ZAE motor Germany ZAE model ZAE price

ZAE 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 micro special motor that converts electrical pulse signals into angular displacement to control rotor rotation. It serves as an actuator in automatic control devices. For each input pulse signal, 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 devices such as printers, plotters, and disk drives. The drive power supply for stepper motors 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".

ZAE motor classification

The motor has similar teeth and slots distributed according to a certain rule on the inner and outer surfaces of the stator and rotor cores. It utilizes the change in magnetic circuit reluctance caused by the relative position change of the stator and rotor core teeth and slots to generate torque. The rotor core is made of silicon steel sheets or soft magnetic materials. When a certain phase of the stator is excited, the rotor turns to the position where the magnetic circuit reluctance is minimal. When another phase is excited, the rotor turns to another position where the magnetic circuit reluctance is minimal, and the motor stops rotating. At this point, the rotor has turned through a step angle θb, where N is the number of operating beats for the rotor to turn through one tooth pitch; ZR is the number of rotor teeth. There are many structural forms of reluctance stepper motors. The stator core can be single-segment or multi-segment; the magnetic circuit can be radial or axial; the winding phases can be three-phase, four-phase, or five-phase. The step angle of reluctance stepper motors can be achieved at 1° to 15°, or even smaller. Precision is easy to ensure, and the starting and operating frequencies are high, but power consumption is large and efficiency is low. Hybrid stepper motor. Its stator and rotor core structures are similar to those of reluctance stepper motors. The rotor has permanent magnets that generate a unipolar magnetic field in the air gap, which is modulated by the teeth and slots of the soft magnetic material on the rotor. Hybrid stepper motors combine the advantages of both permanent magnet stepper motors and reluctance stepper motors. They have small step angles, high precision, high operating frequency, low power consumption, and high efficiency.

ZAE motor advantages

Advantages of the motor: 1. Low losses and low temperature rise. Since the magnetic field of a permanent magnet synchronous motor is generated by permanent magnets, excitation losses (i.e., copper losses) caused by generating the magnetic field through excitation current are avoided. There is no current in the rotor during operation, which significantly reduces the motor temperature rise; under the same load conditions, the temperature rise is more than 20K lower. 2. High power factor. The power factor of a permanent magnet synchronous motor is high and independent of the number of motor poles. At full load, the power factor approaches 1. Compared with asynchronous motors, this results in lower motor current, correspondingly lower stator copper losses, and higher efficiency. In contrast, the power factor of asynchronous motors decreases as the number of poles increases. Furthermore, due to the high power factor of permanent magnet synchronous motors, the capacity of the associated power supply (transformer) can theoretically be reduced, and the specifications of associated switchgear and cables can also be lowered. 3. High efficiency. Compared with asynchronous motors, permanent magnet synchronous motors have much higher efficiency values under light load. They have a wide high-efficiency operating range, with efficiency greater than 90% in the 25% to 120% range. The rated efficiency of permanent magnet synchronous motors can meet the 1 energy efficiency level requirements of the current national standard, which is their greatest advantage in energy saving compared to asynchronous motors. In actual operation, motors rarely run at full power when driving loads. This is because, on one hand, designers generally determine motor power based on the extreme operating conditions of the load, but such extreme conditions occur infrequently. Additionally, to prevent motor burnout under abnormal conditions, further power margin is provided during design. On the other hand, to ensure motor reliability, manufacturers usually provide additional power margin beyond the user's required power. As a result, most motors in actual operation work below 70% of their rated power, especially when driving fan or pump loads, where motors typically operate in the light load region. For asynchronous motors, light-load efficiency is very low, whereas permanent magnet synchronous motors maintain high efficiency even in the light load region. 4. Other advantages. Permanent magnet synchronous motors also offer high starting torque, short starting time, and high overload capability. The installed capacity of equipment drive motors can be reduced based on actual shaft power, saving energy and reducing fixed asset investment. Permanent magnet synchronous motors are easy to control, with constant speed that does not vary with load or voltage fluctuations but depends only on frequency, ensuring smooth and reliable operation. Due to strict speed synchronization and good dynamic response, they are suitable for variable frequency control. The installation dimensions of permanent magnet synchronous motors comply with IEC standards, allowing direct replacement of three-phase asynchronous motors. The protection rating can achieve IP54 and IP55, and some manufacturers also produce explosion-proof permanent magnet synchronous motors.

ZAE motor control methods

Motor vector control technology: Vector control technology emerged in the early 70s. The vector control system for permanent magnet synchronous motors references the control strategy of DC motors. It uses coordinate transformation to decompose the collected three-phase stator currents and flux linkages of the motor into two components along the direction of the rotor flux linkage vector: one along the rotor flux linkage direction, called the direct-axis excitation current; the other orthogonal to the rotor flux linkage direction, called the quadrature-axis torque current. By adjusting the excitation current and torque current according to different control objectives, precise control of speed and torque is achieved, allowing the control system to obtain good steady-state and dynamic response characteristics. According to different control objectives, permanent magnet synchronous motor vector control algorithms can be divided into the following types: id=0 control, maximum torque per ampere control, field weakening control, etc. These performance indicators can all be achieved through independent control of the direct-axis excitation current and the quadrature-axis torque current.

Weidou Intelligent Technology professionally sells German ZAE motors, ZAE motors, ZAE drives, ZAE synchronous motors, ZAE servo motors, ZAE DC motors, ZAE AC motors, ZAE stepper motors, ZAE synchronous motors, ZAE asynchronous motors, ZAE single-phase motors, ZAE three-phase motors, ZAE drive motors, ZAE geared motors, ZAE electric motors, ZAE original German imports. Welcome customers to inquire and order.