Abstract: A charging control method for an electric vehicle is configured to boost a charging voltage by using a motor and an inverter, and includes steps of determining whether a current imbalance control is normally operated based on currents input from the motor to three-phase inputs of the inverter during charging, determining whether a current sensor is deteriorated based on a result of an internal temperature sensing of the inverter when the current imbalance control is in a normal operation, and adjusting a scale of the current sensor to maintain the charging, when a deterioration of the current sensor is detected, as a result of the determination.

Abstract: To provide a high-voltage apparatus control device capable of judging the connection state of a connector and discharging residual charge in a short time. A control device 1 controls an electric compressor and is provided with an interlock loop 4 annexed to a connector 9 for connecting the electric compressor to an HV battery 17. The control device 1 detects connection/disconnection of the connector 9 on the basis of the state of the interlock loop 4 and forcibly discharges residual charge in an internal smoothing capacitor 14 when disconnection of the connector 9 is detected.

Abstract: 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.

Abstract: Controllers for controlling hybrid motor drive circuits configured to drive a motor are provided herein. A controller is configured to drive the motor using an inverter when a motor commanded frequency is not within a predetermined range of line input power frequencies, and couple line input power to an output of the inverter using a first switch device when the motor commanded frequency is within the predetermined range of line input power frequencies.

Abstract: A motor controller comprises a switch circuit and a control unit. The switch circuit is coupled to a motor for driving the motor. The control unit is configured to generate a control signal to control the switch circuit. The motor controller is configured to generate a current signal and a voltage signal. When a current phase of the current signal is at a predetermined crossing phase, the motor controller calculates a difference value between the current phase of the current signal and a voltage phase of the voltage signal, where the motor controller is configured to control the difference value. The motor controller may stabilize the motor and avoid noise by modulating the difference value. The motor controller may modulate the difference value, such that the difference value is equal to a predetermined phase difference.

Abstract: An air conditioner includes a compressor to compress a refrigerant used in a refrigeration cycle, a converter to generate a DC voltage, an inverter to generate three-phase AC voltages from the DC voltage, a motor to produce a driving force for driving the compressor with a plurality of coils, the three-phase AC voltages being applied to the coils, a connection switching unit to switch connection states of the coils between a first connection state and a second connection state, and a controller to detect an abnormality of the connection switching unit.

Abstract: Device for determining the angular position of a rotor of a rotary electric machine on the basis of signals delivered by a plurality of position sensors, including a circuit producing a control loop for estimating position of the rotor, delivering at output a signal representative of the position, and a circuit for dynamic normalization by the amplitude of the first harmonic of each signal originating from a position sensor. The circuit receives as input each signal originating from a position sensor, and at least one image of the signal representative of the position of the rotor and is configured to demodulate each signal by the image of the signal, determine, at the end of this demodulation, amplitude of the first harmonic of this signal originating from a position sensor, and normalize each signal by dividing it by the amplitude of the first harmonic of the previously determined signal.

Abstract: In one aspect of the present disclosure, a movable barrier operator system is provided that includes a motor configured to turn a drum to pay out a cable from the drum and permit a door connected to the cable to move from an open position toward a closed position. The system includes a memory configured to store an expected variable of the door, and a sensor configured to detect movement of the door. The system further includes a processor circuit operatively coupled to the motor, the memory, and the sensor. The processor circuit is configured to: use the sensor to estimate an actual variable of the door; determine whether the actual variable is acceptable based at least in part on the expected variable and the processor circuit causing the motor to turn the drum; and change operation of the movable barrier upon the actual variable of the movable barrier being unacceptable.

Abstract: An electric tool includes a motor and a motor control device. The motor control device is configured to update a command value of a speed of the motor based on a parameter relating to at least one of a voltage of a direct-current power supply for the motor or a magnitude of a load applied to the motor during rotation of the motor.

Abstract: To provide a controller for AC rotary electric machine which can compensate error of the actual on-duty with respect to the command on-duty calculated from command voltage with good accuracy, with a simple circuit configuration. A controller for AC rotary electric machine detects an actual on-duty of the switching device based on the detection value of the midpoint potential which is the potential of the connection node of the series connection in the series circuit; calculates an on-duty error based on the difference between the command on-duty and the actual on-duty; and corrects the voltage command or the command on-duty based on the on-duty error.

Abstract: A brushless DC electric (BLDC) motor driver circuit includes: a power stage circuit configured to operably drive a brushless DC electric (BLDC) motor according to a pulse width modulation (PWM) signal; and an abnormality diagnosis circuit, wherein when a first parameter is under control, the abnormality diagnosis circuit is configured to operably determine a rotation abnormality condition of the BLDC motor according to a second parameter; wherein the first parameter and the second parameter are correlated with the rotation of the BLDC motor.

