Motor control apparatus for controlling a power supply to an electrical motor

An automation system comprising a motor control apparatus and an electrical multiphase AC motor connected to the output terminals of said motor control apparatus, wherein the motor control apparatus is provided for controlling a power supply to the electrical multiphase AC motor, said motor control apparatus comprising an overcurrent protection circuit having at least one input terminal adapted to receive a phase supply voltage from a power supply network and having a power switch through which the electrical multiphase AC motor is adapted to receives an electrical load current and having a current rise speed sensor component connected in series with the power switch of the overcurrent protection circuit,

• wherein the current rise speed sensor component of the overcurrent protection circuit is adapted to generate directly a voltage drop corresponding to the current rise speed of the electrical load current flowing from the input terminal of the motor control apparatus via the current rise speed sensor component and the power switch to the output terminal,
• said overcurrent protection circuit further having a driver circuit which is adapted to detect an occurring overcurrent depending on the voltage drop generated by the current rise speed sensor component and depending on a non-linear voltage drop along the power switch and which is adapted to switch off said power switch upon detection of an overcurrent within a switch-off period of less than one millisecond, wherein the driver circuit is adapted to operate independently from a control unit of said motor control apparatus to provide protection against an overcurrent by switching off the power switch if the generated voltage drop plus the voltage drop along the power switch applied as a sum voltage to an input of the driver circuit exceeds a configurable threshold voltage;
• said motor control apparatus further comprising
• a power supply control circuit having a voltage sensor component adapted to measure at the input terminal the received phase supply voltage notified to the control unit of the motor control apparatus to provide a supply voltage profile,
• wherein the control unit is adapted to control an electrical power supplied to the electrical multiphase AC motor depending on an operation mode of the electrical multiphase AC motor,
• wherein the electrical power supply to the electrical motor connected to the output terminal of the motor control apparatus is controlled by a processor or FPGA circuit of the control unit depending on the operation mode of the electrical multiphase AC motor and on the basis of the supply voltage profile and a load current profile.

An electrical multiphase AC motor comprising a motor control apparatus, said motor control apparatus comprising an overcurrent protection circuit having at least one input terminal adapted to receive a phase supply voltage from a power supply network and having a power switch through which the electrical multiphase AC motor is adapted to receives an electrical load current and having a current rise speed sensor component connected in series with the power switch of the overcurrent protection circuit, wherein the current rise speed sensor component of the overcurrent protection circuit is adapted to generate directly a voltage drop corresponding to the current rise speed of the electrical load current flowing from the input terminal of the motor control apparatus via the current rise speed sensor component and the power switch to the output terminal,

• said overcurrent protection circuit further having a driver circuit which is adapted to detect an occurring overcurrent depending on the voltage drop generated by the current rise speed sensor component and depending on a non-linear voltage drop along the power switch and which is adapted to switch off said power switch upon detection of an overcurrent within a switch-off period of less than one millisecond, wherein the driver circuit is adapted to operate independently from a control unit (8) of said motor control apparatus to provide protection against an overcurrent by switching off the power switch if the generated voltage drop plus the voltage drop along the power switch applied as a sum voltage to an input of the driver circuit exceeds a configurable threshold voltage;
• said motor control apparatus further comprising a power supply control circuit having a voltage sensor component adapted to measure at the input terminal the received phase supply voltage notified to the control unit of the motor control apparatus to provide a supply voltage profile,
• wherein the control unit is adapted to control an electrical power supplied to the electrical multiphase AC motor depending on an operation mode of the electrical multiphase AC motor,
• wherein the electrical power supply to the electrical motor connected to the output terminal of the motor control apparatus is controlled by a processor or FPGA circuit of the control unit depending on the operation mode of the electrical multiphase AC motor and on the basis of the supply voltage profile and a load current profile.

A busbar system comprising a motor control apparatus and busbars to which at least one input terminal of said motor control apparatus (is connected, said motor control apparatus comprising an overcurrent protection circuit having at least one input terminal adapted to receive a phase supply voltage from a power supply network and having a power switch through which the electrical multiphase AC motor is adapted to receives an electrical load current and having a current rise speed sensor component connected in series with the power switch of the overcurrent protection circuit, wherein the current rise speed sensor component of the overcurrent protection circuit is adapted to generate directly a voltage drop corresponding to the current rise speed of the electrical load current flowing from the input terminal of the motor control apparatus via the current rise speed sensor component and the power switch to the output terminal,

