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APPLICATION OF SOLID STATE SWITCHING DEVICES TO ELECTRONIC LOAD GOVERNING OF MICRO HYDRO GENERATORS
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| Author(s) |
D. S. Henderson; D. E. Macpherson |
| Abstract |
A three phase, Electronic Load Governor has recently been developed. Based on the binary load technique, it uses a balast load to compensate for any torque imbalance on the shaft system. The ballast load which is applied to the generator is connected via solid state type relays incorporating a zero voltage swltching circuit producing virtually no RF interference. They are controlled by a microprocessor and the input is optically isolated from the output circuit. This paper gives an introduction to the design requirements for micro hydroelectric generating schemes and to the load governing principles involved. The paper presents a brief background of the development of the ELG and goes on to describe the ballast load switching circuits. The solid state switches are described and their operational performance discussed. The paper closes with a description of a computer model which simulates the transient frequency performance of the system under the control of the ELG. |
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| Filename: | Unnamed file |
| Filesize: | 4.069 MB |
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| Type |
Members Only |
| Date |
Last modified 2019-06-04 by System |
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