A method for controlling a rectifier, characterized in that the method comprises: obtaining frequency information and switching information of a power generator (11, 21), the switching information comprising: a switching point that is a time point at which a voltage or a current of the power generator (11, 21) crosses zero; and a switching interval that is within a range of a first specific percentage of a half of a period of the frequency information, wherein the switching point is at a center of the switching interval; obtaining a predicted switching interval according to the frequency information and the switching information, and obtaining a feedback signal according to a first terminal, connected to an anode of an anti-parallel diode, and a second terminal, connected to a cathode of the anti-parallel diode, of at least one switching component (M1, M2, M3, M4, M5, M6) of the rectifier; and switching a switching signal of the rectifier within the predicted switching interval according to the feedback signal, wherein the switching signal is switched to cause the switching component (M1, M2, M3, M4, M5, M6) to be in an on state or in a conducting state if a voltage of the first terminal is greater than a voltage of the second terminal within the predicted switching interval, and the switching signal is switched to cause the switching component (M1, M2, M3, M4, M5, M6) to be in an off state or in a non-conducting state if the voltage of the first terminal is less than the voltage of the second terminal within the predicted switching interval. obtaining frequency information and switching information of a power generator (11, 21), the switching information comprising: a switching point that is a time point at which a voltage or a current of the power generator (11, 21) crosses zero; and a switching interval that is within a range of a first specific percentage of a half of a period of the frequency information, wherein the switching point is at a center of the switching interval; a switching point that is a time point at which a voltage or a current of the power generator (11, 21) crosses zero; and a switching interval that is within a range of a first specific percentage of a half of a period of the frequency information, wherein the switching point is at a center of the switching interval; obtaining a predicted switching interval according to the frequency information and the switching information, and obtaining a feedback signal according to a first terminal, connected to an anode of an anti-parallel diode, and a second terminal, connected to a cathode of the anti-parallel diode, of at least one switching component (M1, M2, M3, M4, M5, M6) of the rectifier; and switching a switching signal of the rectifier within the predicted switching interval according to the feedback signal, wherein the switching signal is switched to cause the switching component (M1, M2, M3, M4, M5, M6) to be in an on state or in a conducting state if a voltage of the first terminal is greater than a voltage of the second terminal within the predicted switching interval, and the switching signal is switched to cause the switching component (M1, M2, M3, M4, M5, M6) to be in an off state or in a non-conducting state if the voltage of the first terminal is less than the voltage of the second terminal within the predicted switching interval.