														 																											    																														 
															 | 
															
																
															 | 
													    	
															 | 
																
															
														 
														
													 
													
													
												 
												
												
													
																												  
															 [1] BAKER R H, BANNISTER L H, Electric Power Converter. U. S. Patent 03-867-643, Feb. 1975.   [2] NABAE A, TAKAHASHI, AKAGI H. A new neutral- point clamped PWM inverter[j]. IEEE Trans, Ind, Appl., vol. IA-17, 1981, 5: 518-523.   [3] 刘风君.多电平逆变技术及其应用[M].北京:机械工业出版社, 2007: 4-6.   [4] SUROSO, NOGUCHI T. Multilevel current waveform generation using inductor cell and H-Bridge current-source inverter[J]. IEEE Transaction on power electronics, 2012, 27(3): 1069-1098.   [5] 汤天浩,孙今英,韩金刚.一种多电平逆变电路新的组合方式[J].电工技术学报. 2008. 23(2): 49-54.   [6] 王奎,郑泽东,李永东,一种新型的无变压器级联型多电平逆变器拓扑[J].电工技术学报. 2011. 26(8): 1-5.   [7] YOUSEFPOOR N, FATHI S H, FAROKHNIA N. THD minimization applied directly on the Line-to-line voltage of multilevel inverters[J]. IEEE Transations on industrial electronics. 2012, 59(1): 373-380.   [8] BATSCHAUER A L, MUSSA S A, HELDWEIN M L. Three-phase Hybrid Multilevel inverter based on half-bridge modules[J]. IEEE Transations on industrial electronics. 2012, 59(3): 668-678.   [9] HINAGO Y, KOIZUMI H. A switched- capacitor inverter using series/parallel conversion with inductive load[J]. IEEE Transations on industrial electronics. 2012, 59(2): 870-887.   [10] BABAEI E, TARAFDAR HAQUE M, HOSSEINI S H. A novel structure for multilevel converters. in: Proceeding of eighth international conference on elec- trical machines and systems China. 2005, Ⅱ: 1278- 1283.   [11] BABAEI E. A cascade multilevel converter topology with reduced number of switches[J]. IEEE Trans Power Electron 2008: 23(6).   [12] HINAGO Y. A Single-Phase multilevel inverter using switched series/parallel DC voltage sources[J]. IEEE Transactions On IndustrialElectronics. 2010, 57(8): 565-570.   [13] BABAEI E, HOSSEINI S H. New cascaded multilevel inverter topology with minimum number of switches [J]. Energy Conversion and Management 2009(50): 2761-2767.   [14] ZHONG DU, TOLBERT L M. Fundamental frequency switching strategies of a seven-level hybrid cascaded H-bridge multilevel inverter[J]. IEEE Transactions on power electronics, 2009. 24(1): 24-33.  | 
														 
																																									 
												 
												
											
											 
											
											 
										 
									 | 
								 
							 
						 | 
					 
				 
			
		 |