摘要:
Method of manufacturing a rotor assembly for a permanent-magnet-assisted synchronous motor, comprising the following steps: - cutting a plurality of laminations (2) of equal shape, each lamination being substantially circular and having a plurality of inner slots (3); - stacking said laminations (2) together so as to form a lamination stack (20), each lamination (2) being rotated of a predetermined angle with respect to the underlying one so that the slots (3) define continuous, axially skewed cavities (30) within the lamination stack (20); - injecting, through injection-molding, a polymer-bonded magnetic compound within said cavities (30) in order to define inner permanent magnets (4) of the rotor assembly (1) filling said cavities (30).
摘要:
Powertrain assembly (1), which is unusually compact and light, for an electric vehicle, comprising a housing (2) which contains: at least one electric motor (3) provided with a stator (30) which is rigidly associated with the housing (2) and a rotor (31) which can be rotationally driven with respect to said stator (30); and a transmission (5) designed to transmit the movement of the rotor (31) to a traction shaft (6); said traction shaft (6) comprising an outer portion (60) which projects from the housing (2) and to which a wheel hub (61) is rigidly coupled. The housing (2) comprises at least one hinging point (20) and at least one fastening point (21) for connecting it, as an individually movable unit, to the chassis (102) and to a shock-absorber group (101) of said electric vehicle (100), respectively.
摘要:
Method, which is efficient and cost-effective to implement, for controlling, at steady-state, a synchronous electric motor comprising a permanent magnet rotor and a stator provided with windings connected to an electrical grid (22) by means of a switch (21) controlled by a processing unit (30), said method comprising the following steps: - periodically switching on said switch (21) by means of a PWM output (33) of said processing unit (30); - continuously verifying the shift with respect to an ideal operating condition of the motor; - modifying the switched on period of the switch (21) in feedback to approach said ideal operating condition of the motor.
摘要:
A fans-motor assembly (1) for condenser laundry dryer machine, of unusually low cost and overall dimensions, comprising: a drive shaft (2) which can be associated in a rotating manner with a frame of a laundry dryer machine and designed to be connected by means of a transmission belt (100) to a rotating drum (101) thereof; a fan for the hot air (3) and a fan for the cold air (4) integral in rotation with said drive shaft (2) and designed to convey respectively a flow of hot air and a flow of cold air along separate paths of said laundry dryer machine; a synchronous permanent magnet electric motor (10) comprising an internal stator (5) traversed by said drive shaft (2) and an external rotor (6) integral during rotation with said drive shaft (2).
摘要:
Filter unit for aquariums (1), which allows a high efficiency of chemical-biological filtering with reduced times of recirculation of the water, comprising: a container (10), provided with a fluid inlet (11) and a fluid outlet (12) to allow the fluid communication thereof with an aquarium tank; pumping means intended for the circulation of a liquid flow inside said container (10) between said fluid inlet (11) and said fluid outlet (12) along at least one main path (100); a first filter (30), arranged to intercept all of the liquid flow which follows said main path (100), performing on it at least one mechanical filtering action; at least one second filter (40) arranged to perform at least one filtering action other than the mechanical one; said main path (100) dividing into at least one first slow subpath (100b) and a fast subpath (100a), said second filter (40) being arranged to intercept, slowing it down, only the part of the liquid flow which follows the first slow subpath (100b), the part of liquid flow which follows the fast subpath (100a) bypassing said second filter (40) without being slowed down by it.
摘要:
A detecting device of unbalance conditions, particularly for washing machines (1) and similar household appliances comprising a rotary drum (2a) supported by a tank (2) and activated by a synchronous electric motor (3) with an internal stator (5) having corresponding windings fixedly mounted on a central axis (10). The detecting device comprises an electronic control board (18) for the synchronous motor (3) supported by means of an axial extension of said stator (5) and incorporating at least one accelerometer (51) to constantly monitor the acceleration of said tank (2) and indirectly the unbalance of said washing machine (1) and the unbalance of a load comprised in the rotary drum (2a).