In This Project, A Nine-level Inverter Employing Only One Input Source And Fewer Components Is Proposed For HFAC PDS. It Makes Full Use Of The Conversion Of Series And Parallel Connections Of One Voltage Source And Two Capacitors To Realize Nine Output Levels, Thus Lower THD Can Be Obtained Without HFM Methods. The Voltage Stress On Power Devices Is Relatively Relieved, Which Has Broadened Its Range Of Applications As Well. Moreover, The Proposed Nine-level Inverter Is Equipped With The Inherent Self-voltage Balancing Ability, Thus The Modulation Algorithm Gets Simplified. The Circuit Structure, Modulation Method, Capacitor Calculation, Loss Analysis, And Performance Comparisons Are Presented In This Paper, And All The Superior Performances Of The Proposed Nine-level Inverter Are Verified By Simulation And Experimental Prototypes With Rated Output Power Of 200 W. The Accordance Of Theoretical Analysis, Simulation, And Experimental Results Confirms The Feasibility Of Proposed Nine-level Inverter

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