A gimmick device according to one or more embodiments may include a gimmick and a voice coil motors (VCM). The VCM includes a casing, a permanent magnet, a yoke and iron-core, a bobbin, and a coil part. The gimmick is mounted to the casing on a movable side. The coil part includes a drive and primary coil serving as a drive coil and a primary coil of a displacement sensor including a differential transformer, the drive and primary coil being interlinked with a magnetic flux by the permanent magnet, and two secondary coils of the displacement sensor. The yoke and iron-core may be disposed in a central space defined in the coil part, and serves as an iron core of the displacement sensor.

A permanent-magnet synchronous motor includes an inverter power circuit that converts direct-current power to three-phase alternating-current power, a motor bodydriven by the three-phase alternating-current power, a current detector that calculates an excitation current value and a torque current value from motor stator current values and an estimated value of a magnetic pole position of the rotor, a magnetic pole position detector that determines, for output to the current detector, the estimated value from the excitation current value, the torque current value, and supply voltage information, a voltage calculation unit that calculates, by means of the excitation current value, the torque current value, and an angular velocity calculated from the estimated value, the supply voltage information that causes the torque current value to approximate a torque current command value, and an inverter controller that controls the inverter power circuit on a basis of the supply voltage information and the estimated value.

Systems and methods for robust control of a sensorless interior permanent magnet synchronous motor during severe operating conditions that causes motor parameter variation. A multi-model flux observer and a dynamic direct flux motor controller act in concert to generate driving commands. The flux observer transitions between providing flux-based rotor characteristic estimates based on different motor models. DHFI filtered currents can be utilized to obtain flux-based characteristic estimates using a motor magnetic model that are unaffected by motor parameter variations. The multi-model flux observer can be configured to transition between suitable estimation methods to reduce, minimize, or eliminate the effects of motor parameter variations.

Methods and systems are provided for a winch including a motor and a contactor assembly coupled around the motor. In one example, the contactor assembly is coupled around and in face-sharing contact with a portion of an outer surface of the motor. Additionally, the contactor assembly may include two or more coils spaced apart from one another within the contactor assembly.

Methods and systems are provided for a winch including a motor and a contactor assembly coupled around the motor. In one example, the contactor assembly is coupled around and in face-sharing contact with a portion of an outer surface of the motor. Additionally, the contactor assembly may include two or more coils spaced apart from one another within the contactor assembly.

A reconfigurable rotating electric machine having a rotor to rotate in association with a stator. Coils are arranged to form the windings of one or more phases. Each coil or group of coils has a pair of terminals to receive an electrical input. Switches are arranged to connect each coil or group of coils in series or parallel with another coil or group of coils to form defined coil topology configurations. A processor has memory storing settings to determine a state of each of the switches for each of the defined coil topology configurations. The switches are controllable to connect the coils into a force expansion topology configuration to form an electrical machine having two, four, or more virtual poles.

A reconfigurable rotating electric machine having a rotor to rotate in association with a stator. Coils are arranged to form the windings of one or more phases. Each coil or group of coils has a pair of terminals to receive an electrical input. Switches are arranged to connect each coil or group of coils in series or parallel with another coil or group of coils to form defined coil topology configurations. A processor has memory storing settings to determine a state of each of the switches for each of the defined coil topology configurations. The switches are controllable to connect the coils into a force expansion topology configuration to form an electrical machine having two, four, or more virtual poles.

A filtering of a load in an electrical architecture is provided. The load is equipped with power supply terminals allowing it to be connected to an electrical line of the architecture. The electrical architecture comprises, in addition to the connection to the electrical line and associated with each of the power supply terminals, an insulated electrical conductor connected, at a first of its ends, to the terminal under consideration, and not connected at a second of its ends.

An electric drive system for a vehicle includes a speed/position feedback device coupled to an electric machine and configured to provide an index pulse. The system further includes an inverter having a line voltage sensor. The system includes a controller programmed to, responsive to the electric machine rotating at a generally constant speed without commanding the inverter, generate a resolver offset from a time difference between a zero crossing of a line voltage and the index pulse and operate the inverter according to the resolver offset.

A compressor includes a casing accommodating a compression mechanism, a detection device having a detection face configured to detect an internal state of the casing, an elastic member, and a cover mounted to the casing to cover the detection device and a part of the elastic member. The detection face is located opposite an outer peripheral face of the casing. The elastic member includes a first portion overlapping the detection device and a second portion not overlapping the detection device, as seen in plan view. The cover is configured to press the second portion of the elastic member against the casing, with the first portion of the elastic member pressing the detection device against the casing.