Technical Description
    The DJDK-E1 is designed for the experiments covering courses of Technology of power electronics and Electrical Drives which addresses the requirements of colleges or vocational schools. This equipment consists of basic unit, optional experimental units and a desk with metal framework. The basic unit is equipped with functional blocks, which are power supply panel, instruments and timer/alarm recorder with the functions of lab service supervision. The optional experimental units are designed to perform different experiments in accordance with the curriculum and teaching programs. The equipment is modular and can be configured to satisfy needs of individual requirements and further extension. The experiments provided have covered curriculum at different academic levels in this subject. Each unit is fully enclosed and with mimic diagrams on front panel to simplify the experimental connections. Versatile choice of load is possible, which are DC generator, Dynamometer and magnetic powder breaker. Safety has been paramount during the development of this equipment and every effort has been made to protect both the user and instruments.
Specification
    • Power supply: 3-phase 380V±10％ 50Hz    
    • Environment temperature: -10℃~＋40℃
    • Power capacity: <1.5kVA      
    • Dimensions: 187.3×72.5×162.2 cm
Experiments
    Power electronics technology
      • Unijunction transistor firing circuit
      • Sine wave synchronous phase-shift firing circuit
      • Saw-tooth wave synchronous phase-shift firing circuit
      • Siemens TCA785
      • Single-phase half wave controlled rectification 
      • Single-phase half-controlled rectification bridge
      •Single-phase full-controlled rectification/inversion bridge
      • 3-phase half wave controlled rectification
      • 3-phase half-controlled rectification bridge
      • 3-phase half wave active inversion
      • 3-phase full-controlled rectification/ Inversion Bridge
      • Single-phase AC voltage control
      • Single-phase AC power control
      • 3-phase AC voltage control
      • DC chopper circuits
      • Thyristor（SCR）characteristics
      • Gate-Turn-off  Thyristor（GTO）characteristics
      • Power MOSFET characteristics
      • Giant transistor（GTR） characteristics
      • Insulated-gate bipolar transistor（IGBT）characteristics
      • Drive & protection circuits for GTO
      • Drive & protection circuits for the Power MOSFET
      • Drive & protection circuits for GTR
      • Drive & protection circuits for IGBT
    Power electronics circuits
      • Single-phase sine wave pulse width modulation（SPWM）controlled inverter
      • Full-bridge DC/DC converter
      • Half-bridge switching mode power supply
      • Fly-back switching mode power supply
      •Current-control separate-excited switching mode power supply
      • Buck, Boost, Boost-buck, Cuk, Sepic and Zeta chopper
      • Step-up/down & compound chopper
      • Single-phase AC voltage PWM control
      • Active power factor correction
      • Phase-shift Zero-voltage Switching H Bridge
    DC motor control
      • Parameters and characteristics test of the Thyristor-controlled DC motor drive system
      • Tuning of the control blocks in Thyristor-controlled DC motor drive system
      • Non-reversible DC motor drive system with speed/current/voltage feedback
      • Non-reversible DC motor drive system with speed and current feedback
      • Reversible Thyristor-controlled DC motor drive system with non-circulating current by logic-selected firing
      • Reversible Thyristor-controlled DC motor drive system with non-circulating current by delayed firing
      •Reversible DC motor drive system with PWM-controlled H Bridge and current, speed feedback
      •Advanced Thyristor-controlled DC motor drive system (including: voltage/current/speed feedback; speed and current feedback; with non-circulating current by logic-selected firing; with non-circulating current by delayed firing.
    Frequency converter control principles
      • 3-phase sine wave pulse width modulation（SPWM）
      • 3-phase triples injection PWM (TIPWM)
      • 3-phase space voltage vector PWM (SVPWM)
      • V/F curve measurement in SPWM mode
      • V/F curve measurement in triples injection PWM mode
      • V/F curve measurement in SVPWM mode
      • Flux loci observation in different PWM modes
    AC motor control
      • Voltage control of 3-phase asynchronous motor with current and speed feedback
      • Cascade control of 3-phase asynchronous motor with current and speed feedback
      • Digital voltage/cascade control of 3-phase asynchronous motor
      • Single-phase frequency-supplied (SPWM) AC motor drive system
      • 3-phase frequency-supplied (SPWM) AC motor drive system with PC/PLC interface
      • 3-phase frequency-supplied (TIPWM) AC motor drive system with PC/PLC interface
      • 3-phase frequency-supplied (SVPWM) AC motor drive system with PC/PLC interface
    Advanced AC motor control
      • DSP based field-oriented control (FOC)
      • DSP based direct torque control（DTC）
      • DSP based DC brushless motor drive system 
      -- DC brushless motor control principle
      -- DC brushless motor control with current and speed feedback
      -- Tuning of current/speed controller for DC brushless motor drive system
    Control theory
      • Simulation of typical blocks in control systems
      • Time domain response & parameters measurement of the first-order system
      • Transient response analysis of the second-order system
      • Transient response & stability analysis of the third-order system
      • Dynamic performance of the PID controller
      • Dynamic compensation of the control system
      • Frequency characteristics of typical blocks
      • Frequency characteristics of the linear system
      • Signal Sampling and restoring
      • Simulation of the typical nonlinear blocks
      • Phase-plane analysis of nonlinear system