Power converter, motor driver, and refrigeration cycle applied equipment

A power converter comprising:

• a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;
• a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;
• an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor;
• and
• a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter, wherein
• the controller is adapted to control the inverter such that the second physical quantity is equal to the first physical quantity.

A power converter comprising:

• a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;
• a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;
• an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor;
• and
• a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter, wherein
• the controller is adapted to control the inverter such that the second physical quantity is equal to the first physical quantity, wherein
• the controller is adapted to detect the second physical quantity in accordance with timing of conduction or nonconduction of a semiconductor switching element included in the inverter.

A power converter comprising:

• a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;
• a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;
• an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor;
• a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter;
• and
• a filter circuit adapted to perform filter processing on the first physical quantity and the second physical quantity, wherein
• the controller is adapted to control at least one of the converter or the inverter on a basis of outputs of the filter circuit.

A power converter comprising:

• a converter adapted to rectify a power supply voltage applied from an alternating-current power supply;
• a smoothing capacitor adapted to smooth a rectified voltage output from the converter into a direct-current voltage containing a ripple;
• an inverter adapted to convert the direct-current voltage smoothed by the smoothing capacitor into an alternating-current voltage to be applied to a motor;
• and
• a controller adapted to control such that a first physical quantity is equal to a second physical quantity, the first physical quantity representing an operation state of the converter and the second physical quantity representing an operation state of the inverter, wherein the controller is adapted to:
• perform filter processing on a detection value of the first physical quantity and a detection value of the second physical quantity;
• and
• control at least one of the converter or the inverter on a basis of outputs reflecting the filter processing.