Inverter apparatus, drive control apparatus, and drive control method
OwnerShigeki Ikeda, Seiki Sakata +2inventors
InventorsShigeki Ikeda, Seiki Sakata, Satoshi Watanabe, Masanori Tsuzuki
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Abstract
An inverter apparatus includes an inverter for driving a 3-phase motor, a power supply circuit for applying direct current voltage to the inverter, a switching element mounted above and below an arm of each phase, a smoothing capacitor for protecting a voltage applied to the inverter from reaching a value equal to or larger than a predetermined value, and a control circuit for generating a control signal for control of an ON/OFF switching operation of each switching element. The control signal is generated by the control circuit such that the ON timing of each switching element of each phase can be shifted from each other.
Claims7
An inverter apparatus in which a bridge circuit having a plurality of switching elements and a smoothing capacitor are connected in parallel to direct current power, and each of the plurality of switching elements is turned on and off according to a control signal output from a control circuit, thereby converting direct current from the direct current power into multiphase alternating current, wherein
- said control circuit outputs the control signal by shifting from others an ON operation timing of each of a plurality of switching elements in each control cycle.
A drive control apparatus which is used for an inverter, generates alternating current having a predetermined phase difference for each of a plurality of phases, and drives a motor, wherein
- an ON operation timing of a switching element mounted for each phase is shifted.
A drive control method which is used for an inverter, generates alternating current having a predetermined phase difference, and drives a motor, wherein
- an ON operation timing of a switching element mounted for each phase is shifted.
Dependencies are inferred from the claim text.