Abstract: There is described a method of controlling an inverter supplying power to a permanent magnet AC, PMAC, motor having a plurality of phase windings, The method comprises: selecting a first phase winding of the PMAC motor; electrically connecting the first phase winding to a first DC terminal of a DC link circuit at a first time, and maintaining the connection between the first phase winding and the first DC terminal: determining a flux difference between the first phase winding and a second phase winding of the PMAC motor; selecting a second time to electrically connect the second phase winding to the first DC terminal; electrically connecting the second phase winding to the first DC terminal at the second time; and maintaining the connection between the second phase winding and the first DC terminal. The second time is selected based on the determined flux difference.

Abstract: A method for monitoring a motor unit is provided. The method includes: detecting a starting rotor position: ascertaining a non-safety-critical position tolerance range; ascertaining a position offset for the rotor as a function of the ascertained position tolerance range; ascertaining a target rotor position for the rotor based on the starting rotor position and the position offset; specifying a target control pattern based on the ascertained target rotor position; generating and applying a motor control pattern to the motor unit to rotate the rotor to the specified target rotor position using the target control pattern; detecting an actual control pattern controlling the motor unit at an interface between the motor controller and the motor unit; detecting an actual rotor position resulting from the rotation of the rotor using the motor control pattern; and feeding back both the detected actual control pattern and the detected actual rotor position for verification thereof.

Abstract: A stator of a rotating electrical machine has a slot-less structure. The rotating electrical machine includes a controller. The controller determines a value of a q-axis command current in accordance with requirement information and an input command value for a controlled variable of the rotating electrical machine. The requirement information includes a relationship between values of the q-axis command current and corresponding command values for the controlled variable. The controller performs a task of correcting the value of the q-axis command current to thereby restrict temperature change in a magnet unit from having an influence on the relationship between the command values for the controlled variable and the corresponding values of the q-axis command current. The controller controls an inverter to thereby adjust a value of the q-axis current flowing through an armature winding member to the corrected value of the q-axis command current.

Abstract: A winch control system having a solid state winch contactor and a boost power supply for a vehicle equipped with an electric winch and especially for off-road vehicles, is disclosed. This invention automatically provides three winch speeds: a “slow start” (“creep”) speed for “parking” the hook and for “sneaking” up on a load, a normal speed for normal winch operation and a fast speed for taking less time to unwind and rewind the winch rope when there is no load on the winch. Protection features for the winch contactor and/or the winch include, but are not limited to, electronic winch motor braking, current limiting, over temperature, undervoltage and reverse battery. Winch current limiting is adjustable from 100 amps to 300 amps, chosen for the purpose of accommodating various winch sizes.

Abstract: A control device for an electric motor includes a control circuit that controls an operation of an inverter circuit on the basis of a voltage command value corresponding to a difference between a current command value calculated on the basis of the position of a rotor of the electric motor, and a current flowing through the electric motor. A current estimation unit estimates the current flowing through the electric motor by substituting the voltage command value, a parameter unique to the electric motor, and a rotational speed calculated on the basis of the position of the rotor into a voltage equation serving as a model of the electric motor. An LR estimation unit estimates an inductance and a resistance of the electric motor serving as parameters on the basis of the difference between the current obtained by a current acquisition unit and the current estimated by the current estimation unit.

Abstract: A system for an inverter includes a first integrated circuit configured to: provide power to a first set of switches, and selectively control the first set of switches and a second set of switches; a second integrated circuit configured to provide power to the second set of switches; and an electric motor being connected to the first set of switches and the second set of switches, wherein, the second integrated circuit is further configured to: in response to an a fault detected in the first integrated circuit, selectively control the first set of switches and the second set of switches, and, in response to at least one voltage value corresponding to a voltage of the first set of switches being outside of a threshold, performing a safe state operation.

Abstract: A generator set for generating an alternating current, includes a primary power unit, an alternating current generator, and a secondary power unit. The alternating current generator is rotationally coupled to the primary power unit, and converts power provided by the primary power unit into an electric power. The secondary power unit is connectable to the alternating current generator so as to increase the power generated by the alternating current generator.

Abstract: A vector control method and system of a permanent magnet motor (PMM) comprising a step of counting parameters of components of a power cable line (channel) (PCL), between the PMM and a regulated voltage source (RVS), wherein counting at least parameters of an inductance, a resistance and a capacitance of elements of the PCL. Providing voltage sag compensation mode by controlling the RVS DC-link voltage parameter using a voltage sag control unit, and controlling the PMM frequency parameter by changing current and/or voltage PMM parameters counting changes in the RVS DC-link voltage parameter and a nominal power parameter of the PMM.

Abstract: A variable speed drive includes an output terminal for delivering a drive voltage; a power inverter for generating the drive voltage; a drive controller for controlling the generation of the drive voltage; and a current sensor for providing a drive current intensity signal to the drive controller. The drive controller includes a PWM generator; a control law module; and a state variable estimator estimating a state variable of the controlled AC electric motor.