cima motor Germany cima model cima price

cima motor refers to a low-power single-phase asynchronous motor powered by a single-phase AC power supply (AC220V). This type of motor typically has two-phase windings on the stator, and the rotor is of the standard squirrel-cage type. Different distributions of the two-phase windings on the stator and different power supply conditions can produce different starting and operating characteristics.

cima motor applications

A most typical application of motors is the traction of maglev trains. Its advantages such as high speed, comfort, safety, no pollution, no noise, no vibration, and energy saving are increasingly favored by people. The primary (stator assembly) is installed on the track, making the vehicle lighter, power supply more convenient, and technology simpler. The suspension coils generate electromagnetic attraction, pulling the vehicle from below towards the track and maintaining a certain vertical distance. The magnetic force generated by the guidance coils maintains a certain lateral distance between the vehicle and the track. All of this ensures through a set of high-precision electronic adjustment systems that the vehicle remains constantly oriented and suspended at 10～15mm while moving in a straight line. The electricity for the suspension and guidance systems as well as the onboard equipment is supplied by the suspension linear generator. In the case of superconducting suspension, the vehicle can be suspended to above 100mm. Application of motors in vertical lifting systems: As modern high-rise buildings are built higher and underground mining goes deeper, the defects of traditional rope-based lifting systems become increasingly apparent, and the mechanical strength of their lifting steel ropes also has a limit range. The lifting system using permanent magnet linear synchronous motors is a ropeless lifting system, featuring characteristics such as lifting height (depth) not limited by equipment, fewer equipment units, less space occupation, simplified lifting system, improved system efficiency, reduced construction costs, and saved electrical energy. Compared with steel rope lifting systems, linear motor lifting systems have another major advantage: they can achieve high-speed lifting that the latter cannot reach, shortening the lifting cycle and improving work efficiency.

cima motor classification

Types of electric motors: 1. Classification by power supply: Based on the operating power supply, electric motors can be divided into DC motors and AC motors. Among them, AC motors are further divided into single-phase motors and three-phase motors. 2. Classification by structure and operating principle: Electric motors can be divided into DC motors, asynchronous motors, and synchronous motors based on their structure and operating principle. Synchronous motors can be further divided into permanent magnet synchronous motors, reluctance synchronous motors, and hysteresis synchronous motors. Asynchronous motors can be divided into induction motors and AC commutator motors. Induction motors are further divided into three-phase asynchronous motors, single-phase asynchronous motors, and shaded-pole asynchronous motors. AC commutator motors are further divided into single-phase series-wound motors, AC/DC universal motors, and repulsion motors. DC motors can be divided into brushless DC motors and brushed DC motors based on their structure and operating principle. Brushed DC motors can be divided into permanent magnet DC motors and electromagnetic DC motors. Electromagnetic DC motors are further divided into series-wound DC motors, shunt-wound DC motors, separately excited DC motors, and compound-wound DC motors. Permanent magnet DC motors are further divided into rare-earth permanent magnet DC motors, ferrite permanent magnet DC motors, and Alnico permanent magnet DC motors. 3. Classification by starting and running mode: Electric motors can be divided into capacitor-start single-phase asynchronous motors, capacitor-run single-phase asynchronous motors, capacitor-start-run single-phase asynchronous motors, and split-phase single-phase asynchronous motors based on their starting and running mode. 4. Classification by application: Electric motors can be divided into drive motors and control motors based on their application. Drive motors are further divided into motors for power tools (including drilling, polishing, grinding, slotting, cutting, reaming, and other tools), motors for home appliances (including washing machines, electric fans, refrigerators, air conditioners, recorders, VCRs, DVD players, vacuum cleaners, cameras, hair dryers, electric shavers, etc.), and motors for other general small mechanical equipment (including various small machine tools, small machinery, medical devices, electronic instruments, etc.). Control motors are further divided into stepper motors and servo motors. 5. Classification by rotor structure: Electric motors can be divided into squirrel-cage induction motors (referred to as squirrel-cage asynchronous motors in old standards) and wound-rotor induction motors (referred to as wound-rotor asynchronous motors in old standards) based on the rotor structure. 6. Classification by operating speed: Electric motors can be divided into high-speed motors, low-speed motors, constant-speed motors, and adjustable-speed motors based on their operating speed. Low-speed motors are further divided into geared reduction motors, electromagnetic reduction motors, torque motors, and claw-pole synchronous motors. In addition to being divided into stepped constant-speed motors, stepless constant-speed motors, stepped variable-speed motors, and stepless variable-speed motors, adjustable-speed motors can also be divided into electromagnetic adjustable-speed motors, DC adjustable-speed motors, PWM variable-frequency adjustable-speed motors, and switched reluctance adjustable-speed motors. The rotor speed of an asynchronous motor is always slightly lower than the synchronous speed of the rotating magnetic field. The rotor speed of a synchronous motor remains at the synchronous speed regardless of the load.

cima motor control methods

Motor constant voltage-to-frequency ratio control method: The constant voltage-to-frequency ratio control method for permanent magnet synchronous motors is similar to that for AC induction motors. It controls the amplitude and frequency of the motor input voltage to change simultaneously, thereby keeping the motor flux constant. The constant voltage-to-frequency ratio control method can meet the requirements of wide-range speed regulation systems. Even without feedback of physical signals such as current, voltage, or position, it can still achieve a certain control accuracy, which is the greatest advantage of the constant voltage-to-frequency ratio control method. The constant voltage-to-frequency ratio control method has simple control algorithms and low hardware costs, and has been widely used in the field of general-purpose inverters. The disadvantages of the constant voltage-to-frequency ratio control method are also obvious. Since there is no feedback of speed, position, or any other signals during the control process, it is almost impossible to obtain information about the motor's operating state, let alone precisely control the speed or electromagnetic torque. The system performance is average, and the dynamic response is poor. Especially when the target speed changes or the load changes suddenly, problems such as loss of synchronization and oscillation are prone to occur. Obviously, this control method cannot separately control torque and excitation current, and large excitation currents are likely to exist during the control process, affecting the motor's efficiency. Therefore, this control method is often used in general-purpose inverters with lower performance requirements, such as air conditioners, conveyor belt drive control in production lines, and energy-saving operation of water pumps and fans.

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