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It is the reduction of the control magnetic confinement fusion energy DC is a fast high-current power supply, the technical requirements: response time of 1 ms 50V peak voltage, maximum current of 20 kA, the achievement of the four quadrants. This requirement must necessarily reduce the energy consumption in parallel tubes in parallel with the technology and the HP Pavilion DV6 batteries power supply, or in parallel.
Parallel continuous current is 20 kA, with IGBT-tube, each arm of the bridge at least 15 tubes in parallel, because they are fighting not only by the driver, and generally a higher current carrying capacity of the power of the tubes is Also important, the actual voltage of 50V, in the case, the ability to supply voltage tubes a great loss. Therefore, the proposal to use the structure of power DC / DC ruled in parallel with the technical ideas.
Parallel system of power fundamental requirements:
1) Enter the disruption or alteration of concern for the stability of output voltage;
2) The FM module. Otherwise, the result of the pulse signal output of the low frequency components, increasing the ripple current transformers and voltage;
3) control the flow of each module to share the load current.
High-Power DC-topology
DC / DC topology there are two parallel bus structure uses the DC input, the system including a transformer, rectifier diodes and uncontrolled rectifier circuit, N path DC / DC circuit pump blood oppression, the 'Another is using a parallel system architecture independent AC-DC/DC-energie .
With the topology, the system does not need large capacity of the transformer rectifier DC setting can be used, in general, pass through the rectifier diodes and filter capacitors. Although this structure can be connected in parallel to ensure that each office in order to avoid a separate input HP Pavilion DV4 battery voltage to an imbalance in parallel with the branch input voltage more, but the current ability to maintain performance up to 20 kA, DC overload, pre-AC-DC devices are higher, not easy to achieve. In addition, access to the common bus is not sufficient to reach the full significance of the independent power modules in parallel. Therefore, as shown in Figure 1b AC-DC/DC current use of the parallel topology.
Topology shown in Figure 1b, the independence of each power module to ensure AC-DC/DC shown, the DC are executed in parallel, depending on the actual voltage, current needs and to increase the power of freedom and reduce the number modules! In practice, there is not enough space, have a value for the search. However, this topology has two faces! If the output voltage of the transformer, which is different, each rectifier output voltage is different, so that the significant imbalance rectifier output.
But to eliminate this imbalance, the following first steps, in parallel with a separate SONY VGP-BPS13 batteries power supply AC-DC/DC, you should try to complete each module AC-DC/DC output voltage of the second equality, another brand of output voltage transformer rectifier connected to an imbalance in the power module measures binding DC / DC down. DC / DC module uses a limited number of unipolar pulse width modulation (PDW), the duty of the DC / DC load balancing. When the power switch of positive and negative constant current in a different quadrant of the race, the four quadrants of the system must be done.
2 High-DC-tax
Fast power control in the tokamak applications require real-time monitoring the supply curve of output current at constant current. Therefore, the energy system is servo-current system is the rapid nature of the system of key performance indicators. The operation of the election will affect the overall performance of static and dynamic system.
Further improve the system steady state accuracy and dynamic range for the current to the adoption of two current control, the total current cycle and the current loop can be followed by another module, not only to improve performance, and is the current form.
The main function of the outer ring is to achieve the current real-time monitoring with feedback and feedforward composites. Composed of pilot control has no influence on the stability of the original. But it can not increase the open loop gain of a significant increase in the steady state accuracy and dynamic. For a control. Without the feed-forward structure of the channel is complicated. Feedforward of the input signal of control used is a derivative, and is added to the input signal. In the main loop current characteristics of the module are as follows.
1) the conversion of the transfer function of the Control object.
2) limiting the maximum output current, while the realization of the power modules are booming.
3 Topology data
Moving the vertical alignment of the power control of the plasma is the average speed of devices in parallel, a serious problem. Computer and data processing power of the master-slave module sends is the CPU load of each power of control is present, the HP 484170-001 computer information to control the power module, the computer screen is part of the power of central government, including the authority should be sent to all the controls to start and stop. Conduct a power signal, the acquisition of any current production, the total, utilities and power supply , temperature fuse failure and other physical variables such as control of access. At the same time,a control module of the computer and EAST total plant capacity for communication, a wide range of automated data reports, the following report. The form is automatically removed and other jobs. Monitoring the processing power for each module, the same steady stream of them! The current loop in the regulation of food intake by the microcontroller programming software enabling it to achieve the same output current of charge! For the most current results.
4 Conclusion
For SONY VGP-BPS8 battery power control of the tokamak as fast, and its large capacity, and select the current track requires a high performance, the use of several independent modules of small and medium power in parallel to meet the occasion, the needs of total capacity requirements. Multiple power supplies connected in parallel is an important issue for the current sharing between modules. The use of intelligent power modules and systems for automatic control theory, power component of the module in a closed circuit monitoring! Control Act rather than hardware to achieve the current division between the modules. This system will also be trained to meet the needs of fast power control to respond faster than the previous monitoring. Therefore, this project can be achieved. The key to the following conditions:
1) the strength and single-chip parallel system used in embedded applications in the smart device, so much to improve the consiste
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