BLDC motor for smooth running and long runtime

Details: Released: 15.11.2021; Last updated: 14.02.2023; Hits: 15619

BLDC motors are all-rounders and are therefore suitable for countless applications. This is how he walks BLDC motor for example in power tools, pumps, conveyor belts, Robot and other machines efficiently move electrical energy. With their property of high power density, a large number of z. B. in Automobile Save weight and thus lower fuel and pollutant emissions. Minebea Mitsumi offers such a Brushless Motor Portfolio. We report here on applications and new developments.

Contents

BLDC motor extends battery life in power tools
BLDC motors ensure happy residents in the digital cowshed
Simply program BLDC motors via PC

In the brushless DC motors from Minebea Mitsumi, energetic permanent magnets ensure high acceleration with a very high degree of efficiency. The BLDC motors offer a extremely smooth running and long service life. The rotor position is reported via Hall sensors. Minebea also optionally offers brushless DC motors with encoders with single to multi-stage for high-resolution positioning gearboxes.

BLDC motor: when the DC motor reaches its limits

BLDC motor extends battery life in power tools

02.07.2021 | Not so long ago, a well-equipped hobby workshop housed a Hodgepodge of cordless tools with many rechargeable batteries and their chargers. Not only did you quickly lose track of things, but in the worst case scenario you also had the wrong battery with you on the construction site. So it was time for manufacturers and users to clean up.

One battery for all tools

Battery operated manufacturer Tools therefore strive to common standards. One battery for all tools should put an end to the countless chargers and batteries. the Power for all Alliance is one of the largest cross-brand battery systems. Many tool manufacturers share the 18 volt battery with just one charger. This results in cost savings and customer loyalty.

Well-known manufacturers of Power Tools started to equip their tools with the same batteries. As a result, tools without batteries and chargers suddenly became cheaper. The share of battery-operated power tools in Germany is currently around 50% - and the trend is rising. Cordless boron screwdrivers are particularly popular here.

BLDC motor increases runtime

For the battery operated power tools Minebea Mitsumi offers brushless DC motors (BLDC motors), which are developed at Minebea Mitsumi Technology Center Europe GmbH in Villingen-Schwenningen. The optimal coordination of electronics and Motor takes place in cooperation with the customer.

DC motor and other drives for medical technology

Devices and machines powered by a brushless motor have one better efficiency and the battery typically lasts 10 to 20% longer. Compared to a busty motor, the efficiency is 5 to 30% higher. The significantly higher peak performance of a brushless motor is noticeable in the overload range of the machines. Tools can be designed more compactly, because the space requirement of the BLDC motor is less than that of a brushed motor.

Via the electronics, the brushless DC motors can be used with many smart additional functions equip. The BLDC motor develops its full power in the lower speed range, especially for short, fast screwdriving jobs. Even if you reduce the pressure on the accelerator switch and thus the engine speed, the maximum torque develops. This prevents, for example, slipping when inserting screws.

Electronics as the key to performance

The Electronics is the basis for the performance of brushless motors. If a brushed motor is replaced by a brushless motor in a power tool, the potential of this technology is only partially exploited. That doesn't justify the higher price of such tools either. Therefore, cordless tools with classic brush motors are still often used.

However, many speak Tool manufacturer regularly with professional users in order to develop new products precisely to meet their requirements and wishes. The focus here is on service life and maintenance costs. The brushless DC motor ensures that users can enjoy their power tools for longer and that maintenance costs are significantly reduced. And so the further development of batteries and BLDC motors is the key to an almost perfect power tool.

BLDC motors ensure happy residents in the digital cowshed

19.11.2018 | 20 years ago, we would probably have expected innovative high-tech applications and state-of-the-art sensors to be the last thing in the cowshed. However, this traditional image of agriculture has long been outdated. However, today is almost every fifth cowshed in Germany jumped on the bandwagon of digitization. The BLDC motors from Minebea Mitsumi should not be missing.

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Simply program BLDC motors via PC

18.04.2014 | Parameters via PC on the brushless DC motor transfer Without external programming costs, time-consuming explorations and excessively long project times: Precision Motors Deutsche Minebea (PM DM) has developed a wide range of BLDC motors. A newly developed family of electronics makes them flexible to use and selectable. For example, speed, current consumption, temperature, position and voltage can be measured, monitored and precisely controlled via an integrated closed loop control.

Especially for battery-operated applications, for example, the BLDC 40 motor can completely switch off the power supply to the motor electronics. The threshold for this discharge can be freely parameterized. The BLDC 40 is a typical internal rotor EC motor with an efficiency of 85% including electronics. The intelligent electronics measure the position and direction of rotation of the rotor via the integrated Hall sensors, thus realizing simple positioning tasks.

In many cases this function is sufficient to provide an additional Rotary encoder to make superfluous. Several motors can be synchronized via the integrated position measurement. Algorithms for realizing an electronic wave are already integrated in the firmware. The motors are controlled analogue via simple PWM control, LIN / CAN bus or single wire UART. Sinus commutation and pure torque control via the current with or without speed limitation are also possible.

Schaeffler DC motor DC motor as an all-round talent for countless applications

Without cumbersome driver installation, the user can use Programming box Simply enter all the important motor parameters such as start-stop, current, speed, etc. with a commercially available USB cable via your PC, and easily approach your application. Thanks to the bus-compatible interface, several DC motors can also be parameterized and operated at the same time. In addition, all specific measured values of the motor can be read out and saved cyclically for later evaluation. An app for Android devices is also being planned.