Abstract: An electric vehicle propulsion control device includes a power converter that applies an alternating-current voltage to an induction machine and a controller that controls the power converter based on an external operation command. The controller includes a first calculation unit. The first calculation unit calculates, from current information (id and iq) detected at the induction machine and current command values (id*1 and iq*1) that are based on the operation command, a d-axis voltage command (Vd*1) and a q-axis voltage command (Vq*1) for the power converter, and a primary magnetic flux ?ds and a secondary magnetic flux ?dr of the induction machine. The first calculation unit also adds to or subtracts from a term including the q-axis voltage command (Vq*1) an interference term stemming from the d-axis voltage command (Vd*1) in calculating a first speed ?1 that is a free-run speed of the induction machine.

Abstract: An electric motor controller system for modulating requested motor torque via oscillating the instantaneous torque, including a bi-stable torque controller; a proportional-integral (PI) velocity controller a proportional-integral-differential (PID) position controller; and sinusoidal zero-velocity table mapping.

Abstract: A method, system, and apparatus for controlling and regulating operation of a permanent magnet rotary electric machine including a stator and a rotor includes determining a first reactive power term associated with the electric machine based upon voltage, and determining a second reactive power term associated with the electric machine based upon flux. A first motor temperature associated with the electric machine is determined based upon the first and second reactive power terms, and power output from the permanent magnet electric machine is controlled based upon the first motor temperature.

Abstract: A method for determining an adapted master value of a master axis, wherein a setpoint slave value for a slave axis is derivable from the adapted master value via a synchronism function and a drive on the slave axis is operated in synchronism with the master axis based on the setpoint slave value, where the adapted master value is determined based on a base master value of the master axis and a time difference of operative times of determinable events on the master axis and slave axis.

Abstract: A method for producing a control device for mechanically controlling a component. The control device may have a device housing including a motor accommodating space in which an electric motor is arranged. The electric motor may include a motor housing having a stator and a rotor, the rotor including a rotor shaft. The method may include selecting an electric motor from a plurality of electric motors each suitable for a specified application. Each of the plurality of electric motors may have a different respective axial motor length and may have a same respective motor cross section. Further, the method may include adapting the motor accommodating space to the respective axial motor length of the selected electric motor.

Abstract: In one aspect, a medium voltage power converter includes a plurality of slices each having: a transformer including a plurality of primary windings to couple to a utility source of input power and a plurality of secondary windings; and a plurality of power cubes coupled to the plurality of secondary windings, each of the plurality of power cubes comprising a low frequency front end stage, a DC link, and a high frequency silicon carbide (SiC) inverter stage to couple to a high frequency load or to a high speed machine.

Abstract: A control device for an inverter has a first inverter terminal, a second inverter terminal and a plurality of bridge branches, which bridge branches each comprise a first semiconductor, a winding terminal and a second semiconductor switch. The winding terminals are connected to a winding arrangement. The control device is configured to output a control signal which enables a first bridge branch state and a second bridge branch state in the case of at least two of the bridge branches in a first operating state, wherein, in the first bridge branch state, the second semiconductor switch assigned to the bridge branch is switched on, and wherein, in the second bridge branch state, the second semiconductor switch assigned to the bridge branch is switched off. At least two of the bridge branches are occasionally simultaneously in the first bridge branch state, and a change of said at least two bridge branches into the second bridge branch state is subsequently carried out at different points in time.

Abstract: A method for controlling a braking system of an electromagnetic motor, the electromagnetic motor having a moveable output shaft, comprising the steps of: receiving a velocity signal and/or an acceleration signal based on movement of the output shaft, said velocity signal and/or acceleration signal having a respective frequency spectrum; identifying an event from the velocity and/or the acceleration signal using the respective frequency spectrum, wherein said event corresponds to an uncontrolled movement of the output shaft and has a characteristic frequency spectrum.

Abstract: A control apparatus includes driving means for rotationally driving a predetermined mechanism, braking means for braking the driving means by pressing a pressing unit against a rotation unit of the driving means, and control means for, in order to change rotation position of the predetermined mechanism, controlling the driving means in a braking release period in which the pressing unit is returned to a predetermined position to temporarily maintain the rotation position of the predetermined mechanism, and then driving the predetermined mechanism to thereby change the rotation position. The control apparatus performs at least one of notification to the user, braking of the predetermined mechanism, and stopping of the driving means when a command time for the driving means at the time of temporarily maintaining the rotation position of the predetermined mechanism is longer than or equal to a predetermined time.

