PARTNER SHIP motor, German PARTNER SHIP model, PARTNER SHIP price

The PARTNER SHIP 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 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 printers, plotters, and disk drives. The drive power supply for 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, ease of 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 include lower efficiency, significant heat generation, and occasional "step loss".

PARTNER SHIP motor working principle

The motor control system mainly consists of a permanent magnet brushless DC motor, DC voltage source, inverter, position sensor, and controller, adopting a "three-phase six-step 120° square wave" drive. The permanent magnet brushless DC motor operates by turning the inverter power transistors on and off according to a specific pattern, generating a magnetic potential in the motor stator armature that advances continuously by 60° electrical degrees, thereby driving the motor rotor to rotate. Under ideal conditions, for the back EMF and current of each armature phase, each power transistor conducts for 120° electrical degrees, with a phase difference of 60° electrical degrees. When power transistors V3 and V4 are conducting, the motor's V and -U phases are connected (current flowing into the winding is defined as positive direction). The resultant stator armature magnetic potential is Fa5 as shown in Figure 1; if power transistor V3 turns off and power transistor V5 turns on, the motor's W phase and -U phase are energized, and the resultant armature magnetic potential becomes Fa5. Fa5 has advanced clockwise by 60° electrical degrees compared to Fa4. Thus, the magnetic potential generated by the stator armature rotates continuously clockwise by 60° electrical degrees as the power transistors switch on and off in a regular pattern. There are six commutation combination states for the inverter power transistors. Each commutation state must correspond to a specific rotor position or induced EMF waveform to produce the maximum average electromagnetic torque. The interaction force is greatest when the angle between the two magnetic potential vectors is 90°. Since the magnetic potential generated by the electronic armature advances by 60° electrical degrees, the angle between the rotor magnetic potential and the stator magnetic potential must vary within the range of 60° to 120° in each commutation mode to produce the maximum average electromagnetic torque. As shown in Figure 1, suppose at time t1, the rotor's Fj is in the plane of coils U and X, causing the rotor to rotate clockwise. At this point, power transistors V5 and V4 should be turned on, making the angle between the stator's resultant magnetic potential Fa5 and Fj equal to 120°. The rotor rotates clockwise under the electromagnetic torque generated by the interaction between Fa5 and Fj. At time t3, the angle between Fa5 and Fj becomes 60°. At this point, power transistor V4 is turned off, and power transistor V6 is turned on. The stator's resultant magnetic potential becomes Fa6, forming an angle of 120° with Fj. The electromagnetic torque generated by both further rotates the rotor. Based on steady-state model scalar control, the initial operation mode of AC motors was uncontrolled. Control functions were limited to switching on and off, and in some cases, auxiliary starting, braking, and reversing. To meet certain variable-speed drive needs, controls with poorer performance were developed, such as voltage reduction speed control for squirrel-cage asynchronous motors, rotor resistance insertion speed control for wound-rotor asynchronous motors, electromagnetic slip clutch speed control, cascade speed control for wound-rotor asynchronous motors, variable voltage variable frequency (VVVF) speed control for squirrel-cage asynchronous motors, pole-changing speed control, and variable voltage variable frequency speed control for synchronous motors. Among these speed control methods, except for variable voltage variable frequency control, most are open-loop controls that do not require inverters. They feature simple equipment but suffer from low efficiency and poor performance. Slip frequency closed-loop control based on constant voltage-to-frequency ratio for squirrel-cage asynchronous motors offers relatively better performance. However, since they are all based on steady-state models, their dynamic performance is poor. They are generally used only for energy-saving speed control and general speed control applications with low dynamic performance requirements, such as water pumps and fans. Vector control theory has advanced AC motor control from external macroscopic steady-state control to transient control of the internal electromagnetic processes of the motor. This has led to a qualitative leap in the control performance of permanent magnet synchronous motors. The most essential feature of vector control is the transformation of complex, coupled, nonlinear variables inside the AC motor into DC variables (such as current, flux linkage, voltage, etc.) in a stationary reference frame through coordinate transformation. Constraints are identified to obtain the optimal control strategy for a specific objective.

PARTNER SHIP motor applications

The most widely used motors are AC asynchronous motors (also known as induction motors). They are easy to use, reliable, inexpensive, and robust in structure, but have a low power factor and difficult speed regulation. Synchronous motors are commonly used for high-capacity, low-speed prime movers. Synchronous motors not only have a high power factor, but their speed is independent of load size and determined solely by the grid frequency, offering stable operation. DC motors are often used in applications requiring wide-range speed regulation. However, they have commutators, complex structures, high costs, difficult maintenance, and are unsuitable for harsh environments. After the 20s and 70s, with the development of power electronics, AC motor speed control technology matured, equipment prices decreased, and applications began to expand. The rated power of a motor is the maximum output mechanical power it can handle under specified duty cycles (continuous, short-time, intermittent periodic) without overheating. Users must heed the ratings on the nameplate. During operation, ensure the load characteristics match the motor characteristics to avoid overspeeding or stalling. Motors provide a wide power range, from milliwatts to tens of megawatts. Motor use and control are very convenient, featuring self-starting, acceleration, braking, reversing, and holding capabilities to meet various operational requirements. Motors have high efficiency, produce no smoke or odor, do not pollute the environment, and generate low noise. Due to these advantages, they are widely used in industrial and agricultural production, transportation, national defense, commerce, household appliances, and medical electrical equipment. Generally, during motor speed regulation, the output power varies with speed.

PARTNER SHIP motor performance

Common lubrication methods for motor spindle bearings include grease lubrication, oil mist lubrication, oil-air lubrication, jet lubrication, and under-ring lubrication. Grease lubrication requires no additional equipment and is widely used for low-speed spindles. Oil mist lubrication atomizes lubricating oil (such as turbine oil) with compressed air to lubricate the bearings. This method is easy to implement and uses simple equipment. The oil mist provides both lubrication and cooling. However, oil mist is difficult to recover and causes serious environmental pollution, so it is gradually being replaced by the newer oil-air lubrication method. Oil-air lubrication delivers a small amount of lubricating oil directly, without atomization, via compressed air at regular intervals and quantities along specialized oil-air pipes to the bearing lubrication zone. The lubricating oil provides lubrication, while the compressed air pushes the oil and cools the bearing. The oil and air remain separated, facilitating oil recovery and preventing environmental pollution. When implementing oil-air lubrication, each bearing generally requires a separate oil-air nozzle, with strict requirements for the injection location to ensure effective lubrication. The effectiveness of oil-air lubrication is also influenced by compressed air flow and oil-air pressure. Generally, increasing air flow improves cooling, while increasing oil-air pressure not only improves cooling but also helps the lubricating oil reach the lubrication zone, thus helping to increase bearing speed. Experiments show that increasing pressure can increase bearing speed by 20% compared to conventional pressure oil-air lubrication. Jet lubrication directly uses high-pressure lubricating oil to lubricate and cool the bearings, resulting in high power consumption and high costs.

Weidou Intelligent Technology specializes in selling German PARTNER SHIP motors, PARTNER SHIP motors, PARTNER SHIP drives, PARTNER SHIP synchronous motors, PARTNER SHIP servo motors, PARTNER SHIP DC motors, PARTNER SHIP AC motors, PARTNER SHIP stepper motors, PARTNER SHIP synchronous motors, PARTNER SHIP asynchronous motors, PARTNER SHIP single-phase motors, PARTNER SHIP three-phase motors, PARTNER SHIP drive motors, PARTNER SHIP geared motors, PARTNER SHIP electric motors. PARTNER SHIP products are original imports from Germany. Customers are welcome to inquire and order.