AC Motor Speed Control using TRIAC (VPL-ACM) is used to
- Study of starting of Single Phase Induction Motor
- Control speed of Single Phase Induction Motor
- Study Speed torque characteristics of Single Phase Induction Moto
The BLDC motor uses the quadrature encoder for rotor position sensing. The quadrature encoder output consists of three signals. Two phases, A and B, represent the rotor position, and an index pulse defines the zero position.
Brushless DC motors typically use trapezoidal control, but field-oriented control is used as well. PMSM motors typically use field-oriented control only. Trapezoidal BLDC motor control is a simpler technique than field-oriented control; it energizes only two phases at a time. Only one PID controller is required for torque control, and as opposed to field-oriented control, there is no need for coordinate transformations using Park and Clarke transforms.
BLDC motors are commonly used in these E-bikes. The best part is that these BLDC motors have hall sensors built-in. The Hall effect sensors, which are used to detect the rotors position, can also be used to determine speed by measuring the time it takes for the sensors to switch.
The BLDC Motor is Popularly known as a scooter motor or general application motor. It is extremely durable and reliable. It's Commonly found in 48/60V scooters and It's also been a proven motor in robotics.
DC Motor Speed Control (VPL-DCM) is used to
- Obtain speed-torque characteristics and efficiency of a dc shunt motor by direct loading.
- Obtain efficiency of a dc shunt machine by no load test.
This set up is designed to study the measurement procedure of Sequence impedence (Positive, Negative, Zero), and Practical measurement & theoretical calculation of fault current by simulating various types of faults (LG, LLG, LLLG etc.) under low field voltage. This set up consists of:
- Alternator with prime mover set up
- Control Panel with Fault simulation facility
The devices used in electrical control system are DC servo motors. DC servo motor has been the prime element most widely used in control applications. In position control the DC servo motor is of the highest choice to simple control circuitry. These motors suffers from wear and tear because of brush and commutator. The DC servo motor can be controlled by either field flux or by armature control. But variable flux motor suffer from costlier current source for armature and slightly poor control of field flux due to magnetization saturation for low speed application.
Solar Power Generation Trainer VPL-PVT-PGT3K can be used as solar training system and also for power generation. This Training system control panel has built in DC voltmeters, DC ammeters, AC multi-function meter (for AC current, voltage, power, frequency). It has control panel built in protection circuit for battery & solar panel.
To study that the speed of the SRM motor can be varied using SCR/IGBT Circuit. The firing circuit is based on Ramp - comparator method. Isolation is provided by pulse Transformer.
SRM (Switched Reluctance Motor) is high demands of a rare-earth-free motor. The SRM have neither a permanent magnet nor a second winding in the rotor. It has simple structure, rotor robustness, high efficiency and large torque output. SRM is much suitable for the industrial applications.
SRM takes both AC/DC advantages with very wide speed range, to be next new generation infinitive speed adjustment system.
Wind Energy Training System (VPL-WET) can be used as Wind Energy Training System and also for small power generation. Wind speed can be controlled externally. The Turbine can be replaced. The System can be expanded to develop a hybrid system. Performance can be evaluated from low wind speed to high wind speed
The Solar Photovoltaic Power Training Kit is used to measure intensity of Direct Solar Radiation with the help of Lux Meter or Sunshine Recorder with Table.
- Solar Photovoltaic Training Kit for Lab experiments
- PV Module Stand: 2nos.
- Each unit comprises of a PV module of 37 Wp and halogen Lamp of 1000 Watt