Allegro MicroSystems today announced three ICs: two analogue current sensors and a motor driver for fans. The first current sensor, ACS37630, is designed to be sat on top of a bus bar and partly ...

As previously mentioned, the feedback sensors include position sensors to track the rotor’s location, current sensors to measure the motor phase currents, voltage sensors to monitor the DC bus voltage ...

A new range of automotive-qualified current sensors is addressing the growing need for accurate, isolated current measurement ...

New Zealand based Raztec is offering open-loop current sensors that work up to 250A but are only 10mm across. Called RAZC, there are multiple devices, sensing between 40Amax and 250Amax, all with a ...

Open-loop current sensors have a definite price advantage over closed-loop counterparts. While you can use them in drive applications where torque accuracy isn't demanding — such as pump and fan ...

Improved energy efficiency and reduced system costs are the driving factors in modern motor control designs used in fans, pumps, compressors or geared motors. The implementation of sophisticated motor ...

To correctly drive motor system speed and torque, it requires feedback accuracy and signal integrity to provide stability inside the motor’s dynamic range. This article compares three motor control ...

Efficiency and power density are persistent challenges in high-current applications, particularly as systems become more ...

Bipolar Hall-effect sensors are used in BLDC motors to detect the position of the rotating magnet. In this example, an eight-pole motor with a three-phase winding uses three bipolar latching ...

In the first installment of this series, "Calculating a practical hotspot safety margin", we discussed how two-parameter thermal models assume that the entire motor, including windings, exhibits one ...