Faced with the problem that the traditional current detection method has inability to detect fundamental positive and negative sequence currents and longer delay of command current detection process under the Scott transformer power supply,a fundamental positive sequence and negative sequence currents detection method was proposed based on FBD without PLL. Only with simple multiplication,it could obtain the fundamental voltage,and thus generate fundamental positive sequence and negative sequence reference voltages. With the reference voltages and currents,the equivalent conductance could be ac...
