Patent classifications
H02P4/00
Rotary electric machine apparatus
To provide a rotary electric machine apparatus which can make the rotary electric machine output torque, and can change characteristics of a rotary electric machine according to change of the DC power voltage, even if failure occurs in one DC power source. A rotary electric machine apparatus (1) is provided with a power source switching mechanism (23) that switches between the DC power of low voltage and the DC power of high voltage; a winding connection switching mechanism (24) that switches interconnection of the plural-phase windings between a first winding connection state, and a second winding connection state in which an induced voltage constant of windings becomes lower than the first winding connection state; a inverter (12) provided with the switching devices; and a controller (25) that switches the power source switching mechanism (23), switches the winding connection switching mechanism (24), and controls on/off of the switching devices.
Power supply system
A power supply system includes: a first power circuit having a first battery, a second power circuit having a second battery, a voltage converter which converts voltage between the first power circuit and the second power circuit, a power converter which converts power between the first power circuit and the drive motor, a power control unit which controls charge/discharge of the first and second batteries by operating the voltage converter and the power converter, a first voltage parameter acquisition unit which calculates an effective value for the closed circuit voltage of the first battery as a first voltage parameter, a second voltage parameter acquisition unit which calculates the static voltage of the second battery as a second voltage parameter, in which the power control unit causes power to discharge from the second battery so that the second voltage parameter becomes no more than the first voltage parameter.
Signal processor, filter, control circuit for power converter circuit, interconnection inverter system and PWM converter system
A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G:
Signal processor, filter, control circuit for power converter circuit, interconnection inverter system and PWM converter system
A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G:
OUTDOOR POWER EQUIPMENT WITH DISTRIBUTED MOTOR CONTROLLERS
Outdoor power equipment includes a drive motor configured to operate a drive wheel, a drive motor controller configured to control the drive motor, a first chore motor configured to drive a first chore device, and a first chore motor controller communicatively coupled to the drive motor controller. The first chore motor controller is configured to receive an operational state of the drive motor including a drive motor speed from the drive motor controller and operate the first chore motor based on the operational state of the drive motor.
OUTDOOR POWER EQUIPMENT WITH DISTRIBUTED MOTOR CONTROLLERS
Outdoor power equipment includes a drive motor configured to operate a drive wheel, a drive motor controller configured to control the drive motor, a first chore motor configured to drive a first chore device, and a first chore motor controller communicatively coupled to the drive motor controller. The first chore motor controller is configured to receive an operational state of the drive motor including a drive motor speed from the drive motor controller and operate the first chore motor based on the operational state of the drive motor.
POWER TOOL AND POWER TOOL SYSTEM
A power tool includes a power tool body. The power tool body is configured to be adapted to at least a first battery pack having a first nominal voltage and a first output terminal set and a second battery pack having a second nominal voltage and a second output terminal set, where the first nominal voltage is different from the second nominal voltage. The power tool body includes a first input terminal set configured to be selectively electrically connected to one of the first output terminal set and the second output terminal set to supply power to the power tool body.
POWER TOOL AND POWER TOOL SYSTEM
A power tool includes a power tool body. The power tool body is configured to be adapted to at least a first battery pack having a first nominal voltage and a first output terminal set and a second battery pack having a second nominal voltage and a second output terminal set, where the first nominal voltage is different from the second nominal voltage. The power tool body includes a first input terminal set configured to be selectively electrically connected to one of the first output terminal set and the second output terminal set to supply power to the power tool body.
SIGNAL PROCESSOR, FILTER, CONTROL CIRCUIT FOR POWER CONVERTER CIRCUIT, INTERCONNECTION INVERTER SYSTEM AND PWM CONVERTER SYSTEM
A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G:
where F(s) is a transfer function representing the predetermined process, ω.sub.0 is a predetermined angular frequency and j is the imaginary unit.
SIGNAL PROCESSOR, FILTER, CONTROL CIRCUIT FOR POWER CONVERTER CIRCUIT, INTERCONNECTION INVERTER SYSTEM AND PWM CONVERTER SYSTEM
A signal processor is configured to perform a process equivalent to performing a series of fixed-to-rotating coordinate conversion, a predetermined process and then rotating-to-fixed coordinate conversion, while maintaining linearity and time-invariance. The signal processor performs a process given by the following matrix G:
where F(s) is a transfer function representing the predetermined process, ω.sub.0 is a predetermined angular frequency and j is the imaginary unit.