Apparatus for carrying out improved control of rotary machine
AssigneeDenso Corporation
InventorsTsuyoshi Yamamoto, Takahiro Yamada
Life of this patent
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Abstract
In an apparatus, a norm setter sets, based on a request torque for a rotary machine and a rotational velocity of a rotor, a norm of a vector of an output voltage in a two-phase rotating coordinate system defined in the rotor. A phase setter sets, based on a deviation between a generated torque and the request torque, a phase of the vector of the output voltage of the power converter in the two-phase rotating coordinate system. A drive signal determiner determines, based on the norm set by the norm setter and the phase set by the phase setter, a drive signal, and applies the drive signal to a switching member to thereby drive the switching member such that the generated torque is adjusted to the request torque.
Claims18
An apparatus for driving a switching member of a power converter so as to generate, from a voltage of a power supply source, a variable output voltage of the power converter, the output voltage being applied to a rotary machine and generating torque in the rotary machine for rotating a rotor, the apparatus comprising:
- a waveform setter that sets a waveform of the output voltage of the power converter based on any one of:
- at least two of a request torque for the rotary machine, a rotational velocity of the rotor, a command voltage for controlling the torque in the rotary machine to the request torque, and the voltage of the power source;
- and a voltage utilization factor of the power converter;
- a phase setter that sets, based on any one of:
- a deviation between the generated torque and the request torque;
- and a deviation between a command current for the rotary machine defined by the request torque and an actual current flowing in the rotary machine, a phase of the output voltage of the power converter in the two-phase rotating coordinate system;
- and
- a drive signal determiner that determines, based on the waveform of the output voltage by the waveform setter and the phase set by the phase setter, a drive signal, and applies the drive signal to the switching member to thereby drive the switching member such that the generated torque is adjusted to the request torque.
A control system comprising:
- a power converter;
- and
- an apparatus for driving a switching member of the power converter so as to generate, from a voltage of a power supply source, a variable output voltage of the power converter, the output voltage being applied to a rotary machine and generating torque in the rotary machine for rotating a rotor, the apparatus comprising:
- a waveform setter that sets a waveform of the output voltage of the power converter based on any one of:
- at least two of a request torque for the rotary machine, a rotational velocity of the rotor, a command voltage for controlling the torque in the rotary machine to the request torque, and the voltage of the power source;
- and a voltage utilization factor of the power converter;
- a phase setter that sets, based on any one of:
- a deviation between the generated torque and the request torque;
- and a deviation between a command current for the rotary machine defined by the request torque and an actual current flowing in the rotary machine, a phase of the output voltage of the power converter in the two-phase rotating coordinate system;
- and
- a drive signal determiner that determines, based on the waveform of the output voltage by the waveform setter and the phase set by the phase setter, a drive signal, and applies the drive signal to the switching member to thereby drive the switching member such that the generated torque is adjusted to the request torque.
Dependencies are inferred from the claim text.