Neugart motor Germany Neugart model Neugart price

Neugart motors refer to motors with speeds exceeding 10000r/min. Due to their high speed, their volume is much smaller than that of ordinary motors of the same power. Connected directly to the prime mover, they eliminate traditional reduction gears. With low rotational inertia, high-speed motors offer advantages such as high power density, effective material savings, high transmission efficiency, low noise, and fast dynamic response.

Neugart motor classification

Based on the excitation of the mover, motors can be divided into conventional linear synchronous motors with DC-excited mover poles and permanent magnet linear synchronous motors with permanent magnet mover poles. In the former, the magnitude of the excitation field is determined by the DC current. By controlling the excitation current, the tangential traction force and lateral attraction force of the motor can be changed. This motor structure allows separate control of tangential and lateral forces. In permanent magnet linear synchronous motors, the pole magnetic field is provided by permanent magnets, requiring no external power supply for excitation of the mover poles, which simplifies the motor structure and improves overall efficiency, although the pole magnetic field is not adjustable.

Neugart motor applications

A single-phase motor refers to an asynchronous motor powered by a 220V AC single-phase power supply. Because 220V power supply is very convenient and economical, and household electricity is also 220V, single-phase motors are not only widely used in production but are also closely related to people's daily lives. Especially with the increasing standard of living, the usage of single-phase motors in household appliances is growing. Production applications include micro water pumps, grinders, threshers, crushers, woodworking machinery, and medical devices. Household applications include electric fans, hair dryers, exhaust fans, washing machines, and refrigerators. There are many types, but the power is relatively low. These motors typically have two-phase windings on the stator and a standard squirrel-cage rotor. Different distributions of the two-phase windings on the stator and different power supply conditions can produce different starting and operating characteristics.

Neugart motor performance

The circuit driven by transistors, resistors, and diodes achieves adjustable speed forward and reverse drive for DC motors. Four diodes protect the transistors from the negative induced electromotive force generated by inductive components (motors). When the 74LS00 output is low, Q2 and Q4 are cut off, Q1 and Q3 conduct, and the output is high. When the 74LS00 output is high, Q2 and Q4 conduct, Q1 and Q3 are cut off, and the output is low. Power supply voltage 15—30v, maximum continuous output current 500mA/per motor, short-time (10 seconds) can reach 700mA, PWM frequency can go up to 30kHz (generally used 1—10kHz). High-current traces should be as short and thick as possible, and avoid passing through vias. If vias must be used, make them larger (>1mm) and create a ring of small vias on the pad, filling them with solder during welding to prevent burnout. Additionally, if zener diodes are used, the wires from the transistor emitter and collector to the power supply and ground should be as short and thick as possible; otherwise, the voltage drop on these wires during high current may burn out the diodes and conducting transistors. The PWM signal can be generated by timers, but since 51 internally provides only two timers, outputting signals with different duty cycles to three or more DC motors requires repeated timer settings, which is complex. We adopt a simpler method that not only provides different duty cycle input signals to more DC motors but also occupies only one timer resource. This method can be simply described as follows: Store the duty cycle information required by each DC motor in a section of memory. If the duty cycle is 1, save 0FFH (11111111B); if the duty cycle is 0.5, save 0F0H (11110000B) or any binary number containing 4 0s and 4 1s. That is, duty cycle = number of 1s / 8. The specific binary number selected depends on the output frequency requirements. To output a PWM signal to this DC motor, simply shift once per time slice to extract a fixed bit (implemented using bit addressing or the carry flag C) and send it to the motor port. Additionally, the shift algorithm depends on previous results, so it is best to regularly check or reset the shifted number to prevent persistent errors. The advantage of this algorithm is that it is an independent process capable of controlling multiple motors; the disadvantage is higher resource consumption and lower PWM frequency.

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