Category: Integrated Power
        
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                    Generalized PWM methods and PW modulator for multi-level three-phase four-wire voltage source converter                  
                                    
                    
        Publication number:No. 200710102959.6
Chinese Patent
May-2012
                              
                  
                  
                    Single-phase power quality conditioner for power supply system in electrified Railway                  
                  
                                    
                    
        Publication number:No. 201210051065.X
Chinese Patent
Feb-2012