Abstract: A power module is provided that is configured to supply power to a load. The power module includes a current generator, a current rail, and a magnetic sensor. The current generator is configured to generate a current. The current rail is configured to receive the current and output the current from the power module. The current rail includes a first opening formed therethrough, and the current, while flowing along the current rail in an output direction, produces a magnetic field. The magnetic sensor is disposed in the first opening of the current rail, and is configured to generate a differential sensor signal based on the magnetic field impinging thereon. The current generator is further configured to regulate the current based on the differential sensor signal.

Abstract: 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.

Abstract: A motor controller having low standby power consumption is provided. The motor controller includes a direct current (DC) bus. The motor controller also includes a low-power supply. The motor controller also includes an inverter configured to control a supply of current to stator windings of a motor. The motor controller also includes a switch circuit coupled between the DC bus and the low-power supply. The motor controller also includes a switch controller coupled to the switch circuit and configured to be coupled to a system controller. The switch controller is configured to control the switch circuit to electrically decouple, in response to detecting an absence of a control signal from the system controller, the DC bus from the low-power supply.

Abstract: Provided is a motor control device which can accurately perform velocity control over a sliding door. The motor control device has a control unit which determines a command value for a duty ratio such that a moving velocity of the sliding door of a vehicle follows a target velocity set in advance while the sliding door is being opened and closed. The motor control device includes a plurality of upper stage switching elements that are connected between terminals of windings of the electric motor and the power source, and a plurality of lower stage switching elements that are connected between the terminals and a ground potential. The control unit causes all the upper stage switching elements or all the lower stage switching elements to be in a turned-on state in accordance with the command value.

Abstract: A motor control method and system are provided. The method includes calculating a measured value of a revolution per minute (RPM) of a motor based on a signal measured by a hall sensor installed in the motor and applying a motor system load model to calculate a predicted value of the RPM of the motor. Further, noise of a hall sensor signal is detected using the measured value of the RPM of the motor and the predicted value of the RPM of the motor.

Abstract: A method for detecting a stall condition of an electric motor. The method can include initiating an open-loop phase. During the open-loop phase, the method can include increasing a rotational speed of an electric motor and obtaining data indicative of a voltage associated with the electric motor while increasing the rotational speed of the electric motor. During the open-loop phase, the method can also include determining a difference between the voltage and a time varying target voltage and detecting a stall condition based at least in part on the difference between the voltage and the time varying target voltage. When a closed-loop condition is satisfied, the method can include initiating a closed-loop phase.

Abstract: Methods and control apparatus for operating a three-phase electric motor are described, in which the motor windings are switched between Star and Delta connections depending on torque requirements, and in which the motor windings are switched to a braking mode when braking torque is required. The electromagnetic torque of the motor is monitored, and a command to switch from Star to Delta is given when the electromagnetic torque rises to reach or exceed a threshold.

Abstract: In a rotary electric machine, a rotor, and a stator. The stator includes slots provided in a circumferential direction thereof, and stator windings wound in the slots. The stator windings include n groups of three-phase windings, where n is a power of 2. The slots include first slots each accommodating portions of same-group and same-phase windings in the n groups of three-phase windings. The energizing directions of the same-group and same-phase windings are identical to each other. The second slots each accommodate different-group and same-phase windings in the n groups of three-phase windings. The first slots and the second slots are arranged in the stator at predetermined intervals in a circumferential direction of the stator, and the three-phase windings of each group are wound around the stator with regular intervals therebetween.

Abstract: A power converter converts a DC voltage including a pulsation component into an AC voltage and outputs the AC voltage to a synchronous electrical motor. A control device for controlling the power converter includes a pulsation component detection unit and a control circuit. The pulsation component detection unit detects a pulsation component. The control circuit controls the power converter so that a load angle of the synchronous electrical motor is increased in accordance with increase in an instantaneous value of the pulsation component.

Abstract: An electric motor driving system controls driving of an electric motor having windings of two or more phases each having open ends by using a pair of inverters. A control unit includes a first inverter control circuit that generates a first voltage instruction output to the first inverter based on a torque instruction and a second inverter control circuit that generates a second voltage instruction output to the second inverter based on the torque instruction. At least one of the inverter control circuits includes an electric power controller that controls allocation of electrical power supplied from a pair of power supplies to the pair of inverters, respectively, by either advancing or delaying an angle of a phase of each of vectors of voltage instructions in accordance with the target electric power instruction during execution of torque feedback control.

Abstract: A motor control system includes a first MCU and a second MCU. The first MCU includes an error detection unit, a resolver digital converter, and a first PWM generation unit. The resolver digital converter includes an encoder unit, which generates encoder pulses based on angle information and outputs the encoder pulses to the second MCU. The error detection unit outputs an error signal to the second MCU, when an error is detected in the first MCU. The first MCU controls the resolver digital converter to operate using a backup clock supplied from the second MCU.