Current-source power converting apparatus
AssigneeKabushiki Kaisha Yaskawa Denki
InventorKatsutoshi Yamanaka
Life of this patent
Estimating the term…
Abstract
A current-source power converting apparatus in an embodiment includes a current-reference generating unit, a polarity determining unit, a PWM-pulse-signal generating unit, and a drive-signal generating unit. The current-reference generating unit outputs a phase current reference and a line-to-line current reference. The polarity determining unit determines a polarity of the phase current reference. The PWM-pulse-signal generating unit generates a PWM pulse signal by comparing the line-to-line current reference and a carrier signal. The drive-signal generating unit generates a drive signal that drives each of a plurality of switching elements, based on the PWM pulse signal and a polarity of the phase current reference.
Claims8
A current-source power converting apparatus comprising:
- a plurality of switching elements that are provided to correspond to each of output phases of three phases;
- a current-reference generating unit that outputs a plurality of phase current references corresponding to the output phases, respectively, and a plurality of line-to-line current references corresponding to output interphases, which are different from each other, respectively;
- a polarity determining unit that determines polarities of the phase current references;
- a PWM-pulse-signal generating unit that generates a plurality of PWM pulse signals corresponding to the output interphases, respectively, by comparing the line-to-line current references and a carrier signal;
- and
- a drive-signal generating unit that generates drive signals corresponding to the output phases, respectively, based on AND operations of two or more of the PWM pulse signals and polarities of two or more of the phase current references, the drive signals driving the switching elements.
A current-source power converting apparatus comprising:
- a plurality of switching means that are provided to correspond to each of output phases of three phases;
- a current-reference generating means for outputting a plurality of phase current references corresponding to the output phases, respectively, and a plurality of line-to-line current references corresponding to output interphases, which are different from each other, respectively;
- a polarity determining means for determining polarities of the phase current references;
- a PWM-pulse-signal generating means for generating a plurality of PWM pulse signals corresponding to the output interphases, respectively, by comparing the line-to-line current references and a carrier signal;
- and
- a drive-signal generating means for generating drive signals corresponding to the output phases, respectively, based on AND operations of two or more of the PWM pulse signals and polarities of two or more of the phase current references, the drive signals driving the switching elements.
Dependencies are inferred from the claim text.