An ECU includes a plurality of motor driving circuits for driving at least one motor, a plurality of computers and a plurality of clock circuits. A first computer, which is at a synchronization signal transmission-side, transmits a synchronization signal to a second computer, which is at a synchronization signal reception-side. The first computer and the second computer execute a plurality of specific periodic processes, which are processes executed at cycle periods (for example, 200 s, 400 s) of different natural number multiples of a cycle period (for example, 200 s) of the synchronization signal and need be synchronized. Each timing of the plurality of specific periodic processes is determined based on one synchronization signal.

An electrical serially-connected control system for driving motors in series includes a control device, at least one processing device, and a transmission medium connected between the two devices for mutual communication. The control device includes a power rectifier transforming an external power, a signal converter converting each external command signal, and an integration unit connected to the rectifier and the converter for integrating the transformed power with each converted command signal to create commands. The processing device includes a voltage regulator connected to the transmission medium for stabilizing the power come from the command, a power storage module connected to the voltage regulator and each motor, a signal filter connected to the transmission medium for processing the command signal come from the command, a controller connected with the voltage regulator, the power storage module and the signal filter, and a signal generator connected to the controller.

An electrical serially-connected control system for driving motors in series includes a control device, at least one processing device, and a transmission medium connected between the two devices for mutual communication. The control device includes a power rectifier transforming an external power, a signal converter converting each external command signal, and an integration unit connected to the rectifier and the converter for integrating the transformed power with each converted command signal to create commands. The processing device includes a voltage regulator connected to the transmission medium for stabilizing the power come from the command, a power storage module connected to the voltage regulator and each motor, a signal filter connected to the transmission medium for processing the command signal come from the command, a controller connected with the voltage regulator, the power storage module and the signal filter, and a signal generator connected to the controller.

A propulsion channel for aircraft at least one first dual-fed polyphase asynchronous rotating electric machine configured to be mechanically coupled to a turbine engine. The propulsion channel further includes at least one second polyphase rotating electric machine electrically coupled to the first asynchronous rotating electric machine, and a control and storage module configured to control the first polyphase asynchronous rotating electric machine. The module is connected to the first dual-feed polyphase asynchronous rotating electric machine as well as to the at least second polyphase rotating electric machine. The at least second polyphase rotating electric machine includes a polyphase synchronous rotating electric machine with permanent magnet.

An exemplary electrical system may include a power plant operable to provide motive power, and a first and a second motor/generator operatively coupled to a common gear shaft, and to the power plant via a gearbox and drive shaft. The exemplary electrical system may further include a system controller configured to selectively operate at least one of the first motor/generator and the second motor/generator in one of a motor operating mode and a generator operating mode based on at least one parameter. The at least one parameter may be, but is not limited to, vibration and torque. In the motor operating mode, the first and/or second motor/generator provides power to the power plant. In the generator operating mode, the first and/or the second motor/generator extracts power from the power plant.

An exemplary electrical system may include a power plant operable to provide motive power, and a first and a second motor/generator operatively coupled to a common gear shaft, and to the power plant via a gearbox and drive shaft. The exemplary electrical system may further include a system controller configured to selectively operate at least one of the first motor/generator and the second motor/generator in one of a motor operating mode and a generator operating mode based on at least one parameter. The at least one parameter may be, but is not limited to, vibration and torque. In the motor operating mode, the first and/or second motor/generator provides power to the power plant. In the generator operating mode, the first and/or the second motor/generator extracts power from the power plant.

A decrease in reliability due to heat during operation of a dynamic brake is prevented. Motor drive device includes first controller, second controller, and dynamic brake. First controller controls first motor. Second controller controls second motor. Second motor cools at least one of heat generator and heat radiator. Dynamic brake, which includes resistors connected among terminals of first motor, short-circuits terminals to cause resistors to consume kinetic energy of first motor to stop first motor. While first motor is controlled to be in a standby state, second controller changes the rotation speed of second motor according to the rotation speed of first motor. Heat generator includes resistors.

A muti-motor integrated power circuit includes: a power input conversion circuit configured to convert a power input signal from a standby power source to a busbar power signal; a power factor correction circuit configured to convert and superpose an AC input signal of the AC power source with the busbar power signal; a first isolation circuit configured to convert the busbar power signal to an isolation output signal; a first switch sub-circuit configured to convert the busbar power signal to a first AC signal; an isolation transformer configured to convert the first AC signal to at least two second AC signals; a first power conversion circuit or an isolation transformer configured to convert the isolation output signal or the second AC signal to a DC drive signal; and a second power conversion circuit configured to convert the isolation output signal or the second AC signal to an AC drive signal.

A muti-motor integrated power circuit includes: a power input conversion circuit configured to convert a power input signal from a standby power source to a busbar power signal; a power factor correction circuit configured to convert and superpose an AC input signal of the AC power source with the busbar power signal; a first isolation circuit configured to convert the busbar power signal to an isolation output signal; a first switch sub-circuit configured to convert the busbar power signal to a first AC signal; an isolation transformer configured to convert the first AC signal to at least two second AC signals; a first power conversion circuit or an isolation transformer configured to convert the isolation output signal or the second AC signal to a DC drive signal; and a second power conversion circuit configured to convert the isolation output signal or the second AC signal to an AC drive signal.

A motor power source regulation circuit, a control method and an electronic device are provided. The motor power source regulation circuit includes a power factor correction circuit, an isolation circuit, a first power source conversion circuit, a second power source conversion circuit and a control circuit. The isolation circuit includes a first switch sub-circuit and an isolation transformer. The power factor correction circuit regulates an AC input signal to a first DC signal. The first switch sub-circuit converts the first DC signal to a first AC signal. The isolation transformer converts the first AC signal to two or more second AC signals. The first power source conversion circuit converts the second AC signal to a DC drive signal and outputs it to a DC motor. The second power source conversion circuit converts the second AC signal to an AC drive signal and outputs it to an AC motor.