To　balance　the　phase　output　currents　of　a　multiphase　inverter　in　a　wireless　power　transfer　(WPT)　system,　negatively　coupled　inductors　can　be　utilized　to　achieve　a　larger　differential　mode　(DM)　loop　impedance　than　the　common　mode　loop　impedance.　For　a　good　current　balancing　effect,　the　inductances　of　the　negatively　coupled　inductors　should　be　large,　leading　to　extra　losses,　cost　ineffectiveness,　and　bulky　size,　which　should　be　avoided　in　high-power　applications.　To　solve　these　issues,　this　paper　proposes　a　novel　current　balancing　method　based　on　parallel　resonance.　For　a　series-series　compensated　WPT　system,　part　of　the　compensating　capacitance　is　employed　to　form　a　parallel　resonant　network　together　with　an　extra　inductor.　The　DM　currents　are　suppressed　by　the　large　impedance　of　the　parallel　resonant　network.　Compared　with　the　existing　method,　the　inductances　of　the　negatively　coupled　inductors　can　be　greatly　reduced　to　achieve　far　better　current　balancing　performance,　at　the　cost　of　adding　an　inductor　with　a　small　current　rating,　which　is　only　visible　for　the　DM　currents.　A　prototype　is　implemented　to　validate　the　proposed　method.　©　2021　IEEE.