WEISS motor, Germany WEISS model, WEISS price

WEISS motor is a discrete-value control motor that converts electrical pulse excitation signals into corresponding angular or linear displacement. This motor moves one step for each input electrical pulse, so it is also called a pulse motor. It is a special micro-motor that converts electrical pulse signals into angular displacement to control rotor rotation. It serves as an actuator in automatic control devices. For each pulse signal input, the stepper motor advances one step, hence it is also known as a pulse motor. Stepper motors are widely used in peripheral equipment of digital computers, as well as in printers, plotters, and disk drives. The drive power supply of a stepper motor consists of a variable-frequency pulse signal source, a pulse distributor, and a pulse amplifier, which provide pulse current to the motor windings. The operating performance of a stepper motor depends on the good coordination between the motor and the drive power supply. The advantages of stepper motors include no cumulative error, simple structure, convenient use and maintenance, low manufacturing cost, and high ability to drive load inertia. They are suitable for small and medium-sized machine tools and applications with low speed and precision requirements. The disadvantages are lower efficiency, significant heat generation, and occasional "step loss".

WEISS motor power supply frequency conversion

Motor power supply: AC motors generally adopt a three-phase system because three-phase AC motors have obvious advantages over single-phase motors in terms of performance indicators, raw material utilization, and price. Three-phase motors of the same power rating are smaller, lighter, and cheaper than single-phase motors. Three-phase motors have self-starting capability. Single-phase motors lack starting torque, so special measures are required to solve the starting problem. The torque of single-phase motors is pulsating, and the noise is relatively high, but the required power supply is simpler, making them very convenient for household use. Therefore, small household motors and instrument motors mostly use single-phase motors. A variable frequency drive (VFD) is a power transmission component that controls AC motors by applying variable frequency technology and microelectronics to change the frequency and amplitude of the motor's working power supply. Characteristics of AC motor speed control VFDs: ■ Low-frequency torque output 180% , good low-frequency operating characteristics, maximum output frequency 600Hz , capable of controlling high-speed motors, comprehensive detection and protection functions (overvoltage, undervoltage, overload), restart after instantaneous power failure, protection functions such as acceleration, deceleration, and stall prevention during operation, automatic identification function for motor dynamic parameters to ensure system stability and accuracy, fast response during high-speed stopping, rich and flexible input/output interfaces and control methods, strong universality

WEISS motor operating mode

Motor starting methods: Soft start. With the rapid development of microcomputer control technology, a batch of electronic soft start controllers has been successfully developed in relevant control engineering fields and is widely used in the motor starting process, replacing reduced-voltage starters. Current electronic soft start facilities use thyristor voltage regulation circuits. The circuit configuration is as follows: six thyristors, connected in anti-parallel pairs and then in series to the three-phase power supply. After the system sends a start signal, the microcomputer-controlled starter system immediately performs data calculations and sends trigger signals to the thyristors to control their conduction angle. Based on the given output, the output voltage is adjusted to achieve motor control. This starting method is suitable for starting control of three-phase AC asynchronous motors of various power ratings, including six-wire and three-wire connection methods. Direct start. This is the most basic and simplest motor starting method. First, a knife switch is used to connect the motor to the power grid. The motor starts and runs at rated voltage. The characteristics of this method are: low investment, simple equipment, and small quantity. Although the starting time is short, the starting torque is small and the current is large, making it more suitable for starting small-capacity motors. Reduced-voltage start. Due to the major disadvantages of direct starting, reduced-voltage starting was developed. This starting method is suitable for no-load and light-load conditions. Since reduced-voltage starting limits both starting torque and starting current, the working circuit needs to be restored to the rated state after the starting process is completed.

WEISS motor working principle

The motor evolved from corresponding rotary motors, and its working principle is similar to that of ordinary rotary motors. The magnetic poles of a linear synchronous motor can be excited by DC excitation windings or by permanent magnets, with the permanent magnet type offering higher reliability and efficiency. When symmetrical three-phase sinusoidal AC current is passed through the three-phase stator windings, the air gap traveling wave magnetic field and the permanent magnet pole magnetic field jointly generate electromagnetic thrust on the permanent magnet pole mover. If the primary is fixed, the magnetic poles move in a straight line in the direction of the traveling wave magnetic field under the action of this electromagnetic thrust, and the speed of the magnetic poles is the same as the speed of the traveling wave magnetic field. Compared to linear induction motors, linear synchronous motors have greater driving force, better control performance, and higher position accuracy. Therefore, linear synchronous motors are highly valued in drive systems for high-speed ground transportation and linear lifting devices. Various types of linear synchronous motors are the main choice for linear drives.

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