PROBLEM TO BE SOLVED: To provide a power supply system of an agricultural machine that can store power wirelessly supplied from a tractor to a work machine attached to the tractor for performing agricultural work in a power storage unit, and reduce the consumption of the power stored in the power storage unit.SOLUTION: A power supply system of an agricultural machine includes a power transmission unit 14 installed on a tractor 1 side, and connected to a power source 11 included in the tractor 1 through a switch 13, a power receiving unit 21 installed in a work machine 2, a work machine side radio unit 22 installed in the work machine 2 and connected to the power receiving unit 21, a power storage unit 23 installed in the work machine 2 and connected to the power receiving unit 21, a control unit 24 installed in the work machine, a radio current control unit installed in the work machine 2, and an actuator 27 installed in the work machine 2. The power stored in the power storage unit 23 is supplied when the actuator 27 is operated, and the current control unit 42 executes control so that the power stored in the power storage unit 23 is not consumed in the work machine side radio unit 22 when it is determined that the power is not wirelessly supplied to the power receiving unit 21.SELECTED DRAWING: Figure 1【課題】トラクタからトラクタに装着して農作業を行う作業機へワイヤレス給電した電力を蓄電部に貯めて、この蓄電部に貯めた電力の消費を低減させることができる農作業機の給電システムを提供することを目的とする。【解決手段】トラクタ１側に設置されトラクタ１に有する電源１１とスイッチ１３を介して接続される送電部１４と、作業機２に設置される受電部２１と、作業機２に設置され受電部２１と接続される作業機側無線部２２と、作業機２に設置され受電部２１と接続される蓄電部２３と、作業機に設置される制御部２４と、作業機２に設置される無線電流制御部と、作業機２に設置されるアクチュエータ２７とを有し、蓄電部２３に蓄えられた電力はアクチュエータ２７の作動時に供給され、電流制御部４２は受電部２１へワイヤレス給電されていないと判断したときは蓄電部２３に蓄えられた電力が作業機側無線部２２で消費されないように制御する。【選択図】図１
