Phytron motor Germany Phytron model Phytron price

Phytron motors are named for their armature winding and field winding connected in series. Single-phase series-wound motors are AC/DC universal motors; they can operate on either AC or DC power supplies. Single-phase series-wound motors are widely used. Their advantages include high speed, high starting torque, compact size, light weight, resistance to stalling, and a wide applicable voltage range. Speed control can be achieved simply and easily by voltage adjustment.

Phytron motor operating mode

Motor starting methods: Soft start. With the rapid development of microcomputer control technology, a range of electronic soft-start controllers have been successfully developed in relevant control engineering fields and are widely applied in motor starting processes, replacing reduced-voltage starters. Current electronic soft-start devices use thyristor voltage-regulating circuits, configured as follows: six thyristors, connected in anti-parallel pairs and then in series with the three-phase power supply. Upon receiving a start signal from the system, the microcomputer-controlled starter immediately performs data calculations and sends trigger signals to the thyristors. This controls the conduction angle of the thyristors, adjusting the output voltage according to the given setpoint to achieve motor control. This starting method is suitable for starting control of three-phase AC asynchronous motors of various power ratings, including those with six-wire and three-wire connections. Direct start: This is the most basic and simplest motor starting method. The motor is first connected to the grid using a knife switch. The motor starts and runs at rated voltage. Characteristics of this method include low investment, simple equipment, and fewer components. Although the starting time is short, the starting torque is low and the current is high, making it more suitable for starting small-capacity motors. Reduced-voltage start: Due to the significant 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 circuit must be restored to its rated state after the starting process is complete.

Phytron motor applications

The motor stator generates a stationary magnetic field. This stationary magnetic field surrounds the armature (or rotor). An external power supply excites the armature magnetic field. DC brushed motors also have two arc-shaped copper segments on the motor shaft, called commutator segments. As the motor rotates, carbon brushes slide on the commutator. This generates a rotating magnetic field that interacts with the stator's stationary magnetic field. The current in the armature and stator windings is supplied by a battery or other DC power source (permanent magnet DC brushed motors do not have stator windings). The battery (or DC power supply) provides a constant DC voltage. The voltage amplitude determines the motor speed, so the battery or DC power supply is a linear excitation source. The most effective way to change the speed of a DC brushed motor is to use pulse width modulation (pwm) technology. pwm technology switches a constant voltage source at a fixed frequency. Changing the pulse width of the pwm signal adjusts the motor speed. The ratio between the high and low levels of the pulse is called the duty cycle of the pwm signal. The DC battery level amplitude equals the average amplitude of the pwm signal. DC brushed motors offer good starting and speed control performance and are often used in applications with high requirements for starting and speed control, such as large reversible steel rolling mills, mine hoists, high-speed hotel elevators, gantry planers, electric locomotives, internal combustion locomotives, city trams, subway trains, electric bicycles, papermaking and printing machinery, marine machinery, large precision machine tools, and large cranes.

Phytron motor control principle

Motor control principle: To make the motor rotate, the control unit must first determine the rotor position sensed by the hall-sensor. It then decides the sequence for turning on (or off) the power transistors in the inverter (inverter). These include AH, BH, CH (known as upper-arm power transistors) and AL, BL, CL (known as lower-arm power transistors) in the inverter. This causes current to flow through the motor coils in sequence, generating a forward (or reverse) rotating magnetic field that interacts with the rotor magnets, causing the motor to rotate clockwise or counterclockwise. When the motor rotor rotates to a position where the hall-sensor senses another set of signals, the control unit activates the next group of power transistors. This cycle allows the motor to continue rotating in the same direction until the control unit decides to stop the rotor by turning off the power transistors (or only turning on the lower-arm power transistors). To reverse the rotor, the power transistor activation sequence is reversed. Basically, the power transistor switching sequence can be exemplified as follows: AH and BL pair → AH and CL pair → BH and CL pair → BH and AL pair → CH and AL pair → CH and BL pair. However, AH and AL, BH and BL, or CH and CL must never be turned on simultaneously. Additionally, because electronic components have switching response times, these response times must be considered during the transition between turning off and on. Otherwise, if the lower arm (or upper arm) turns on before the upper arm (or lower arm) has completely turned off, it will cause a short circuit between the upper and lower arms, burning out the power transistors.

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