To　balance　the　phase　output　currents　of　a　multiphase　inverter,　negatively　coupled　inductors　(NCIs)　can　be　used　to　achieve　a　larger　differential　mode　(DM)　loop　impedance　than　the　common　mode　(CM)　loop　impedance.　For　a　good　current　sharing　effect,　the　inductances　of　the　NCIs　should　be　large,　leading　to　bulky　size　and　cost　ineffectiveness,　which　should　be　avoided　in　high-power　applications.　This　article　proposes　a　novel　current　balancing　method　based　on　parallel　resonance.　A　parallel　resonant　network　(PRN)　is　inserted　between　any　two　phases.　With　Delta　-Y　transform,　the　inductor　common　point　and　the　capacitor　common　point　are　generated,　either　of　which　can　be　used　as　the　CM　output　node.　For　a　series-series　compensated　wireless　power　transfer　system,　part　of　the　existing　compensating　capacitance　can　be　employed　to　form　PRNs　with　the　added　parallel　inductors.　The　DM　currents　are　suppressed　by　the　large　impedance　of　the　PRNs.　Compared　with　the　existing　method,　the　inductances　of　the　NCIs　can　be　greatly　reduced　to　achieve　better　current　balancing　performance.　The　added　parallel　inductors　are　of　small　current　ratings,　which　are　only　visible　to　DM　currents.　A　prototype　is　implemented　to　validate　the　proposed　method.　©　1982-2012　IEEE.