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BRUSHLESS DC MOTORS

BRUSHLESS DC MOTORS
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BLDC Gearmotor Size 9 BLDC Gearmotor Size 5 Portescap Brushless DC motors are extremely reliable and built to deliver the best performances. Their high power density allows a reduction in the overall size of most of the applications. How to select your Brushless Motor They feature silent running even at high speed. The autoclavable Brushless Terminology option is ideal for medical applications. Where to apply your Brushless Motor

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Why a Brushless motor Housing Lamination Stack Flange Winding Print with Hall sensors Permanent Magnet Bearing Brushless Technology Conventional DC motors use a stationary magnet with a rotating armature combining the commutation segments and brushes to provide automatic commutation. In comparison, the brushless DC motor is a reversed design: the permanent magnet is rotating whereas the windings are part of the stator and can be energized without requiring a commutator-and-brush system. Therefore this motor type achieves very long, trouble-free life even while • o mechanical commutation N...

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How to select your Brushless motor Hall Sensors In general, BLDC motors have three phase windings. The easiest way is to power two of them at a time, using Hall sensors to know the rotor position. A simple logic allows for optimal energizing of the phases as a function of rotor position, just like the commutator and brushes are doing in the conventional DC motor. Possible applications: high variation of speed and/or load, positioning Sensorless With this solution the motor includes no sensors or electronic components and it is therefore highly insensitive to hostile environments. In all...

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Explanation of Specifications MOTOR PART SPECIFICATION BACK-EMF CONSTANT Ke [V/krpm] +/-8% Voltage induced at a motor speed of 1’000 rpm ELECTRICAL TIME CONSTANT te [ms] The time required for current to reach 63% of its final value for a fixed voltage level Measured with a frequency of 1 kHz between 2 phases of the stalled motor. The value gives an order of magnitude Power developed at 10krpm so the motor doesn’t exceed its thermal rating MAX CONTINUOUS POWER DISSIPATION [W] The maximum power the motor can dissipate without exceeding its thermal rating MAX CONTINUOUS STALL CURRENT OR MAX...

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Where to apply your Portescap Brushless motor SURGICAL HAND TOOL When you’re an orthopedic surgeon performing multiple operations in a day, hand tools that are powerful and precise are a must. However, a smaller, more lightweight version of the tool would be a welcome relief. Portescap supplies customized solutions that are exceptionally lightweight but do not compromise performance. Its lightweight feel and low-heat feature reduce hand fatigue in surgeons. Suitable sealing and optimized design assure adequate autoclaving and prevent contamination. So surgeons, and their patients, have a...

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Timing Relationship Timing relationships between the motor phases and the hall sensors that support cummutation (four pole motor). CW rotation from shaft end. Motor is supplied with connector AMP #640430-8 which may be removed.

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Miniature Motors Timing relationships between the motor phases and the hall sensors that support cummutation (four pole motor). CW rotation from shaft end. Motor is supplied with connector AMP #640430-8 which may be removed. Slotted BLDC Timing Relationship

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