Abstract: An apparatus that reduces leakage current and noise in various environments. The apparatus includes a motor, an inverter to supply power to the motor and a plurality of switching elements configured to convert input DC power into three-phase AC power, and a processor to control the plurality of switching elements. The processor generates a carrier, obtains a rising and falling edge timing of a PWM control signal of each phase based on superposition of a zero phase voltage, and drives a motor by shifting the PWM control signal of each phase to allow a rising edge timing and a falling edge timing of a PWM control signal of one phase among the PWM control signal of the each phase to be different from a rising edge timing and a falling edge timing of a PWM control signal of other phase among the PWM control signal of the each phase.

Abstract: An apparatus capable of efficiently reducing leakage current and noise in various environments by shifting a pulse signal of an inverter configured to control a three-phase drive motor, and a control method of the same are provided. In accordance with an aspect of the disclosure, an apparatus is provided. The apparatus includes at least one motor, an inverter configured to supply power to the at least one motor and a plurality of switching elements configured to convert input DC power into three-phase AC power and output the three-phase AC power, and at least one processor configured to control the plurality of switching elements.

Abstract: The present invention continuously operates remaining slave devices except for abnormal slave devices and easily detects the abnormal slave devices, and comprises: a plurality of slave devices; a master device for controlling the plurality of slave devices; a transmission line including a main transmission line connected to the master device, and a plurality of sub-transmission lines branched from the main transmission line and connecting the plurality of slave devices in series, so as to enable data communication between the plurality of slave devices and the master device and to enable mutual data communication between the plurality of slave devices; and a blocking unit interposed between the main transmission line and each of the plurality of sub-transmission lines so as to enable the separation of the sub-transmission lines from the main transmission line.