CONTROLLER-INTEGRATED MOTOR PUMP
First Claim
1. A controller-integrated motor pump, comprising:
- a pump;
a motor configured to drive said pump;
a control unit configured to control said motor; and
a discharge-side pressure measuring device configured to measure pressure of fluid at a discharge side of said pump,wherein said control unit is mounted on a motor casing of said motor, wherein said pump includesan impeller secured to a rotational shaft of said motor, anda pump casing in which said impeller is housed,wherein said control unit includesan inverter configured to produce alternating-current power having a frequency within a band that includes frequencies more than or equal to a commercial frequency,a pump controller configured to produce a torque command value for controlling operation of said pump, anda vector controller configured to determine a voltage command value for said inverter based on the torque command value, andwherein said motor has a rotor having a plurality of permanent magnets.
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Accused Products
Abstract
A controller-integrated motor pump is disclosed. The motor pump includes: a pump; a motor configured to drive the pump; a control unit configured to control the motor; and a pressure measuring device configured to measure pressure of fluid at a discharge side of the pump. The control unit is mounted on a motor casing. The control unit includes an inverter configured to produce alternating-current power having a frequency within a band that includes frequencies more than or equal to a commercial frequency, a pump controller configured to produce a torque command value for controlling operation of the pump, and a vector controller configured to determine a voltage command value for the inverter based on the torque command value. The motor has a rotor having a plurality of permanent magnets.
19 Citations
8 Claims
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1. A controller-integrated motor pump, comprising:
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a pump; a motor configured to drive said pump; a control unit configured to control said motor; and a discharge-side pressure measuring device configured to measure pressure of fluid at a discharge side of said pump, wherein said control unit is mounted on a motor casing of said motor, wherein said pump includes an impeller secured to a rotational shaft of said motor, and a pump casing in which said impeller is housed, wherein said control unit includes an inverter configured to produce alternating-current power having a frequency within a band that includes frequencies more than or equal to a commercial frequency, a pump controller configured to produce a torque command value for controlling operation of said pump, and a vector controller configured to determine a voltage command value for said inverter based on the torque command value, and wherein said motor has a rotor having a plurality of permanent magnets. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification