Drive circuit for driving an electronically commutated motor
AssigneeDiehl AKO Stiftung & Co. KG
InventorsMARTIN WEINMANN, ANDREAS SCHMID, SEBASTIAN TINIUS
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Abstract
A drive circuit for driving an electronically commutated motor includes an AC terminal to which a power supply grid is connectable, a rectifier connected on the input side to the AC terminal, an inverter connected on the input side to the rectifier and to which the motor phases of the motor are connectable, and an intermediate DC voltage circuit between the rectifier and the inverter. An EMC filter includes a capacitive feedback coupling having at least one Y-capacitor connected between one pole of the intermediate DC voltage circuit and protective ground and overall incorporating stronger insulation than basic insulation.
Claims7
A drive circuit for driving an electronically commutated motor, the drive circuit comprising:
- an AC terminal to be connected to a power supply grid;
- a rectifier having an input side connected to said AC terminal;
- an inverter to be connected to motor phases of the motor, said inverter having an input side directly or indirectly connected to said rectifier;
- an intermediate DC voltage circuit connected between said rectifier and said inverter;
- and
- an EMC filter including a capacitive feedback coupling having at least one Y-capacitor connected between one pole of said intermediate DC voltage circuit and protective ground, said capacitive feedback coupling having overall having stronger insulation than basic insulation.
Dependencies are inferred from the claim text.