Bi-Directional DC Power Supply Support Full Scale Power Feedback

Product DescriptionProduct introduction1.1 Product descriptionXYH series high-precision bidirectional DC power supply is a bidirectional charging and discharging device. It adopts two-stage conversion structure, IGBT type DC power supply with high precision, high reliability, programmable and automatic operation. The DC output characteristics have high precision and high dynamic response characteristics, and automatic bidirectional operation function. It adopts full digital control, high control accuracy, fast response speed and wide output regulation range. The output has programmable function, which can be applied to a variety of occasions through different control.The main advantage of XYH series power supply is that it can simulate the power battery to simulate the input power, output current, overload capacity, withstand voltage, motor efficiency, locked rotor current, maximum speed, overspeed, feed and other performance of electric vehicle motor controller. The back EMF energy in the overspeed experiment can be fed back to the power grid in real time to effectively protect the controller from damage.1.2 Product application1        Electric vehicle drive motor (controller);2        Electric vehicle transmission system, powertrain system integration;3        Ship electric drive, electric drive system test;4        Motor system test;5        Test of electric vehicle bidirectional charger;6        Charge and discharge test of battery pack and battery pack;7        Capacitor and super capacitor charge and discharge test;8        UPS EPS system test;9        DC panel system test;10      PCs (energy storage inverter)1.3 Product featuresBuilt in AC isolation transformer + LC AC / DC filter, input and output electrical isolation; AC circuit breaker has leakage current protection function to effectively prevent electrical safety accidents;Infineon high voltage IGBT module, two-stage conversion, IGBT circuit, pure digital power frequency isolation power supplyEnergy can be fed back to the power grid: it has the characteristics of power supply and load at the same time. In addition to the performance of high-power DC power supply, it can realize the load function of energy automatic feedback to the power grid, and has the outstanding advantages of energy saving, consumption reduction and green environmental protection;;The DCDC side adopts carrier phase-shifting circuit to make the DC output side more accurate and less ripple;It can realize the characteristics of wide output voltage range, high precision and fast dynamic response;The principle of PWM rectification + PWM inverter is adopted, and the power factor is ≥ 0.99; THD and injected harmonic current meet the national standard GB / T14549-93;The output has constant voltage, constant voltage current limiting, constant current, constant power and constant resistance modes;The DC support capacitor adopts high-voltage film capacitor, which has reliable performance and long service life;The DC output side adopts high-voltage DC fuse, which can effectively carry out short-circuit protection;The main control part of the power supply adopts all digital control circuit, and the main control chip is ti's DSP chip; Touch screen display;High dynamic characteristics; 10% ~ 90% sudden load output voltage response time ≤ 5ms- 90% ~ 90% switching ≤ 10ms;With power battery simulation function, the internal resistance of the simulated battery can be freely determined according to the user's operating conditions.1.4 Realize functionNo.item1General test itemsDC resistance of stator winding of drive motorOverspeed testOperating voltage range2Torque -speed -efficiency curveTorque - Speed curve (universal curve)Motor controller speed - Efficiency universal curveDrive motor efficiencyDrive motor system efficiency3Measurement of key characteristic parametersContinuous torqueContinuous powerPeak torquepeak powerMaximum operating speedEfficient workspaceMaximum efficiency4control accuracySpeed control accuracy testTorque control accuracy test5ResponseSpeed response timeTorque response time6Operating current of drive motor controllerContinuous operating currentShort time operating currentMax operating current7Continuous feed characteristics8Controller protection function test9Reliability test(GB/T 29307-2012)10Short time voltage rise test11Locked rotor torque and locked rotor current test12Motor temperature rise test13Load test14Energy feedback test15Road simulation test (climbing, acceleration, rolling resistance, etc.)16Contact current test17Simulation test of ramp starting, uphill and downhill taxiing18Steady state cyclic loading durability test19Other simulation tests (such as acceleration, braking, parking, etc.) or custom working conditions2 Principle and system applicationXYH series power supply adopts two-stage structure, in which the front stage is PWM bidirectional ACDC rectifier / inverter circuit and the rear stage is buck-boost bidirectional DCDC carrier phase shift circui