Motor device for a switch drive of an electric switch
AssigneeSiemens Energy Global GmbH & Co. KG
InventorThomas Hilker
Life of this patent
Estimating the term…
Abstract
A motor assembly for a switch drive of an electric switch. The motor assembly has a brushless three-phase motor and an electronic control device for controlling the three-phase motor. The control device has a rectifier unit for rectifying a supply voltage of the motor assembly if the supply voltage is an AC voltage, and for reverse polarity protection if the supply voltage is a DC voltage. The control device also has a voltage measuring unit for detecting a rectifier output voltage of the rectifier unit, a switch unit for generating a pulse width-modulated drive AC voltage for the three-phase motor from the rectifier output voltage, and a control unit for actuating the switch unit according to the rectifier output voltage.
Claims13
A motor assembly for a switch drive of an electric switch, the motor assembly comprising:
- a brushless three-phase motor;
- an electronic controller for controlling said brushless three-phase motor, said electronic controller having:
- a rectifier for rectifying a supply voltage of the motor assembly when the supply voltage is an AC voltage and for polarity reversal protection when the supply voltage is a DC voltage;
- a voltage-measuring meter for detecting a rectifier output voltage of said rectifier;
- a switch for generating a pulse-width-modulated AC drive voltage for said brushless three-phase motor from the rectifier output voltage;
- and
- a further controller for actuating said switch depending on the rectifier output voltage.
A method for operating a motor assembly having a brushless three-phase motor and an electronic controller for controlling the brushless three-phase motor, the electronic controller having a rectifier unit, a voltage-measuring meter, a switch, and a further controller, which comprises the steps of:
- rectifying a supply voltage of the motor assembly by the rectifier unit when the supply voltage is an AC voltage and polarity reversal protection is provided when the supply voltage is a DC voltage;
- detecting a rectifier output voltage by the voltage-measuring meter;
- generating a pulse-width-modulated AC drive voltage for the brushless three-phase motor from the rectifier output voltage by the switch;
- actuating the switch by the further controller depending on the rectifier output voltage.
Dependencies are inferred from the claim text.