Abstract: A control device of an electric power supply apparatus controls a voltage applied to an inverter to fall within a voltage range between a first voltage that is the voltage of one of a first electric power supply and a second electric power supply and a second voltage that is the sum of the voltage of the first electric power supply and the voltage of the second electric power supply, by alternately switching between a series state in which a current loop that connects the first electric power supply, the second electric power supply, and a reactor in series with the inverter is formed, and a parallel state in which the first electric power supply and the second electric power supply are connected in parallel with the inverter as an electric load.

Abstract: An apparatus, system, and method are disclosed for an efficient hub motor. A stator is attached to a shaft. Coils are embedded in the stator in a circular pattern. Two rotors are rotatably coupled to the shaft with the stator between them. Permanent magnets are embedded in each rotor. Each permanent magnet and each core has a similar cross-sectional shape. The permanent magnets are positioned in a circular pattern corresponding to the coils. The permanent magnets are positioned so that when a coil aligns with a permanent magnet a next coil aligns between two magnets. Shorting bars connect exterior edges of the permanent magnets. A sequence control connects each coil so that current flows in a coil in one direction and the sequence control disconnects the coil and reconnects the coil with current flowing in the opposite direction in response to a set of permanent magnets aligning with a coil.

Abstract: A control apparatus for multiplexing a single distributed control amplifier to control multiple axes of motion in a multi-axis machine. In one example, the control apparatus comprises a distributed control motor amplifier, a first motor constructed and arranged to provide movement along a first axis of motion, a second motor constructed and arranged to provide movement along a second axis of motion, a first relay having a switch coupled to the distributed control motor amplifier, a first contact coupled to the first motor, a second contact coupled to the second motor, and an input for receiving an actuation signal, wherein the relay is configured to be manipulated between a first state in which the switch is electrically connected to the first contact a second state in which the switch is electrically connected to the second contact, in response to the actuation signal.

Abstract: At least two asynchronous AC induction electrical machines in parallel connection with the power source respectively include a main winding and control winding for operating the electrical machines, wherein the individually load driving operations of the two electrical machines in cross-interlocked parallel connection with the power source respond to changes in individual electrical machine loading statuses to provide variable impedance operation so as to change the end voltage ratio between the individual electrical machines.

Abstract: A radiator blower, in particular for motor vehicles, is indicated that comprises a plurality of individual fans (11, 12), each having an electrical drive motor (13, 14), and a plurality of switches (S1, S2, S3), each capable of being switched over into two positions, by means of which the drive motors (13, 14) are capable of being turned on and back off individually or in a series or parallel connection. To prevent disturbing noises from developing when the individual fan (11, 12) comes to rest after being turned off, when the operating drive motor or motors (13, 14) is/are turned off, an electronic control unit (20) forces the switches (S1, S2, S3)—at least temporarily—over into switch positions that bring about a short-circuiting of the turned-off drive motor or motors (FIG. 1).

Abstract: A motor control apparatus includes a direct-current power source and an inverter circuit, which includes a switching element. The motor control apparatus receives a current command value in every control cycle and calculates a current deviation accumulated value by accumulating the current deviation between the received current command value and the actual current value that flows through a coil of a motor. The motor control apparatus then computes a voltage command value in accordance with the current deviation accumulated value and controls the switching timing of the switching element based on the voltage command value. The motor control apparatus judges whether the computed voltage command value exceeds a range of the voltage that can be output from the inverter circuit and causes saturation. If it is judged that the voltage command value is saturated, the motor control apparatus restricts the accumulation of the current deviation.

Abstract: A load in an electrical apparatus is driven by two motors M1, M2. Switching means (R1, R2) switches the motors M1, M2 between: a series configuration, in which the motors M1, M2 are connected in series across a power supply and driven with a dc supply; and a parallel configuration in which the motors M1, M2 are connected in parallel across the power supply and driven with an ac supply. In the series configuration, a bridge rectifier BR is switched across the ac supply to provide the dc supply for the motors M1, M2 and in the parallel configuration, the rectifier BR is removed from the circuit. The arrangement can be used to drive a drum of a washing machine or a load in some other kind of appliance.

Abstract: A solid-state direct current motor control apparatus including a programmed microprocessor operative with a plurality of series motors to determine the selection of a power mode of operation, a brake mode of operation and a coast mode of operation, with a desired energization of particular motor fields before the brake mode of operation.