A motor drive device includes a first drive system in which a first power supply circuit and a first central processing unit are arranged in order in a first direction, and a second drive system in which a second power supply circuit and a second central processing unit are arranged in order in a second direction. The first direction and the second direction are opposite to each other. Calling a straight line passing between the first power supply circuit and the first central processing unit, perpendicular to the first direction, a first virtual line and calling a straight line passing between the second power supply circuit and the second central processing unit, perpendicular to the second direction, a second virtual line, the first central processing unit and the second central processing unit are disposed within an area sandwiched by the first virtual line and the second virtual line.

An electrical machine includes a with a parallel first and second phase windings. A first neutral bus is connected to the first phase winding and a second neutral bus is connected to the second phase winding. A first voltage sensor is coupled to the first neutral bus and a second voltage sensor coupled to the second phase winding for monitoring current imbalance between the first and second phase windings.

An electrical machine includes a with a parallel first and second phase windings. A first neutral bus is connected to the first phase winding and a second neutral bus is connected to the second phase winding. A first voltage sensor is coupled to the first neutral bus and a second voltage sensor coupled to the second phase winding for monitoring current imbalance between the first and second phase windings.

The present disclosure relates to an interface circuit of a motor driving apparatus, the interface circuit comprising a power circuit unit for controlling driving of a motor, and a control panel unit which controls the power circuit unit and provides a user interface, wherein the power circuit unit further comprises a second MCU which controls a relay and an additional device unit and detects an operation state of the additional device unit, and the second MCU can communicate with a first MCU of the control panel unit via a communication line.

The present invention relates to an electromagnetic machine comprising: rotation shaft; a stator comprising a multi-phase winding wire; a mover (rotor 1) comprising the multi-phase winding wire and spaced apart from the stator at a preset interval; and a controller for independently controlling a first magnetic field of the stator and a second magnetic field of the mover (rotor 1). The electromagnetic machine according to the present invention can resolve, by means of the mover (rotor 1) and the wound-type stator that can be independently and actively controlled, a torque issue at start-up or when needed and, thereby, has the effects of producing a maximum driving torque while having a minimum size, and of maximizing efficiency.

A rotating machine system includes a rotating machine including coils individually conducted in phases, respectively, an operation direction determination unit to determine an operation direction to a driving direction or a braking direction, a drive coil number determination unit to determine a number of coils in each phase based on a drive operation instruction value when the operation direction is the driving direction, a drive coil selector to select the coils of the number of coils determined from the coils in each phase, a drive controller to conduct the coils selected by the drive coil selector to perform drive control, and a brake controller to perform brake control based on a brake operation instruction value when the operation direction is the braking direction.

The drive controller for the electric motor according to the present invention comprises two drive control systems for two winding sets of the electric motor, each drive control system includes a control circuit, an inverter, a power supply connector and a ground connector, the two control circuits are connected to an internal common ground, each rectifying element that passes a current from the common ground to each ground connector is provided in a line that connects the ground connector and the common ground, each current detection element is provided in a line that connects each positive power supply and a line between the rectifying element and the ground connector, and whether an open fault has occurred in the ground connector is diagnosed based on the voltage that is applied to the current detection element.

The drive controller for the electric motor according to the present invention comprises two drive control systems for two winding sets of the electric motor, each drive control system includes a control circuit, an inverter, a power supply connector and a ground connector, the two control circuits are connected to an internal common ground, each rectifying element that passes a current from the common ground to each ground connector is provided in a line that connects the ground connector and the common ground, each current detection element is provided in a line that connects each positive power supply and a line between the rectifying element and the ground connector, and whether an open fault has occurred in the ground connector is diagnosed based on the voltage that is applied to the current detection element.

A stator (1B) has stator coils (U1, V1 and W1) of a first system and stator coils (U2, V2 and W2) of a second system, and the coils are supplied with power from inverter modules (21). A fuse module (22) has two fuse circuit elements (32) corresponding to respective systems. Phase lines of U, V and W of each fuse circuit element (32) are connected together at a neutral point (40), and a fuse (38) is interposed between the neutral point (40) and each coil. By supplying power to a heater (39) accommodated in the fuse circuit element (32) from a control terminal (34), the fuse (38) is blown out.

A motor includes: coil groups of n phases (n is an integer of three or more); a first inverter connected to one ends of the coil groups of n phases; a second inverter connected to the other ends of the coil groups of n phases; a stator around which the coil groups of n phases are wound; and a rotor that can rotate relative to the stator. At least one coil group of the coil groups of n phases includes a first sub coil group including a first coil and a second coil connected in series, and a second sub coil group including a third coil and a fourth coil connected in series. The first sub coil group and the second sub coil group are connected in parallel.