VALPES motor Germany VALPES model VALPES price

VALPES motor is a rotating motor containing a brush assembly that converts DC electrical energy into mechanical energy (DC motor) or converts mechanical energy into DC electrical energy (DC generator). Unlike brushless DC motors, the brush assembly is used to introduce or extract DC voltage and DC current. Brushed DC motors are the foundation of all motors; they feature fast starting, timely braking, smooth speed regulation over a wide range, and relatively simple control circuits.

VALPES motor advantages

What are the advantages of this motor compared to other motors? 1. Precision: Achieves closed-loop control of position, speed, and torque; overcomes the step loss problem of stepper motors; 2. Speed: Good high-speed performance, with general rated speeds reaching 2000 to 3000 rpm; 3. Adaptability: Strong overload resistance, capable of withstanding loads three times the rated torque, making it particularly suitable for applications with instantaneous load fluctuations and requirements for rapid starting; 4. Stability: Smooth operation at low speeds, without the stepping phenomenon similar to stepper motors during low-speed operation. Suitable for applications requiring high-speed response; 5. Responsiveness: Short dynamic response time for acceleration and deceleration, generally within tens of milliseconds; 6. Comfort: Significantly reduced heat generation and noise. Simply put: ordinary motors seen in daily use continue to rotate for a while due to inertia after power is cut off, then stop. In contrast, servo motors and stepper motors stop and start immediately, with extremely fast response. However, stepper motors suffer from step loss. The application fields of servo motors are extensive. Generally, any application requiring a power source and precision may involve servo motors, such as machine tools, printing equipment, packaging equipment, textile equipment, laser processing equipment, robots, and automated production lines, which have relatively high requirements for process precision, machining efficiency, and operational reliability.

VALPES motor braking methods

The motor is an AC motor with brushes and a commutator. Some series-wound motors can be powered by either AC or DC and are called universal motors. They are named for their field windings and armature windings connected in series. The structure of a single-phase series-wound motor is very similar to that of a DC series-wound motor. The main difference is that the stator core of a single-phase series-wound motor must be laminated from silicon steel sheets, whereas the poles of a DC motor can be either laminated or made as a solid structure. The principle by which a single-phase AC series-wound motor generates rotating torque is similar to that of a DC series-wound motor and can be explained using the operating principles of DC motors. The stator winding and armature winding of a single-phase series-wound motor are connected in series. The direction of rotation of a series-wound motor depends on the direction of electromagnetic torque and current. Therefore, when operating on an AC power supply, as the polarity alternates, the polarity of the stator magnetic field and the direction of the rotor current (or the magnetic field it produces) change simultaneously. According to the left-hand rule, the direction of the electromagnetic force does not change, so the series-wound motor maintains a constant direction of rotation. When powered in the forward direction, the electromagnetic torque is counter-clockwise. If the positive and negative poles of the power supply are swapped, both the excitation flux and the armature current direction change simultaneously, but the electromagnetic torque direction remains counter-clockwise. Thus, the motor's direction of rotation does not change; that is, the electromagnetic torque and rotation direction of a single-phase AC series-wound motor do not vary with changes in power supply polarity.

VALPES motor working principle

The simplified structural diagram of the motor relay consists of an electromagnet mechanism and a contact assembly. The coil is connected to the ignition switch terminal on the housing and the ground terminal "E". The fixed contact is connected to the starter motor terminal "S", and the movable contact is connected to the battery terminal "BAT" via the contact arm and bracket. The starter relay contacts are normally open. When the coil is energized, the relay core generates electromagnetic force, closing the contacts and thereby connecting the circuits for the pull-in coil and hold-in coil controlled by the relay. The control circuit includes the starter relay control circuit and the starter motor solenoid switch control circuit. The starter relay control circuit is controlled by the ignition switch, with the relay coil circuit as the controlled object. When the ignition switch is turned to the start position, current flows from the positive terminal of the battery through the starter motor power terminal to the ammeter, then from the ammeter through the ignition switch and relay coil back to the negative terminal of the battery. Consequently, the relay core generates strong electromagnetic attraction, closing the relay contacts and connecting the control circuit for the starter motor solenoid switch. Battery positive terminal → Starter motor power terminal → Solenoid switch → Field winding → Armature winding → Ground → Battery negative terminal. Thus, the starter motor generates electromagnetic torque to start the engine.

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