• said overcurrent protection circuit further having a driver circuit which is adapted to detect an occurring overcurrent depending on the voltage drop generated by the current rise speed sensor component and depending on a non-linear voltage drop along the power switch and which is adapted to switch off said power switch upon detection of an overcurrent within a switch-off period of less than one millisecond, wherein the driver circuit is adapted to operate independently from a control unit of said motor control apparatus to provide protection against an overcurrent by switching off the power switch if the generated voltage drop plus the voltage drop along the power switch applied as a sum voltage to an input of the driver circuit exceeds a configurable threshold voltage;
• said motor control apparatus further comprising a power supply control circuit having a voltage sensor component adapted to measure at the input terminal the received phase supply voltage notified to the control unit of the motor control apparatus to provide a supply voltage profile,
• wherein the control unit is adapted to control an electrical power supplied to the electrical multiphase AC motor depending on an observed operation mode of the electrical multiphase AC motor,
• wherein the electrical power supply to the electrical motor connected to the output terminal of the motor control apparatus is controlled by a processor or FPGA circuit of the control unit depending on the operation mode of the electrical multiphase AC motor and on the basis of the supply voltage profile and a load current profile.

A fuse housing, comprising an integrated motor control apparatus, said motor control apparatus comprising an overcurrent protection circuit having at least one input terminal adapted to receive a phase supply voltage from a power supply network and having a power switch through which the electrical multiphase AC motor is adapted to receives an electrical load current and having a current rise speed sensor component connected in series with the power switch of the overcurrent protection circuit, wherein the current rise speed sensor component of the overcurrent protection circuit is adapted to generate directly a voltage drop corresponding to the current rise speed of the electrical load current flowing from the input terminal of the motor control apparatus via the current rise speed sensor component and the power switch to the output terminal,

• said overcurrent protection circuit further having a driver circuit which is adapted to detect an occurring overcurrent depending on the voltage drop generated by the current rise speed sensor component and depending on a non-linear voltage drop along the power switch and which is adapted to switch off said power switch upon detection of an overcurrent within a switch-off period of less than one millisecond, wherein the driver circuit is adapted to operate independently from a control unit of said motor control apparatus to provide protection against an overcurrent by switching off the power switch if the generated voltage drop plus the voltage drop along the power switch applied as a sum voltage to an input of the driver circuit exceeds a configurable threshold voltage;
• said motor control apparatus further comprising
• a power supply control circuit having a voltage sensor component adapted to measure at the input terminal the received phase supply voltage notified to the control unit of the motor control apparatus to provide a supply voltage profile,
• wherein the control unit is adapted to control an electrical power supplied to the electrical multiphase AC motor depending on an observed operation mode of the electrical multiphase AC motor,
• wherein the electrical power supply to the electrical motor connected to the output terminal of the motor control apparatus is controlled by a processor or FPGA circuit of the control unit depending on the operation mode of the electrical multiphase AC motor and on the basis of the supply voltage profile and a load current profile.

A plug device comprising an integrated motor control apparatus, wherein the plug device is pluggable into a socket of a motor, said integrated motor control apparatus comprising an overcurrent protection circuit having at least one input terminal adapted to receive a phase supply voltage from a power supply network and having a power switch through which the electrical multiphase AC motor is adapted to receives an electrical load current and having a current rise speed sensor component connected in series with the power switch of the overcurrent protection circuit, wherein the current rise speed sensor component of the overcurrent protection circuit is adapted to generate directly a voltage drop corresponding to the current rise speed of the electrical load current flowing from the input terminal of the motor control apparatus via the current rise speed sensor component and the power switch to the output terminal, said overcurrent protection circuit further having a driver circuit which is adapted to detect an occurring overcurrent depending on the voltage drop generated by the current rise speed sensor component and depending on a non-linear voltage drop along the power switch and which is adapted to switch off said power switch upon detection of an overcurrent within a switch-off period of less than one millisecond, wherein the driver circuit is adapted to operate independently from a control unit of said motor control apparatus to provide protection against an overcurrent by switching off the power switch if the generated voltage drop plus the voltage drop along the power switch applied as a sum voltage to an input of the driver circuit exceeds a configurable threshold voltage, said integrated motor control apparatus further comprising a power supply control circuit having a voltage sensor component adapted to measure at the input terminal the received phase supply voltage notified to the control unit of the motor control apparatus to provide a supply voltage profile,

• wherein the control unit is adapted to control an electrical power supplied to the electrical multiphase AC motor depending on an operation mode of the electrical multiphase AC motor,
• wherein the electrical power supply to the electrical motor connected to the output terminal of the motor control apparatus is controlled by a processor or FPGA circuit of the control unit depending on the operation mode of the electrical multiphase AC motor and on the basis of the supply voltage profile and a load current profile.