Abstract:
The present invention relates to an electrical household appliance with a brushless DC motor sensorless control scheme. The present invention more particularly relates to an electrical household appliance comprising at least one electric motor, a three-phase inverter driver circuit (4) capable of driving said at least one electric motor, said three-phase inverter driver circuit (4) comprising a converter that converts AC mains voltage to DC voltage and a driver circuit inverter stage that inverts the direct current.
Abstract:
The present invention relates to a printed circuit board having a substrate and a condensation sensing circuit (8) comprising an interdigital capacitor with an electrode pattern with at least a pair of electrodes of a condensation sensing element (9) in the form of microstrip lines on said substrate. Said condensation sensing circuit (8) comprises a microcontroller (1 ) that generates a square wave which is fed into a phase shifting stage (3) having said condensation sensing element (9).
Abstract:
The present invention relates to a hermetic type compressor (1) comprising a main motor (2) composed of a stator (3) and a rotor (4); a crankshaft (5) that transfers the movement received from the rotor (4); a piston-rod mechanism (6); a cylinder block (7) that bears the crankshaft (5) and the piston-rod mechanism (6); a casing (8) wherein the oil for lubrication of the movable components and the bearings (Y) is placed; a vertical channel (9) that opens into the crankshaft (5), and a oil suction apparatus (10) that is positioned in the channel (9).
Abstract:
The present invention relates to an electrical household appliance with a power module with a dynamically controlled continuous and discontinuous space vector pulse width modulation (CSVPWM, DSVPWM) scheme. The present invention more particularly relates to an electrical household appliance comprising an electric motor, a driver circuit capable of driving said electric motor, said driver circuit comprising a converter that converts AC mains voltage to DC voltage, a driver circuit inverter stage that inverts the direct current, said driver circuit inverter stage comprising an inverter power module (1 ) having high side and low side power switches (6, 7) with freewheeling diodes (5) in the form of a six-switch three-phase inverter connected to a DC bus, said electric motor being a brushless DC motor.
Abstract:
The present invention relates to an electrical household appliance with a power module with dynamically controlled switching frequency. The present invention more particularly relates to an electrical household appliance comprising an electric motor, a driver circuit capable of driving said electric motor, said driver circuit comprising a converter that converts AC mains voltage to DC voltage, a driver circuit inverter stage that inverts the direct current, said driver circuit inverter stage comprising an inverter power module (1 ) having high side and low side power switches (6, 7) with freewheeling diodes (5) in the form of a six-switch three-phase inverter connected to a DC bus, said electric motor being a brushless DC motor and motor position being determined in the manner that currents flowing through motor phases (2, 3, 4) are recreated.