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Sutherland Hunt A. Bose Bimal K. Somuah Clement B. 《Industrial Electronics, IEEE Transactions on》1983,(4):318-322
The application of a state language to the real-time control of a hybrid electric vehicle is explained. The state language has been developed both as a specification aid to the system designer and as a means for the programmer to produce microcomputer software. A translator program, which was developed on a VAX minicomputer, preprocesses the state language into a software module to be compiled by the standard Intel PL/M 86 compiler. 相似文献
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This paper describes an analytical and experimental study of a self-cascade single-frame brushless induction motor, using a rectifier- inverter to control speed by slip-power pump back to the line. Steady- state analyses of asynchronous and synchronous performance and test results of a special machine wound for the study are presented. The effect of machine parameters, windings, and construction is discussed. The performance and rating of the brushless cascade machine are found to be equivalent to the slip-ring induction motor or wound-field synchronous machine built into the same frame. 相似文献
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The state of the art in indirect slip frequency-controlled induction motor drive systems is fast response, high performance, voltage decoupling control. However, decoupling control needs to operate at a constant rotor flux, which makes energy conversion inefficient. A variable-flux decoupling model of a voltage-fed induction motor which provides optimal efficiency and quick response is proposed. An optimization scheme determines the flux level for maximum efficiency at any operating condition, and a coordination controller assures quick torque response without torque pulsations. Application to a 100 hp and a 7.5 hp motor shows that a substantial saving in controllable losses during low-load operation is possible while maintaining high performance 相似文献
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Consideration is given to dispatch problems that involve the allocation of system generation optimally among generating units while tracking a load curve and observing the power rate limits of the units, system spinning reserve requirements, and other security constraints. Two methods are used in the solution of the problem. The first method is a quadratic programming technique combined with a linear programming redispatch technique. The latter utilizes a linear programming formulation of the dynamic dispatch problem about the base case static economic dispatch solution. The second method is based on the Dantzig-Wolfe decomposition technique. Tests and computer results of four systems of different combinations of units and intervals are given to show the advantages of the techniques proposed 相似文献
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In this paper the wide spectrum of the response times involved in the average system frequency dynamic behavior of power systems is exploited in the computer simulation of the power system. The various subsystem models of the power plants are decomposed into different time scales. A class of multiple time scale algorithm is proposed that used different time steps for the integration of the subsystems belonging to different time scale groupings. A special feature of the algorithms is the coordination of the interfaces between the different time scale solutions. Numerical study of a 5 bus power system is included to demonstrate the improvement in the solution time, stability, and accuracy of the new approach over previous methods. 相似文献
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Somuah Clement B. Burke Andrew F. Bose Bimal K. King Robert D. Pocobello Michael A. 《Industrial Electronics, IEEE Transactions on》1983,(2):126-131
The design and testing of a microcomputer-controlled powertrain for a hybrid (heat engine/electric) vehicle are described in this paper. The detailed control strategy used and its software implementation on the Intel 8086 microcomputer are discussed. The powertrain is made up of an electric motor, gasoline engine, automatic transmission with the torque converter removed, engine and electric motor clutches, and Hy-Vo transfer chains. The drive system has been installed in vehicles and tested on a chassis dynamometer. Test results show smooth shifting of the transmission and sequencing of the clutches in the different hybrid operating modes. The overall performance of the hybrid car is good, and driveability is comparable to a conventional automobile. 相似文献
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Bose Bimal K. Somuah Clement B. Sutherland Hunt A. 《Industrial Electronics, IEEE Transactions on》1984,(1):61-68
This paper describes a hybrid electric vehicle drive control system under microcomputer control where the propulsion power is shared between a gasoline engine and a dc motor. The control functions have been developed, analyzed, and implemented with highlevel language in a dual Intel 8086 microcomputer system. The drive system has been integrated and tested, and shows excellent results. 相似文献
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F.C. Schweppe C.B. Somuah R.L. Morris S.M. Chan 《International Journal of Electrical Power & Energy Systems》1981,3(3):140-152
The results and conclusions are given of a study of the real-time cotrol frequency, line loading, bus voltages, load shedding and power plant mechanical power during slow-speed dynamic emergency conditions resulting from the loss of major generation and/or tieline support. 相似文献
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