发明名称 |
Транзисторный преобразователь с однофазным звеном повышенной частоты и способ управлени им |
摘要 |
FIELD: converter engineering. SUBSTANCE: proposed method is designed for controlling transistor converters incorporating single-phase high-frequency section and having no dc section in their structure which are used in limited-power supply mains or in no-break power supplies. Method involves control of converter whose frequency is adequate to modulation frequency as part of modulator output voltage by eliminating low-frequency component; to this end modulator is made in the form of several pairs of two-way series-connected transistor switches that short out center-tapped transformer primary semi- windings. Quantity of mentioned pairs and their connection to supply mains depend on neutral condition. Modulator output voltage is regulated by pulse-width modulation using comparison of control and reference signals, the latter signal being shaped for equalizing mean time-step voltages by integration starting from initial zero voltage of supply mains phase thrown in operation at this time step. EFFECT: reduced mass and size and improved output voltage characteristics of frequency converter. 1 cl, 3 dwg |
申请公布号 |
RU2002121093(A) |
申请公布日期 |
2004.01.20 |
申请号 |
RU20020121093 |
申请日期 |
2002.08.02 |
申请人 |
Уль новский государственный технический университет |
发明人 |
Сидоров Сергей Николаевич |
分类号 |
H02M5/275;G05F1/59 |
主分类号 |
H02M5/275 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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