A coaxial-output rolled strip pulse forming line based on multi-layer films

A coaxial-output rolled strip pulse-forming line (RSPFL) with a dry structure is researched for the purpose of miniaturization and all-solid state of pulse-forming lines (PFL). The coaxial-output RSPFL consists of a coaxial-output electrode (COE) and a rolled strip line (RSL). The COE is characterized by quasi-coaxial structure, making the output pulse propagate along the axial direction with a small output inductance. The RSL is rolled on the COE, whose transmission characteristics are analyzed theoretically. It shows that the RSL can be regarded as a planar strip line when the rolling radius of the strip line is larger than 60 times of the thickness of the insulation dielectric layer of RSL. CST modeling was carried out to simulate the discharging characteristic of the coaxial-output RSPFL. It shows that the coaxial-output RSPFL can deliver a discharging pulse with a rise time <6 ns when the impedance of the RSL matches that of the COE, which confirms the theoretical analysis. A prototype of the coaxial-output RSPFL was developed. A 49-kV discharging pulse on a matched load was achieved when it was charged to 100 kV. The discharging waveform has a pulse width of 32 ns, with a rise time of 6 ns, which is consistent with the simulation waveform. An energy-storage density of 1.9 J/L was realized in the coaxial-output RSPFL. By the method of multi-stage connection in series, a much higher output voltage is convenient to be obtained.

A Simulator for Power Battery Characteristics Based on Bi-Directional DC/DC Converter

In this paper a design scheme is introduced about the simulation of Li-ion power battery discharging characteristics based on the architecture DSP + IPM module. It is described the building of Li-ion power battery circuit model, and the obtaining of the characteristic parameters of Li-ion battery. The discharging characteristic is implemented on bi-directional DC/DC converting circuit. The design of hardware and software is introduced and the experiment result is given.

Phase Plane Analysis of Battery Series Balancing on Robot

The energy in rechargeable batteries of robots was restricted by its capacity and chemistry combination. Since the energy was limited, the way to manage batteries charging/discharging characteristic and how it applies on robots load become crucial to prolong robots working hours and life. Phase Plane Analysis of Battery Series Balancing on Robot is proposed by switching super capacitor according voltage and current in need for batteries with matrix connection. To take servo motors frequently load shock characteristic in concern, the proposed structure able to absorb and release power instantly since the characteristic of super capacitor has a better performance than Lithium batteries.

Research on Integrated System Control Strategy of Regenerative Braking and Anti-Lock Braking System for Electric Vehicle

Based on ABS System,a regenerative and pneumatic baking system was proposed,which can adjust pneumatic braking force precisely through ABS valve in order to guarantee the distribution of braking force. A control strategy using logic threshold was made,considering ECE regulation,control logic of ABS system,braking torque of motor and charging-discharging characteristic of battery. A co-simulation model was built with the platform of Simulink-AMESim and the simulation was performed under different braking intensity and driving cycles. The results indicate that the vehicle can achieve good braking regeneration effect with ensuring braking stability .Ratio of energy recycling can achieve 16.26% in London bus driving cycles.