发明名称 |
Variable-speed drive for single-phase motors |
摘要 |
A single-phase variable-frequency power supply with two output voltages drives a single-phase AC motor that has a start circuit and main winding. For permanent split-capacitor motors, the power supply maintains a constant voltage to the start winding while it reduces the voltage to the main winding at lower frequencies. The power supply can similarly control the speed of capacitor-start and split-phase motors. For fans and pumps and other variable-torque applications, the power supply maintains approximately a constant ratio of main-winding voltage to the square of frequency. The power supply is preferably an electronic pulse-width modulated inverter. |
申请公布号 |
AU2883300(A) |
申请公布日期 |
2000.11.21 |
申请号 |
AU20000028833 |
申请日期 |
2000.02.18 |
申请人 |
WORK SMART ENERGY ENTERPRISES, INC. |
发明人 |
FRANK E WILLS;WILLIAM L. KOPKO |
分类号 |
H02P1/44;H02P27/08 |
主分类号 |
H02P1/44 |
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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