Abstract: A sensor and/or system controller may process an image multiple times at multiple resolutions to detect glare conditions. A glare condition threshold used to determine whether a glare condition exists may be based on the resolution of the image. When the resolution of the image is higher, the glare condition threshold may be higher. The sensor and/or system controller may organize one or more adjacent pixels having similar intensities into pixel groups. The pixel groups may vary in size and/or shape. The sensor and/or system controller may determine a representative group luminance for the pixel group (e.g., an average luminance of the pixels in the group). The sensor and/or system controller may determine a group glare condition threshold, which may be used to determine whether a glare condition exists for the group of pixels and/or may be based on the size of the group.

Abstract: The invention relates to a rotary machine comprising a stator and a rotatably mounted rotor, with one or more magnetic field sensors arranged stationary relative to the stator at a radial distance from a stationary axis, at least one measuring device which configured to detect magnetic field changes with the aid of the aforementioned magnetic field sensors, a rotor which is configured to generate one or more electrical signals in each case, said signals having signal components which correspond to the rotor rotation frequency and to the distance between magnetic field sensor and rotor in each case, wherein a demodulator unit carries out a demodulation of signals generated by or derived from the magnetic field sensors, such that a signal is generated which corresponds to the distance between the rotor and the magnetic field sensor.

Abstract: A method for operating a power converter as an inverter between a DC voltage and an AC voltage grid is disclosed. For each AC voltage phase of the AC voltage grid, the power converter has at least one half-bridge which is connected to the AC voltage phase and has two semiconductor switches. Each semiconductor switch is reversed-connected in parallel with a diode. An activation angle range is determined for each semiconductor switch within an angle period, the lower range limit of which activation angle range is formed by subtracting a pre-firing angle from the lower range limit of a switch angle range, and the upper range limit of which activation angle range is formed by subtracting a pre-extinction angle from the upper range limit of the switch angle range.

Abstract: Inspection robots with independent, swappable, drive modules are described. An example inspection robot may have a center body with a plurality of power interfaces, a plurality of communication interfaces, and a plurality of cooling interfaces. The example inspection robot may have a plurality of drive modules, where each drive module is structured to be coupled to a power interface, a communication interface, and a cooling interface.

Abstract: When regeneration operation is being performed, electric power on a main-machine side is supplied to an auxiliary-machine side, a voltage on the auxiliary-machine side is controlled to become a first voltage value predetermined on the basis of operating voltage specifications of an auxiliary apparatus, a generator on the auxiliary-machine side is deactivated to stop supply of electric power to the auxiliary-machine side, and electric power on the auxiliary-machine side is supplied to a power storage apparatus.

Abstract: A rotating electrical machine control system includes a base current instruction setting part that sets a base current instruction based on target torque of a rotating electrical machine; a correction current instruction setting part that sets a correction current instruction with a frequency determined based on torque ripple; and a current control part that performs current feedback control to compute a voltage instruction which is an instruction value of a voltage to be applied to the rotating electrical machine. The current control part includes a first current control part whose control target is a component of the base current instruction; and a second current control part whose control target is a component of the correction current instruction. A gain of the second current control part is set to be low compared to a gain of the first current control part.

Abstract: A control device for a ceiling fan may have a motor drive circuit configured to control a rotational speed of a motor of the ceiling fan, an occupancy sensing circuit, and a control circuit configured to adjust the rotational speed of the motor in response to a detected occupancy or vacancy condition. The control circuit may process the signals generated by the occupancy sensing circuit to eliminate the effects of vibrations and/or wobbling of the ceiling fan. The control circuit may control the motor drive circuit to adjust the rotational speed of the motor in response to an accelerometer to minimize the magnitude of the wobble of the ceiling fan. The control circuit may be configured to learn a preferred rotational speed for the motor. The control circuit may also be configured to control the rotational speed of the motor to affect a thermal comfort level of an occupant.

Abstract: A device for restoring energy parameters of a battery is provided. The device includes a supporting frame, a controller, and a battery container configured to receive the battery therein, the battery container being operably coupled to a controlling inverter and a motor comprising a motor reductor. The controlling inverter is configured to regulate a rotational speed of the motor. The motor reductor is configured to facilitate rotation of the battery container. Methods of restoring energy parameters of a battery are also provided.

Abstract: A switching method for six-step motor drive with an output inverter that provides commutation switching of power to the phase windings of a driven motor includes regulating the current to the output inverter and to the motor by a variable bus. switching six transistors of a three phase H-bridge and six associated freewheeling diodes of the output inverter by a pair of two transistors to commutate power to the phase windings conducting during conduction steps, and at each commutation step one off-going transistor is switched off and one on-going transistor is switched on the switching method further comprising monitoring of the back emf on two legs of the phase windings of the motor for determining commutation timing, and commutating the output inverter through non-simultaneous switching of the off-going transistor with switching of the on-going transistor.

