Application considerations for PWM inverter-fed low-voltage induction motors
- Reliance Electric, Cleveland, OH (United States). VS Drives Div.
PWM inverter-fed induction motor drives are being used in greater numbers throughout a wide variety of industrial and commercial applications. PWM inverters provide many benefits to their users including improved control of processes, reduced energy consumption, and expanded diagnostics. Despite these benefits, PWM inverters should be applied with special consideration for low-voltage induction motor operation. The power supplied to the motor by a PWM inverter has some adverse effects which this paper will describe. These effects include increased heating, high peak voltages, and increased audible noise. Many manufacturers of PWM inverters promote to the marketplace that their PWM inverters can successfully operate any low-voltage induction motor. This is often not true. There are many PWM inverter-motor applications which require long periods of low speed operation, wide constant torque speed range, and high starting torque, all of which could cause the motor additional stress resulting in a possible unsuccessful application. The intent of this paper is to highlight some of the known possible adverse effects PWM inverters cause low voltage induction motors and the impact these effects have on the given application. This paper is written for those that are applying PWM inverter-fed low voltage induction motors, not those designing them.
- OSTI ID:
- 7008102
- Journal Information:
- IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States), Journal Name: IEEE Transactions on Industry Applications (Institute of Electrical and Electronics Engineers); (United States) Vol. 30:2; ISSN 0093-9994; ISSN ITIACR
- Country of Publication:
- United States
- Language:
- English
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320303* -- Energy Conservation
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& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
COMMERCIAL SECTOR
EFFICIENCY
ELECTRIC MOTORS
ELECTRICAL EQUIPMENT
ELECTRONIC EQUIPMENT
ENERGY EFFICIENCY
ENGINES
EQUIPMENT
INDUSTRY
INVERTERS
MOTORS
POWER SUPPLIES
USES