Abstract: A drive system includes an electric machine with a rotor having an externally excited rotor winding, and a stator having stator winding sets, each with at least three stator windings; a control unit controlling the electric machine supply the rotor winding with a first current signal, and the stator windings with different current phases of a multi-phase second current signal, thus producing a rotary magnetic field generating a torque on the rotor; at least one inverter, the multi-phase current signal being provided based on the at least one inverter; and at least one rectifier providing a DC signal, the first current signal being based at least on the DC signal and on an AC harmonics component. Harmonics of a current phase of the multi-phase current signal are reduced based on the supply of the AC harmonics component.

Abstract: An energy conversion device is provided, including: a first electrical motor control circuit, where the first electrical motor control circuit is connected with a battery pack; a second electrical motor control circuit, where the second electrical motor control circuit is connected with the first electrical motor control circuit in parallel; and a controller, configured to: when operating in a first control mode, control the first electrical motor control circuit to charge and discharge the battery pack to heat the battery pack, and control the second electrical motor control circuit to output torque.

Abstract: To provide a controller for AC rotary electric machine which can suppress the increase in the unwanted sound while reducing noise. A controller for AC rotary electric machine switches n pieces of zero phase candidate voltage values in order for every switching period and calculate as a zero phase voltage value; by defining a deviation between the zero phase voltage value and a time lag zero phase voltage value delaying by a j times value of the switching period, as a zero phase time lag deviation value; j is a natural number which minimizes a difference between a half period of a mechanical resonance period, and the j times value of switching period; an effective value of the zero phase time lag deviation value becomes small, compared with an effective value of AC component of the zero phase voltage value.

Abstract: A propulsion system (100) comprises: a generator (30) driven by a shaft (22) of a thermal engine (20) and configured to generate electrical power; an induction motor (60) that is electrically coupled to the output of the generator (30) and is configured to generate a rotational output in response to electrical power provided by the generator (30); a generator control unit (40) that is configured to control an output voltage of the generator (30) to limit a current supplied to the induction motor (60) during start-up of the propulsion system (100); and a switch (50) that is electrically coupled between the generator (30) and the induction motor (60), wherein the switch (50) is controllable by the generator control unit (40).

Abstract: A motor driver drives a motor that controls a position of an object based on a command from a controller. The motor driver includes: a correction command output part that outputs a correction command for correcting a position of the motor based on a position of the object detected by a displacement sensor that detects the position of the object; and a position controller that outputs a drive signal for driving the motor based on the command from the controller and the position of the motor detected by an encoder that detects the position of the motor, or based on the correction command and the position of the motor detected by the encoder.

Abstract: Induced currents in a multi-phase AC motor may be attenuated by operating the multi-phase AC motor with an AC choke surrounding an AC bus providing multi-phase AC voltage to multi-phase AC stator windings in a stator, wherein the AC choke may include an effective bandwidth at least covering resonant frequencies of a capacitance between the multi-phase AC stator windings and the stator or a frame of the AC motor.

Abstract: Provided is a method for determining the generation source of ripple voltage when abnormal ripple voltage is detected. The control device is for an electric compressor, the control device comprising: a detection unit that detects ripple voltage; a judgment unit that judges whether the ripple voltage is abnormal based on the value of the ripple voltage; and a cause determination unit that determines whether the cause of the abnormality is the electric compressor or some other external device, based on the control result of the electric compressor.

Abstract: An apparatus and method for rotating a part includes a sequence of relays to rotate the part given number of degrees. The apparatus does not require software or complex mechanical gearing.

Abstract: A control circuit for an electrostatic machine includes a current source or sink, an inductor, a switching network coupled between the current source or sink and the electrostatic machine, and between the inductor and the electrostatic machine. A controller is configured to automatically cause the switching network to connect the current source or sink to the electrostatic machine each half-cycle of a periodically alternating polarity. At each polarity alternation, the electrostatic machine is isolated from the current source or sink for a first period of time. At each polarity alternation, the inductor is connected to the electrostatic machine for a second period of time while the electrostatic machine is isolated from the current source or sink, and then disconnect the inductor from the electrostatic machine.

Abstract: An apparatus includes a plurality of DC buses and a plurality of inverter circuits, respective ones of which are coupled to respective ones of the plurality of DC buses. The apparatus further includes a control circuit configured to generate a representative DC voltage signal based on DC voltage signals for respective ones of the DC buses, to generate a first modulation control signal from the representative DC voltage signal, to generate second modulation control signals for the respective inverter circuits from the representative DC voltage signal and the first modulation control signal that are normalized based on the DC voltage signals for the buses and the representative DC voltage signal, and to modulate the inverter circuits responsive to respective ones of the second modulation control signals. The representative DC voltage signal may represent a maximum of the DC voltages for the respective DC buses.

Abstract: A system for controlling an electric motor includes a voltage regulation device connected to the electric motor, the electric motor connected to an inverter by a power cable including at least one electrical conductor. The voltage regulation device includes a diode bridge circuit configured to mitigate overvoltage transients at the electric motor. The diode bridge circuit includes an alternating current (AC) input and a direct current (DC) output, the AC input connected to a terminal of the electric motor.